１０段階目まで完了済

.classpath

@@ -3,6 +3,7 @@
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="lib" path="lib/mysql-connector-java-8.0.23.jar"/>
+	<classpathentry kind="lib" path="mysql-connector-j-8.0.32.jar"/>
 	<classpathentry kind="lib" path="実行例/DAO_Simple.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

.project

@@ -6,18 +6,18 @@
 	</projects>
 	<buildSpec>
 		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<name>org.eclipse.jdt.core.javabuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
 	</natures>
 </projectDescription>

src/com/rhizome/example/dao/DepartmentDAO.java

@@ -1,9 +1,3 @@
-/*
- * EmployeeDAO.java
- *   作成	IT-College	2020
- *------------------------------------------------------------
- * Copyright(c) Rhizome Inc. All Rights Reserved.
- */
 package com.rhizome.example.dao;
 
 import java.sql.Connection;
@@ -12,6 +6,7 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
 
 import com.rhizome.example.dto.DepartmentDTO;
 import com.rhizome.example.util.DbUtil;
@@ -21,6 +16,17 @@ public class DepartmentDAO {
 	private static final String ID_DEPARTMENT = "id_department";
 	private static final String NM_DEPARTMENT = "nm_department";
 
+	/** アクセサ */
+	public static String getTblName() {
+		return TBL_NAME;
+	}
+	public static String getIdColumnName() {
+		return ID_DEPARTMENT;
+	}
+	public static String getNmColumnName() {
+		return NM_DEPARTMENT;
+	}
+
 	/** DBコネクション */
 	public Connection con;
 	/** DBステートメント */
@@ -39,7 +45,7 @@ public class DepartmentDAO {
 	}
 
 	/**
-	 * 社員テーブルの情報を全件取得する
+	 * 部署テーブルの情報を全件取得する
 	 *
 	 * @return 検索結果
 	 * @throws SQLException
@@ -53,15 +59,13 @@ public class DepartmentDAO {
 		sql.append(" FROM ");
 		sql.append("    " + TBL_NAME);
 		try {
-
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				DepartmentDTO dto = new DepartmentDTO();
+				DepartmentDTO Department = new DepartmentDTO();
-
+				Department.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				Department.setNmDepartment(rs.getString(NM_DEPARTMENT));
-				dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+				rtnList.add(Department);
-				rtnList.add(dto);
 			}
 		} finally {
 			DbUtil.closeStatement(this.stmt);
@@ -69,175 +73,186 @@ public class DepartmentDAO {
 		return rtnList;
 	}
 
-	//部署ID検索
+	/**
-	public List<DepartmentDTO> selectById(int id) throws SQLException {
+	 * 部署テーブルから指定された部署IDに一致するデータを全件取得する
-		//戻り値用リスト
+	 *
+	 * @return 検索結果
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public List<DepartmentDTO> selectById(int idDepartment) throws SQLException, ClassNotFoundException {
 		List<DepartmentDTO> rtnList = new ArrayList<>();
-		//SQL作成
 		StringBuilder sql = new StringBuilder();
-		sql.append(" SELECT * ");
+		sql.append(" SELECT ");
-		sql.append(" FROM department ");
+		sql.append("    " + "*");
-		sql.append(" WHERE id_department = ? ");
-
-		try {
-			//PreparedStatement生成
-			stmt = con.prepareStatement(sql.toString());
-			//部署IDを設定
-			stmt.setInt(1, id);
-			//SQL実行
-			rs = stmt.executeQuery();
-			//検索結果をDTOへ格納
-			while (rs.next()) {
-				//DTO生成
-				DepartmentDTO dto = new DepartmentDTO();
-				//検索結果をDTOへセット
-				dto.setIdDepartment( rs.getInt(ID_DEPARTMENT));
-				dto.setNmDepartment( rs.getString(NM_DEPARTMENT));
-
-				//リストへ追加
-				rtnList.add(dto);
-			}
-
-		} finally {
-
-			DbUtil.closeStatement(stmt);
-		}
-		//検索結果を返却
-		return rtnList;
-	}
-	
-	//部署名検索
-	public List<DepartmentDTO> selectByName(String name) throws SQLException {
-	    //戻り値用リスト
-	    List<DepartmentDTO> rtnList = new ArrayList<>();
-	    //SQL作成
-	    StringBuilder sql = new StringBuilder();
-
-	    sql.append(" SELECT * ");
-	    sql.append(" FROM department ");
-	    sql.append(" WHERE nm_department = ? ");
-
-	    try {
-	        //PreparedStatement生成
-	        stmt = con.prepareStatement(sql.toString());
-	        //部署名を設定
-	        stmt.setString(1, name);
-	        //SQL実行
-	        rs = stmt.executeQuery();
-	        //検索結果をDTOへ格納
-	        while (rs.next()) {
-	            //DTO生成
-	            DepartmentDTO dto =  new DepartmentDTO();
-	            //検索結果をDTOへセット
-	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-	            dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
-
-	            //リストへ追加
-	            rtnList.add(dto);
-	        }
-
-	    } finally {
-
-	        DbUtil.closeStatement(stmt);
-	    }
-
-	    //検索結果を返却
-	    return rtnList;
-	}
-
-	//部署情報削除
-	public void deptDelete(int id) throws SQLException {
-		//SQL作成
-		StringBuilder sql = new StringBuilder();
-		sql.append(" DELETE ");
 		sql.append(" FROM ");
 		sql.append("    " + TBL_NAME);
 		sql.append(" WHERE ");
-		sql.append("    " + ID_DEPARTMENT + " = ?");
+		sql.append("    " + ID_DEPARTMENT + " = " + "?");
-
 		try {
-			//PreparedStatement生成
+			this.stmt = con.prepareStatement(sql.toString());
-			stmt = con.prepareStatement(sql.toString());
+			stmt.setInt(1,idDepartment);
-			//値設定
+			rs = stmt.executeQuery();
-			stmt.setInt(1, id);
+			int nRecords = 0;
-			//SQL実行
+			while (rs.next()) {
-			stmt.executeUpdate();
+				DepartmentDTO Department = new DepartmentDTO();
-
+				Department.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				Department.setNmDepartment(rs.getString(NM_DEPARTMENT));
+				rtnList.add(Department);
+				nRecords++;
+			}
+			if (nRecords==0) {
+				System.out.println("入力された部署IDで情報がみつかりませんでした");
+			}
 		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
+	}
 
-			DbUtil.closeStatement(stmt);
+	/**
+	 * 部署テーブルから指定された部署名に一致するデータを全件取得する
+	 *
+	 * @return 検索結果
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public List<DepartmentDTO> selectByNm(String NmDepartment) throws SQLException, ClassNotFoundException {
+		List<DepartmentDTO> rtnList = new ArrayList<>();
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append("    " + "*");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append("    " + NM_DEPARTMENT + " LIKE " + " CONCAT('%',?,'%') ");
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			stmt.setString(1,NmDepartment);
+			rs = stmt.executeQuery();
+			int nRecords = 0;
+			while (rs.next()) {
+				DepartmentDTO Department = new DepartmentDTO();
+				Department.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				Department.setNmDepartment(rs.getString(NM_DEPARTMENT));
+				rtnList.add(Department);
+				nRecords++;
+			}
+			if (nRecords==0) {
+				System.out.println("入力された部署名で情報がみつかりませんでした");
+			}
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
+	}
+
+	/**
+	 * 部署テーブルから指定された部署IDに一致する部署名を取得する
+	 *
+	 * @return 部署名
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public String getNmDepartment(int idDepartment) throws SQLException, ClassNotFoundException {
+		Connection con = DbUtil.getConnection();
+		DepartmentDAO depDao = new DepartmentDAO(con);
+		String name = "";
+		if(depDao.selectById(idDepartment).size()==1) {
+			DepartmentDTO department = depDao.selectById(idDepartment).get(0);
+			name = department.getNmDepartment();
+		};
+		return name;
+	}
+
+	/**
+	 * 部署テーブルから指定された部署IDに一致するデータを削除する
+	 *
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public void depDelete(int idDepartment) throws SQLException, ClassNotFoundException {
+		if (selectById(idDepartment).size()!=0) {
+			StringBuilder sql = new StringBuilder();
+			sql.append(" DELETE FROM ");
+			sql.append("    " + TBL_NAME);
+			sql.append(" WHERE ");
+			sql.append("    " + ID_DEPARTMENT + " = " + "?");
+			System.out.println("指定されたIDの情報を削除しますか？ Y/y");
+			System.out.println("（Y/y以外の入力であればキャンセル）");
+			Scanner sc = new Scanner(System.in);
+			String flag = sc.nextLine();
+			if (flag.equals("Y")||flag.equals("y")) {
+				try {
+					this.stmt = con.prepareStatement(sql.toString());
+					stmt.setInt(1,idDepartment);
+					stmt.executeUpdate();
+					System.out.println("削除が完了しました");
+				}  finally {
+					DbUtil.closeStatement(this.stmt);
+				}
+			}
 		} 
 	}
 
-	//部署情報登録
+	/**
-	public void deptInsert(
+	 * 部署テーブルに指定された情報を新規登録する
-			String departmentName)
+	 *
-					throws SQLException {
+	 * @throws SQLException
-		//SQL作成
+	 * @throws ClassNotFoundException
+	 */
+	public void depInsert(String name) throws SQLException, ClassNotFoundException {
 		StringBuilder sql = new StringBuilder();
-
+		sql.append(" INSERT INTO ");
-		sql.append(" INSERT INTO department ");
+		sql.append("    " + TBL_NAME);
-		sql.append(" ( ");
+		sql.append(" (" + NM_DEPARTMENT + ") ");
-		sql.append(" nm_department ");
-		sql.append(" ) ");
 		sql.append(" VALUES ");
-		sql.append(" (?) ");
+		sql.append(" ( ? ) ");
-
+		System.out.println("指定された情報を登録しますか？ Y/y");
-		try {
+		System.out.println("（Y/y以外の入力であればキャンセル）");
-
+		Scanner sc = new Scanner(System.in);
-			//PreparedStatement生成
+		String flag = sc.nextLine();
-			stmt = con.prepareStatement(sql.toString());
+		if (flag.equals("Y")||flag.equals("y")) {
-			//値設定
+			try {
-			stmt.setString(1, departmentName);
+				this.stmt = con.prepareStatement(sql.toString());
-			//SQL実行
+				stmt.setString(1,name);
-			stmt.executeUpdate();
+				stmt.executeUpdate();
-
+				System.out.println("登録が完了しました");
-		} finally {
+			}  finally {
-
+				DbUtil.closeStatement(this.stmt);
-			DbUtil.closeStatement(stmt);
+			}
 		}
 	}
 
-	//部署情報更新
+	/**
-	public void deptUpdate(
+	 * 部署テーブルの指定された部署IDに一致するデータを引数の内容に更新する
-			int id,
+	 *
-			String departmentName)
+	 * @throws SQLException
-					throws SQLException {
+	 * @throws ClassNotFoundException
-
+	 */
-		//SQL作成
+	public void depUpdate(int idDepartment, String name) throws SQLException, ClassNotFoundException {
 		StringBuilder sql = new StringBuilder();
-
+		sql.append(" UPDATE ");
-		sql.append(" UPDATE department ");
+		sql.append("    " + TBL_NAME);
 		sql.append(" SET ");
-		sql.append(" nm_department = ? ");
+		sql.append("    " + NM_DEPARTMENT + " = " + "?" + " "); 
-		sql.append(" WHERE id_department = ? ");
+		sql.append(" WHERE ");
-
+		sql.append("    " + ID_DEPARTMENT + " = " + "?");
-		try {
+		System.out.println("指定されたIDの情報を更新しますか？ Y/y");
-
+		System.out.println("（Y/y以外の入力であればキャンセル）");
-			//PreparedStatement生成
+		Scanner sc = new Scanner(System.in);
-			stmt = con.prepareStatement(sql.toString());
+		String flag = sc.nextLine();
-			//値設定
+		if (flag.equals("Y")||flag.equals("y")) {
-			stmt.setString(1, departmentName);
+			try {
-			stmt.setInt(2, id);
+				this.stmt = con.prepareStatement(sql.toString());
-
+				stmt.setString(1,name);
-			//SQL実行
+				stmt.setInt(2,idDepartment);
-			stmt.executeUpdate();
+				stmt.executeUpdate();
-
+				System.out.println("更新が完了しました");
-		} finally {
+			}  finally {
-
+				DbUtil.closeStatement(this.stmt);
-			//Statement切断
+			}
-			DbUtil.closeStatement(stmt);
 		}
 	}
 
-	//部署ID存在確認
-	public boolean existsDepartment(int idDepartment)
-			throws SQLException {
-
-		List<DepartmentDTO> deptList = selectById(idDepartment);
-
-		return deptList.size() > 0;
-	}
-
 }
-

src/com/rhizome/example/dao/EmployeeDAO.java

@@ -12,7 +12,9 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
 
+import com.rhizome.example.dto.DepartmentDTO;
 import com.rhizome.example.dto.EmployeeDTO;
 import com.rhizome.example.util.DbUtil;
 
@@ -24,8 +26,6 @@ public class EmployeeDAO {
 	private static final String MAIL_ADDRESS = "mail_address";
 	private static final String PASSWORD = "password";
 	private static final String ID_DEPARTMENT = "id_department";
-	private static final String NM_DEPARTMENT = "nm_department";
-	
 
 	/** DBコネクション */
 	public Connection con;
@@ -55,31 +55,21 @@ public class EmployeeDAO {
 		List<EmployeeDTO> rtnList = new ArrayList<>();
 		StringBuilder sql = new StringBuilder();
 		sql.append(" SELECT ");
-		sql.append(" employee.id_employee ");
+		sql.append("    " + "*");
-		sql.append(" ,employee.nm_employee ");
+		sql.append(" FROM ");
-		sql.append(" ,employee.kn_employee ");
+		sql.append("    " + TBL_NAME);
-		sql.append(" ,employee.mail_address ");
-		sql.append(" ,employee.password ");
-		sql.append(" ,employee.id_department ");
-		sql.append(" ,department.nm_department ");
-		sql.append(" FROM employee ");
-		sql.append(" INNER JOIN department ");
-		sql.append(" ON employee.id_department = department.id_department ");
 		try {
-
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				EmployeeDTO dto = new EmployeeDTO();
+				EmployeeDTO employee = new EmployeeDTO();
-
+				employee.setIdEmployee(rs.getInt(ID_EMPLOYEE));
-				dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+				employee.setNmEmployee(rs.getString(NM_EMPLOYEE));
-				dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+				employee.setKnEmployee(rs.getString(KN_EMPLOYEE));
-				dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+				employee.setMailaddress(rs.getString(MAIL_ADDRESS));
-				dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+				employee.setPassword(rs.getString(PASSWORD));
-				dto.setPassword(rs.getString(PASSWORD));
+				employee.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				rtnList.add(employee);
-				dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
-				rtnList.add(dto);
 			}
 		} finally {
 			DbUtil.closeStatement(this.stmt);
@@ -87,370 +77,353 @@ public class EmployeeDAO {
 		return rtnList;
 	}
 
-	//社員ID検索
+	/**
-	public List<EmployeeDTO> selectById(int id) throws SQLException {
+	 * 社員テーブルから指定された社員IDに一致するデータを全件取得する
-		//戻り値用リスト
+	 *
+	 * @return 検索結果
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public List<EmployeeDTO> selectById(int idEmployee) throws SQLException, ClassNotFoundException {
 		List<EmployeeDTO> rtnList = new ArrayList<>();
-		//SQL作成
 		StringBuilder sql = new StringBuilder();
 		sql.append(" SELECT ");
-		sql.append(" employee.id_employee ");
+		sql.append("    " + "*");
-		sql.append(" ,employee.nm_employee ");
+		sql.append(" FROM ");
-		sql.append(" ,employee.kn_employee ");
+		sql.append("    " + TBL_NAME);
-		sql.append(" ,employee.mail_address ");
+		sql.append(" WHERE ");
-		sql.append(" ,employee.password ");
+		sql.append("    " + ID_EMPLOYEE + " = " + "?");
-		sql.append(" ,employee.id_department ");
-		sql.append(" ,department.nm_department ");
-		sql.append(" FROM employee ");
-		sql.append(" INNER JOIN department ");
-		sql.append(" ON employee.id_department = department.id_department ");
-		sql.append(" WHERE employee.id_employee = ? ");
-
 		try {
-			//PreparedStatement生成
+			this.stmt = con.prepareStatement(sql.toString());
-			stmt = con.prepareStatement(sql.toString());
+			stmt.setInt(1,idEmployee);
-			//社員IDを設定
-			stmt.setInt(1, id);
-			//SQL実行
 			rs = stmt.executeQuery();
-			//検索結果をDTOへ格納
+			int nRecords = 0;
 			while (rs.next()) {
-				//DTO生成
+				EmployeeDTO employee = new EmployeeDTO();
-				EmployeeDTO dto = new EmployeeDTO();
+				employee.setIdEmployee(rs.getInt(ID_EMPLOYEE));
-				//検索結果をDTOへセット
+				employee.setNmEmployee(rs.getString(NM_EMPLOYEE));
-				dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+				employee.setKnEmployee(rs.getString(KN_EMPLOYEE));
-				dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+				employee.setMailaddress(rs.getString(MAIL_ADDRESS));
-				dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+				employee.setPassword(rs.getString(PASSWORD));
-				dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+				employee.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-				dto.setPassword(rs.getString(PASSWORD));
+				rtnList.add(employee);
-				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				nRecords++;
-				dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+			}
-
+			if (nRecords==0) {
-				//リストへ追加
+				System.out.println("入力された社員IDで情報がみつかりませんでした");
-				rtnList.add(dto);
 			}
-
 		} finally {
-
+			DbUtil.closeStatement(this.stmt);
-			DbUtil.closeStatement(stmt);
 		}
-		//検索結果を返却
 		return rtnList;
 	}
 
-	// 社員名検索
+	/**
-	public List<EmployeeDTO> selectByName(String name) throws SQLException {
+	 * 社員テーブルから条件に一致するデータを全件取得する(AND検索)
-	    //戻り値用リスト
+	 *
-	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	 * @return 検索結果
-	    //SQL作成
+	 * @throws SQLException
-	    StringBuilder sql = new StringBuilder();
+	 * @throws ClassNotFoundException
-
+	 */
-	    sql.append(" SELECT ");
+	/**/
-	    sql.append(" employee.id_employee ");
+	// 部署ID入力
-	    sql.append(" ,employee.nm_employee ");
+	public List<EmployeeDTO> empSelect(int idEmployee, String name, String kn, String mailaddress, String password, int idDepartment) throws SQLException, ClassNotFoundException {
-	    sql.append(" ,employee.kn_employee ");
+		List<EmployeeDTO> rtnList = new ArrayList<>();
-	    sql.append(" ,employee.mail_address ");
+		StringBuilder sql = new StringBuilder();
-	    sql.append(" ,employee.password ");
+		sql.append(" SELECT ");
-	    sql.append(" ,employee.id_department ");
+		sql.append("    " + "*");
-	    sql.append(" ,department.nm_department ");
+		sql.append(" FROM ");
-	    sql.append(" FROM employee ");
+		sql.append("    " + TBL_NAME);
-	    sql.append(" INNER JOIN department ");
+		sql.append(" WHERE ");
-	    sql.append(" ON employee.id_department = department.id_department ");
+		if (idEmployee!=0) sql.append("    " + ID_EMPLOYEE + " = " + "?" + "AND");
-	    sql.append(" WHERE employee.nm_employee = ? ");
+		if (name.trim().length()!=0) sql.append("    " + NM_EMPLOYEE + " LIKE " + " CONCAT('%',?,'%')" + "AND");
-
+		if (kn.trim().length()!=0) sql.append("    " + KN_EMPLOYEE + " LIKE " + " CONCAT('%',?,'%')" + "AND");
-	    try {
+		if (mailaddress.trim().length()!=0) sql.append("    " + MAIL_ADDRESS + " LIKE " + " CONCAT('%',?,'%')" + "AND");
-
+		if (password.trim().length()!=0) sql.append("    " + PASSWORD + " LIKE " + " CONCAT('%',?,'%')" + "AND");
-	        //PreparedStatement生成
+		if (idDepartment!=0) sql.append("    " + ID_DEPARTMENT + " = " + "?" + "AND");
-	        stmt = con.prepareStatement(sql.toString());
+		sql.delete(sql.length()-3, sql.length());  // 末尾"AND"を削除する
-
+		try {
-	        //社員名を設定
+			int nConditions = 0;
-	        stmt.setString(1, name);
+			this.stmt = con.prepareStatement(sql.toString());
-
+			if (idEmployee!=0) stmt.setInt(++nConditions, idEmployee);
-	        //SQL実行
+			if (name.trim().length()!=0) stmt.setString(++nConditions, name);
-	        rs = stmt.executeQuery();
+			if (kn.trim().length()!=0) stmt.setString(++nConditions, kn);
-
+			if (mailaddress.trim().length()!=0) stmt.setString(++nConditions, mailaddress);
-	        //検索結果をDTOへ格納
+			if (password.trim().length()!=0) stmt.setString(++nConditions, password);
-	        while (rs.next()) {
+			if (idDepartment!=0) stmt.setInt(++nConditions, idDepartment);
-
+			if (nConditions==0) {
-	            //DTO生成
+				System.out.println("情報が入力されていません");
-	            EmployeeDTO dto = new EmployeeDTO();
+			} else {
-
+				rs = stmt.executeQuery();
-	            //検索結果をDTOへセット
+				int nRecords = 0;
-	            dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+				while (rs.next()) {
-	            dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+					EmployeeDTO employee = new EmployeeDTO();
-	            dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+					employee.setIdEmployee(rs.getInt(ID_EMPLOYEE));
-	            dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+					employee.setNmEmployee(rs.getString(NM_EMPLOYEE));
-	            dto.setPassword(rs.getString(PASSWORD));
+					employee.setKnEmployee(rs.getString(KN_EMPLOYEE));
-	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+					employee.setMailaddress(rs.getString(MAIL_ADDRESS));
-	            dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+					employee.setPassword(rs.getString(PASSWORD));
-
+					employee.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-	            //リストへ追加
+					rtnList.add(employee);
-	            rtnList.add(dto);
+					nRecords++;
-	        }
+				}
-
+				if (nRecords==0) {
-	    } finally {
+					System.out.println("入力された社員情報で情報がみつかりませんでした");
-
+				}
-	        DbUtil.closeStatement(stmt);
+			}
-	    }
+		} finally {
-
+			DbUtil.closeStatement(this.stmt);
-	    //検索結果を返却
+		}
-	    return rtnList;
+		return rtnList;
+	}
+	// 部署名入力
+	public List<EmployeeDTO> empSelect(int idEmployee, String name, String kn, String mailaddress, String password, String nmDepartment) throws SQLException, ClassNotFoundException {
+		List<EmployeeDTO> rtnList = new ArrayList<>();
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append("    " + "*");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		if (nmDepartment.trim().length()!=0) {  // テーブル結合
+			sql.append(" INNER JOIN " + DepartmentDAO.getTblName() + " ON ");
+			sql.append(TBL_NAME+"."+ID_DEPARTMENT + " = " + DepartmentDAO.getTblName()+"."+DepartmentDAO.getIdColumnName());
+		}
+		sql.append(" WHERE ");
+		if (idEmployee!=0) sql.append("    " + ID_EMPLOYEE + " = " + "?" + "AND");
+		if (name.trim().length()!=0) sql.append("    " + NM_EMPLOYEE + " LIKE " + " CONCAT('%',?,'%')" + "AND");
+		if (kn.trim().length()!=0) sql.append("    "+KN_EMPLOYEE + " LIKE " + " CONCAT('%',?,'%')" + "AND");
+		if (mailaddress.trim().length()!=0) sql.append("    " + MAIL_ADDRESS + " LIKE " + " CONCAT('%',?,'%')" + "AND");
+		if (password.trim().length()!=0) sql.append("    " + PASSWORD + " LIKE " + " CONCAT('%',?,'%')" + "AND");
+		if (nmDepartment.trim().length()!=0) sql.append("    " + DepartmentDAO.getNmColumnName() + " LIKE " + " CONCAT('%',?,'%')" + "AND");
+		sql.delete(sql.length()-3, sql.length());  // 末尾"AND"を削除する
+		try {
+			int nConditions = 0;
+			this.stmt = con.prepareStatement(sql.toString());
+			if (idEmployee!=0) stmt.setInt(++nConditions, idEmployee);
+			if (name.trim().length()!=0) stmt.setString(++nConditions, name);
+			if (kn.trim().length()!=0) stmt.setString(++nConditions, kn);
+			if (mailaddress.trim().length()!=0) stmt.setString(++nConditions, mailaddress);
+			if (password.trim().length()!=0) stmt.setString(++nConditions, password);
+			if (nmDepartment.trim().length()!=0) stmt.setString(++nConditions, nmDepartment);
+			if (nConditions==0) {
+				System.out.println("情報が入力されていません");
+			} else {
+				rs = stmt.executeQuery();
+				int nRecords = 0;
+				while (rs.next()) {
+					EmployeeDTO employee = new EmployeeDTO();
+					employee.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+					employee.setNmEmployee(rs.getString(NM_EMPLOYEE));
+					employee.setKnEmployee(rs.getString(KN_EMPLOYEE));
+					employee.setMailaddress(rs.getString(MAIL_ADDRESS));
+					employee.setPassword(rs.getString(PASSWORD));
+					employee.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+					rtnList.add(employee);
+					nRecords++;
+				}
+				if (nRecords==0) {
+					System.out.println("入力された社員情報で情報がみつかりませんでした");
+				}
+			}
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
 	}
 
-	//フリガナ検索
+	/**
-	public List<EmployeeDTO> selectByKana(String kana) throws SQLException {
+	 * 社員テーブルから指定された社員IDに一致するデータを削除する
-	    //戻り値用リスト
+	 *
-	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	 * @throws SQLException
-	    //SQL作成
+	 * @throws ClassNotFoundException
-	    StringBuilder sql = new StringBuilder();
+	 */
-
+	public void empDelete(int idEmployee) throws SQLException, ClassNotFoundException {
-	    sql.append(" SELECT ");
+		if (selectById(idEmployee).size()!=0) {
-	    sql.append(" employee.id_employee ");
+			StringBuilder sql = new StringBuilder();
-	    sql.append(" ,employee.nm_employee ");
+			sql.append(" DELETE FROM ");
-	    sql.append(" ,employee.kn_employee ");
+			sql.append("    " + TBL_NAME);
-	    sql.append(" ,employee.mail_address ");
+			sql.append(" WHERE ");
-	    sql.append(" ,employee.password ");
+			sql.append("    " + ID_EMPLOYEE + " = " + "?");
-	    sql.append(" ,employee.id_department ");
+			System.out.println("指定されたIDの情報を削除しますか？ Y/y");
-	    sql.append(" ,department.nm_department ");
+			System.out.println("（Y/y以外の入力であればキャンセル）");
-	    sql.append(" FROM employee ");
+			Scanner sc = new Scanner(System.in);
-	    sql.append(" INNER JOIN department ");
+			String flag = sc.nextLine();
-	    sql.append(" ON employee.id_department = department.id_department ");
+			if (flag.equals("Y")||flag.equals("y")) {
-	    sql.append(" WHERE employee.kn_employee = ? ");
+				try {
-
+					this.stmt = con.prepareStatement(sql.toString());
-	    try {
+					stmt.setInt(1,idEmployee);
-	        //PreparedStatement生成
+					stmt.executeUpdate();
-	        stmt = con.prepareStatement(sql.toString());
+					System.out.println("削除が完了しました");
-	        //フリガナ設定
+				}  finally {
-	        stmt.setString(1, kana);
+					DbUtil.closeStatement(this.stmt);
-	        //SQL実行
+				}
-	        rs = stmt.executeQuery();
+			}
-
+		} 
-	        while (rs.next()) {
-
-	            EmployeeDTO dto = new EmployeeDTO();
-
-	            dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
-	            dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
-	            dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
-	            dto.setMailAddress(rs.getString(MAIL_ADDRESS));
-	            dto.setPassword(rs.getString(PASSWORD));
-	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
-	            dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
-
-	            rtnList.add(dto);
-	        }
-
-	    } finally {
-
-	        DbUtil.closeStatement(stmt);
-	    }
-
-	    return rtnList;
 	}
 
-	//メールアドレス検索
+	/**
-	public List<EmployeeDTO> selectByMail(String mail) throws SQLException {
+	 * 社員テーブルに指定された情報を新規登録する
-	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	 *
-	    StringBuilder sql = new StringBuilder();
+	 * @throws SQLException
-
+	 * @throws ClassNotFoundException
-	    sql.append(" SELECT ");
+	 */
-	    sql.append(" employee.id_employee ");
+	// 部署ID入力
-	    sql.append(" ,employee.nm_employee ");
+	public void empInsert(String name, String kn, String mailaddress, String password, int idDepartment) throws SQLException, ClassNotFoundException {
-	    sql.append(" ,employee.kn_employee ");
+		DepartmentDAO depDao = new DepartmentDAO(con);
-	    sql.append(" ,employee.mail_address ");
+		if (depDao.selectById(idDepartment).size()!=0) {  // 存在しない部署IDが入力されたときは登録処理を行わない
-	    sql.append(" ,employee.password ");
+			StringBuilder sql = new StringBuilder();
-	    sql.append(" ,employee.id_department ");
+			sql.append(" INSERT INTO ");
-	    sql.append(" ,department.nm_department ");
+			sql.append("    " + TBL_NAME);
-	    sql.append(" FROM employee ");
+			sql.append(" (" + NM_EMPLOYEE + "," + KN_EMPLOYEE + "," + MAIL_ADDRESS + "," + PASSWORD + "," + ID_DEPARTMENT + ") ");
-	    sql.append(" INNER JOIN department ");
+			sql.append(" VALUES ");
-	    sql.append(" ON employee.id_department = department.id_department ");
+			sql.append(" (?, ?, ?, ?, ?) ");
-	    sql.append(" WHERE employee.mail_address = ? ");
+			System.out.println("指定された情報を登録しますか？ Y/y");
-
+			System.out.println("（Y/y以外の入力であればキャンセル）");
-	    try {
+			Scanner sc = new Scanner(System.in);
-
+			String flag = sc.nextLine();
-	        stmt = con.prepareStatement(sql.toString());
+			if (flag.equals("Y")||flag.equals("y")) {
-	        stmt.setString(1, mail);
+				try {
-	        rs = stmt.executeQuery();
+					this.stmt = con.prepareStatement(sql.toString());
-
+					stmt.setString(1,name);
-	        while (rs.next()) {
+					stmt.setString(2,kn);
-
+					stmt.setString(3,mailaddress);
-	            EmployeeDTO dto = new EmployeeDTO();
+					stmt.setString(4,password);
-
+					stmt.setInt(5,idDepartment);
-	            dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+					stmt.executeUpdate();
-	            dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+					System.out.println("登録が完了しました");
-	            dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+				}  finally {
-	            dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+					DbUtil.closeStatement(this.stmt);
-	            dto.setPassword(rs.getString(PASSWORD));
+				}
-	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+			}
-	            dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+		}
-
+	}
-	            rtnList.add(dto);
+	// 部署名入力
-	        }
+	public void empInsert(String name, String kn, String mailaddress, String password, String nmDepartment) throws SQLException, ClassNotFoundException {
-
+		DepartmentDAO depDao = new DepartmentDAO(con);
-	    } finally {
+		List<DepartmentDTO> rtnList = depDao.selectByNm(nmDepartment);
-
+		if (rtnList.size()==1) {  // 部署名が特定できないときは登録処理を行わない
-	        DbUtil.closeStatement(stmt);
+			DepartmentDTO department = rtnList.get(0);
-	    }
+			StringBuilder sql = new StringBuilder();
-
+			sql.append(" INSERT INTO ");
-	    return rtnList;
+			sql.append("    " + TBL_NAME);
+			sql.append(" (" + NM_EMPLOYEE + "," + KN_EMPLOYEE + "," + MAIL_ADDRESS + "," + PASSWORD + "," + ID_DEPARTMENT + ") ");
+			sql.append(" VALUES ");
+			sql.append(" (?, ?, ?, ?, ?) ");
+			System.out.println("指定された情報を登録しますか？ Y/y");
+			System.out.println("（Y/y以外の入力であればキャンセル）");
+			Scanner sc = new Scanner(System.in);
+			String flag = sc.nextLine();
+			if (flag.equals("Y")||flag.equals("y")) {
+				try {
+					this.stmt = con.prepareStatement(sql.toString());
+					stmt.setString(1,name);
+					stmt.setString(2,kn);
+					stmt.setString(3,mailaddress);
+					stmt.setString(4,password);
+					stmt.setInt(5,department.getIdDepartment());
+					stmt.executeUpdate();
+					System.out.println("登録が完了しました");
+				}  finally {
+					DbUtil.closeStatement(this.stmt);
+				}
+			}
+		} else if (rtnList.size()>1) {
+			System.out.println("入力された情報で部署を１つに特定できません");
+		}
 	}
 
-	//部署名検索
+	/**
-
+	 * 社員テーブルの指定された社員IDに一致するデータを引数の内容に更新する
-	public List<EmployeeDTO> selectByDepartment(String department) throws SQLException {
+	 *
-	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	 * @throws SQLException
-	    StringBuilder sql = new StringBuilder();
+	 * @throws ClassNotFoundException
-
+	 */
-	    sql.append(" SELECT ");
+	// 部署ID入力
-	    sql.append(" employee.id_employee ");
+	public void empUpdate(int idEmployee, String name, String kn, String mailaddress, String password, int idDepartment) throws SQLException, ClassNotFoundException {
-	    sql.append(" ,employee.nm_employee ");
+		EmployeeDTO employee = selectById(idEmployee).get(0);
-	    sql.append(" ,employee.kn_employee ");
+		if (name.trim().length()==0) name = employee.getNmEmployee();
-	    sql.append(" ,employee.mail_address ");
+		if (kn.trim().length()==0) kn = employee.getKnEmployee();
-	    sql.append(" ,employee.password ");
+		if (mailaddress.trim().length()==0) mailaddress = employee.getMailaddress();
-	    sql.append(" ,employee.id_department ");
+		if (password.trim().length()==0) password = employee.getPassword();
-	    sql.append(" ,department.nm_department ");
+		if (idDepartment==0) idDepartment = employee.getIdDepartment();
-	    sql.append(" FROM employee ");
+		DepartmentDAO depDao = new DepartmentDAO(con);
-	    sql.append(" INNER JOIN department ");
+		if (depDao.selectById(idDepartment).size()!=0) {  // 存在しない部署IDが入力されたときは更新処理を行わない
-	    sql.append(" ON employee.id_department = department.id_department ");
+			StringBuilder sql = new StringBuilder();
-	    sql.append(" WHERE department.nm_department = ? ");
+			sql.append(" UPDATE ");
-
+			sql.append("    " + TBL_NAME);
-	    try {
+			sql.append(" SET ");
-
+			sql.append("    " + NM_EMPLOYEE + " = " + "?" + ","); 
-	        stmt = con.prepareStatement(sql.toString());
+			sql.append("    " + KN_EMPLOYEE + " = " + "?" +","); 
-	        stmt.setString(1, department);
+			sql.append("    " + MAIL_ADDRESS + " = " + "?" + ","); 
-	        rs = stmt.executeQuery();
+			sql.append("    " + PASSWORD + " = " + "?" + ","); 
-
+			sql.append("    " + ID_DEPARTMENT + " = " + "?");
-	        while (rs.next()) {
+			sql.append(" WHERE ");
-
+			sql.append("    " + ID_EMPLOYEE + " = " + "?");
-	            EmployeeDTO dto = new EmployeeDTO();
+			System.out.println("指定されたIDの情報を更新しますか？ Y/y");
-
+			System.out.println("（Y/y以外の入力であればキャンセル）");
-	            dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+			Scanner sc = new Scanner(System.in);
-	            dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+			String flag = sc.nextLine();
-	            dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+			if (flag.equals("Y")||flag.equals("y")) {
-	            dto.setMailAddress(rs.getString(MAIL_ADDRESS));
+				try {
-	            dto.setPassword(rs.getString(PASSWORD));
+					this.stmt = con.prepareStatement(sql.toString());
-	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+					stmt.setString(1,name);
-	            dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+					stmt.setString(2,kn);
-
+					stmt.setString(3,mailaddress);
-	            rtnList.add(dto);
+					stmt.setString(4,password);
-	        }
+					stmt.setInt(5,idDepartment);
-
+					stmt.setInt(6,idEmployee);
-	    } finally {
+					stmt.executeUpdate();
-
+					System.out.println("更新が完了しました");
-	        DbUtil.closeStatement(stmt);
+				}  finally {
-	    }
+					DbUtil.closeStatement(this.stmt);
-
+				}
-	    return rtnList;
+			}
+		}
 	}
-	
+	// 部署名入力
-	//社員情報削除
+	public void empUpdate(int idEmployee, String name, String kn, String mailaddress, String password, String NmDepartment) throws SQLException, ClassNotFoundException {
-	public void empDelete(int id) throws SQLException {
+		EmployeeDTO employee = selectById(idEmployee).get(0);
-	    //SQL作成
+		if (name.trim().length()==0) name = employee.getNmEmployee();
-	    StringBuilder sql = new StringBuilder();
+		if (kn.trim().length()==0) kn = employee.getKnEmployee();
-	    sql.append(" DELETE ");
+		if (mailaddress.trim().length()==0) mailaddress = employee.getMailaddress();
-	    sql.append(" FROM ");
+		if (password.trim().length()==0) password = employee.getPassword();
-	    sql.append("    " + TBL_NAME);
+		DepartmentDAO depDao = new DepartmentDAO(con);
-	    sql.append(" WHERE ");
+		List<DepartmentDTO> rtnList = depDao.selectByNm(NmDepartment);
-	    sql.append("    " + ID_EMPLOYEE + " = ?");
+		if (rtnList.size()==1) {  // 部署名が特定できないときは登録処理を行わない
-
+			DepartmentDTO department = rtnList.get(0);
-	    try {
+			StringBuilder sql = new StringBuilder();
-	        //PreparedStatement生成
+			sql.append(" UPDATE ");
-	        stmt = con.prepareStatement(sql.toString());
+			sql.append("    " + TBL_NAME);
-	        //値設定
+			sql.append(" SET ");
-	        stmt.setInt(1, id);
+			sql.append("    " + NM_EMPLOYEE + " = " + "?" + ","); 
-	        //SQL実行
+			sql.append("    " + KN_EMPLOYEE + " = " + "?" + ","); 
-	        stmt.executeUpdate();
+			sql.append("    " + MAIL_ADDRESS + " = " + "?" + ","); 
-
+			sql.append("    " + PASSWORD + " = " + "?" + ","); 
-	    } finally {
+			sql.append("    " + ID_DEPARTMENT + " = " + "?");
-
+			sql.append(" WHERE ");
-	        DbUtil.closeStatement(stmt);
+			sql.append("    " + ID_EMPLOYEE + " = " + "?");
-	    }
+			System.out.println("指定されたIDの情報を更新しますか？ Y/y");
-	}
+			System.out.println("（Y/y以外の入力であればキャンセル）");
-	
+			Scanner sc = new Scanner(System.in);
-	//社員情報登録
+			String flag = sc.nextLine();
-	public void empInsert(
+			if (flag.equals("Y")||flag.equals("y")) {
-	        String name,
+				try {
-	        String kana,
+					this.stmt = con.prepareStatement(sql.toString());
-	        String mail,
+					stmt.setString(1,name);
-	        String password,
+					stmt.setString(2,kn);
-	        int departmentId)
+					stmt.setString(3,mailaddress);
-	        throws SQLException {
+					stmt.setString(4,password);
-	    //SQL作成
+					stmt.setInt(5,department.getIdDepartment());
-	    StringBuilder sql = new StringBuilder();
+					stmt.setInt(6,idEmployee);
-
+					stmt.executeUpdate();
-	    sql.append(" INSERT INTO employee ");
+					System.out.println("更新が完了しました");
-	    sql.append(" ( ");
+				}  finally {
-	    sql.append(" nm_employee, ");
+					DbUtil.closeStatement(this.stmt);
-	    sql.append(" kn_employee, ");
+				}
-	    sql.append(" mail_address, ");
+			}
-	    sql.append(" password, ");
+		} else if (rtnList.size()>1) {
-	    sql.append(" id_department ");
+			System.out.println("入力された情報で部署を１つに特定できません");
-	    sql.append(" ) ");
+		}
-	    sql.append(" VALUES ");
-	    sql.append(" (?, ?, ?, ?, ?) ");
-
-	    try {
-
-	        //PreparedStatement生成
-	        stmt = con.prepareStatement(sql.toString());
-	        //値設定
-	        stmt.setString(1, name);
-	        stmt.setString(2, kana);
-	        stmt.setString(3, mail);
-	        stmt.setString(4, password);
-	        stmt.setInt(5, departmentId);
-
-	        //SQL実行
-	        stmt.executeUpdate();
-
-	    } finally {
-
-	        DbUtil.closeStatement(stmt);
-	    }
-	}
-	
-	//社員情報更新
-	public void empUpdate(
-	        int id,
-	        String name,
-	        String kana,
-	        String mail,
-	        String password,
-	        int departmentId)
-	        throws SQLException {
-
-	    //SQL作成
-	    StringBuilder sql = new StringBuilder();
-
-	    sql.append(" UPDATE employee ");
-	    sql.append(" SET ");
-	    sql.append(" nm_employee = ?, ");
-	    sql.append(" kn_employee = ?, ");
-	    sql.append(" mail_address = ?, ");
-	    sql.append(" password = ?, ");
-	    sql.append(" id_department = ? ");
-	    sql.append(" WHERE id_employee = ? ");
-
-	    try {
-
-	        //PreparedStatement生成
-	        stmt = con.prepareStatement(sql.toString());
-	        //値設定
-	        stmt.setString(1, name);
-	        stmt.setString(2, kana);
-	        stmt.setString(3, mail);
-	        stmt.setString(4, password);
-	        stmt.setInt(5, departmentId);
-	        stmt.setInt(6, id);
-
-	        // SQL実行
-	        stmt.executeUpdate();
-
-	    } finally {
-
-	        // Statement切断
-	        DbUtil.closeStatement(stmt);
-	    }
 	}
 
 }

src/com/rhizome/example/dto/DepartmentDTO.java

@@ -2,22 +2,26 @@ package com.rhizome.example.dto;
 
 public class DepartmentDTO {
 
-	private Integer idDepartment;
+	private int idDepartment;
 	private String nmDepartment;
 
-	public Integer getIdDepartment() {
+	public int getIdDepartment() {
 		return idDepartment;
 	}
-
+	public void setIdDepartment(int idDepartment) {
-	public void setIdDepartment(Integer idDepartment) {
 		this.idDepartment = idDepartment;
 	}
-
 	public String getNmDepartment() {
 		return nmDepartment;
 	}
-
 	public void setNmDepartment(String nmDepartment) {
 		this.nmDepartment = nmDepartment;
 	}
+
+	@Override
+	public String toString() {
+		return this.getIdDepartment() + "	"
+			  +this.getNmDepartment();
+	}
+
 }

src/com/rhizome/example/dto/EmployeeDTO.java

@@ -2,19 +2,17 @@ package com.rhizome.example.dto;
 
 public class EmployeeDTO {
 
-	private Integer idEmployee;
+	private int idEmployee;
 	private String nmEmployee;
 	private String knEmployee;
-	private String mailAddress;
+	private String mailaddress;
 	private String password;
-	private Integer idDepartment;
+	private int idDepartment;
-	private String nmDepartment;
 
-
+	public int getIdEmployee() {
-	public Integer getIdEmployee() {
 		return idEmployee;
 	}
-	public void setIdEmployee(Integer idEmployee) {
+	public void setIdEmployee(int idEmployee) {
 		this.idEmployee = idEmployee;
 	}
 	public String getNmEmployee() {
@@ -29,11 +27,11 @@ public class EmployeeDTO {
 	public void setKnEmployee(String knEmployee) {
 		this.knEmployee = knEmployee;
 	}
-	public String getMailAddress() {
+	public String getMailaddress() {
-		return mailAddress;
+		return mailaddress;
 	}
-	public void setMailAddress(String mailAddress) {
+	public void setMailaddress(String mailaddress) {
-		this.mailAddress = mailAddress;
+		this.mailaddress = mailaddress;
 	}
 	public String getPassword() {
 		return password;
@@ -41,19 +39,21 @@ public class EmployeeDTO {
 	public void setPassword(String password) {
 		this.password = password;
 	}
-	public Integer getIdDepartment() {
+	public int getIdDepartment() {
 		return idDepartment;
 	}
-	public void setIdDepartment(Integer idDepartment) {
+	public void setIdDepartment(int idDepartment) {
 		this.idDepartment = idDepartment;
 	}
 
-	public String getNmDepartment() {
+	@Override
-	    return nmDepartment;
+	public String toString() {
-	}
+		return this.getIdEmployee() + "	"
-	
+			  +this.getNmEmployee() + "	"
-	public void setNmDepartment(String nmDepartment) {
+			  +this.getKnEmployee() + "	"
-	    this.nmDepartment = nmDepartment;
+			  +this.getMailaddress() + "	"
+			  +this.getPassword() + "	"
+			  +this.getIdDepartment();
 	}
 
 }

src/com/rhizome/example/main/Main.java

@@ -6,9 +6,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
-import com.rhizome.example.dao.DepartmentDAO;
 import com.rhizome.example.dao.EmployeeDAO;
-import com.rhizome.example.dto.DepartmentDTO;
 import com.rhizome.example.dto.EmployeeDTO;
 import com.rhizome.example.util.DbUtil;
 
@@ -51,53 +49,35 @@ public class Main {
 		System.out.println("現在のメンテナンス対象テーブル：" + targetTableName(tblFlg));
 		System.out.println("1:検索 2:登録 3:更新 4:削除 9:テーブル切替 0:終了");
 		String ope = sc.nextLine();
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
 		switch (ope) {
 		case "1":
-			//社員テーブル
+			empSelect();
-			if (tblFlg == 0) {
-				empSelect();
-
-				//部署テーブル
-			} else {
-				deptSelect();
-			}
 			break;
 		case "2":
-			//社員テーブル
+			empDao.empInsert(inputCheck("社員名", false),
-			if (tblFlg == 0) {
+							 inputCheck("フリガナ", false),
-				empInsert();
+							 inputCheck("メールアドレス", false),
-
+							 inputCheck("パスワード", false),
-				//部署テーブル
+							 Integer.parseInt(inputCheck("部署ID", true)));
-			} else {
-				deptInsert();
-			}
 			break;
 		case "3":
-			//社員テーブル
+			int id = Integer.parseInt(inputCheck("ID", true));
-			if (tblFlg == 0) {
+			if (empDao.selectById(id).size()==0) break;  // 社員IDの照合に失敗した場合は処理を抜ける
-				empUpdate();
+			else {
-
+				empDao.empUpdate(id,
-				//部署テーブル
+								 inputCheck("社員名", false),
-			} else {
+								 inputCheck("フリガナ", false),
-				deptUpdate();
+								 inputCheck("メールアドレス", false),
+								 inputCheck("パスワード", false),
+								 Integer.parseInt(inputCheck("部署ID", true)));
+				break;
 			}
-			break;
 		case "4":
-			//社員テーブル
+			empDao.empDelete(Integer.parseInt(inputCheck("ID", true)));
-			if (tblFlg == 0) {
-				empDelete();
-
-				//部署テーブル
-			} else {
-				deptDelete();
-			}
 			break;
 		case "9":
-			if (tblFlg == 0) {
-				tblFlg = 1;
-			} else {
-				tblFlg = 0;
-			}		
 			return;
 		case "0":
 			System.out.println("システムを終了します");
@@ -125,137 +105,19 @@ public class Main {
 			case "1":
 				empList = empDao.selectAll();
 				break;
-
 			case "2":
-			    //検索項目選択
+				empList = empDao.selectById(Integer.parseInt(inputCheck("ID", true)));
-				System.out.println("1:ID 2:社員名 3:フリガナ 4:メールアドレス 5:部署名");
+				break;
-			    String condition = sc.nextLine();
-			    switch (condition) {
-
-			    //ID検索
-			    case "1":
-			        String id = inputCheck("ID", true);
-			        empList = empDao.selectById(Integer.parseInt(id));
-
-			        break;
-
-			    //社員名検索
-			    case "2":
-			        String name = inputCheck("社員名", false);
-			        empList = empDao.selectByName(name);
-
-			        break;
-			        
-			        //フリガナ検索
-			    case "3":
-			        String kana = inputCheck("フリガナ", false);
-			        empList = empDao.selectByKana(kana);
-
-			        break;
-
-			    //メールアドレス検索
-			    case "4":
-			        String mail = inputCheck("メールアドレス", false);
-			        empList = empDao.selectByMail(mail);
-
-			        break;
-
-			    //部署名検索
-			    case "5":
-			        String department = inputCheck("部署名", false);
-			        empList = empDao.selectByDepartment(department);
-
-			        break;
-
-			    default:
-
-			        return;
-			    }
-
-			    break;
-
 			default:
 				return;
 			}
-
-			if (empList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-				return;
-			}
-
-			//最大文字数取得
-			int maxName = 0;
-			int maxKana = 0;
-			int maxMail = 0;
-			int maxPassword = 0;
-			int maxDepartment = 0;
-
 			for (EmployeeDTO emp : empList) {
-
+				System.out.println(emp);
-				if (getDisplayLength(emp.getNmEmployee()) > maxName) {
-					maxName = getDisplayLength(emp.getNmEmployee());
-				}
-
-				if (getDisplayLength(emp.getKnEmployee()) > maxKana) {
-					maxKana = getDisplayLength(emp.getKnEmployee());
-				}
-
-				if (getDisplayLength(emp.getMailAddress()) > maxMail) {
-					maxMail = getDisplayLength(emp.getMailAddress());
-				}
-
-				if (getDisplayLength(emp.getPassword()) > maxPassword) {
-					maxPassword = getDisplayLength(emp.getPassword());
-				}
-
-				if (getDisplayLength(emp.getNmDepartment())
-						> maxDepartment) {
-					maxDepartment = getDisplayLength(emp.getNmDepartment());
-				}
-			}
-
-
-
-			for (EmployeeDTO emp : empList) {
-
-				System.out.println(
-						adjust(String.valueOf(emp.getIdEmployee()),10)
-						+ adjust(emp.getNmEmployee(), maxName + 5)
-						+ adjust(emp.getKnEmployee(), maxKana + 5)
-						+ adjust(emp.getMailAddress(), maxMail + 5)
-						+ adjust(emp.getPassword(), maxPassword + 5)
-						+ adjust(emp.getNmDepartment(), maxDepartment + 5));
 			}
 		} finally {
 			DbUtil.closeConnection(empDao.con);
 		}
 	}
-	//表示幅取得
-	//半角=1
-	//全角=2
-	public static int getDisplayLength(String str) {
-		int length = 0;
-		for (char c : str.toCharArray()) {
-			//ASCIIコードで算出
-			if (c <= 127) {
-				length += 1;
-			} else {
-				length += 2;
-			}
-		}
-		return length;
-	}
-
-
-	//指定文字数まで空白を追加
-	public static String adjust(String str, int length) {
-		StringBuilder sb = new StringBuilder(str);
-
-		while (getDisplayLength(sb.toString()) < length) {
-			sb.append(" ");
-		}
-		return sb.toString();
-	}
 
 	/**
 	 * フラグを判定し、テーブル名を取得する
@@ -306,401 +168,4 @@ public class Main {
 		}
 		return str;
 	}
-
-	//更新用入力
-	//Enterのみの場合は現在値を返す
-	public static String inputUpdate(
-			String titleName,
-			String currentValue) {
-
-		System.out.println(
-				titleName
-				+ "を入力してください"
-				+ "（現在値：" + currentValue + "）");
-
-		String str = sc.nextLine();
-
-		//Enterのみの場合は現在値を返却
-		if (str.trim().length() == 0) {
-			return currentValue;
-		}
-
-		return str;
-	}
-
-	//社員情報を削除する
-	public static void empDelete() throws ClassNotFoundException, SQLException {
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-
-		try {
-			//削除対象ID入力
-			String strId = inputCheck("ID", true);
-			int id = Integer.parseInt(strId);
-
-			//入力されたID確認
-			List<EmployeeDTO> empList =  empDao.selectById(id);
-			//データが存在しない場合
-			if (empList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-
-				return;
-			}
-
-			//削除確認メッセージ表示
-			System.out.println("指定されたIDの情報を削除しますか？ Y/y");
-			System.out.println("(Y/y以外の入力であればキャンセル)");
-
-			String answer = sc.nextLine();
-
-			//Yまたはyが入力された場合のみ削除
-			if ("Y".equals(answer) || "y".equals(answer)) {
-				//社員情報削除
-				empDao.empDelete(id);
-
-				System.out.println("削除が完了しました");
-			}
-
-		} finally {
-
-			DbUtil.closeConnection(empDao.con);
-		}
-	}
-
-	//社員情報登録
-	public static void empInsert() throws ClassNotFoundException, SQLException {
-
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-		DepartmentDAO deptDao = new DepartmentDAO(con);
-
-		try {
-
-			//社員名入力
-			String name = inputCheck("社員名", false);
-			//フリガナ入力
-			String kana = inputCheck("フリガナ", false);
-			//メールアドレス入力
-			String mail = inputCheck("メールアドレス", false);
-			//パスワード入力
-			String password = inputCheck("パスワード", false);
-			//部署ID入力
-			String departmentId = inputCheck("部署ID", true);
-			
-		    //部署IDを数値変換
-		    int deptId = Integer.parseInt(departmentId);
-
-		    //入力された部署IDが存在するかチェック
-		    if (!deptDao.existsDepartment(deptId)) {
-
-		        System.out.println("入力された部署IDは存在しません");
-
-		        return;
-		    }
-		    
-		    //登録確認
-		    System.out.println("社員情報を登録しますか？ Y/y");
-		    System.out.println("(Y/y以外の入力であればキャンセル)");
-
-		    String answer = sc.nextLine();
-
-		    if (!"Y".equals(answer) && !"y".equals(answer)) {
-		        return;
-		    }
-			
-			//登録処理
-		    empDao.empInsert(
-		            name,
-		            kana,
-		            mail,
-		            password,
-		            deptId);
-
-			System.out.println("登録が完了しました");
-
-		} finally {
-
-			DbUtil.closeConnection(empDao.con);
-		}
-	}
-
-	//社員情報更新
-	public static void empUpdate() throws ClassNotFoundException, SQLException {
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-		//部署テーブル存在確認用DAO生成
-		DepartmentDAO deptDao = new DepartmentDAO(con);
-
-		try {
-			//更新対象ID入力
-			String strId = inputCheck("ID", true);
-			int id = Integer.parseInt(strId);
-
-			//存在チェック
-			List<EmployeeDTO> empList = empDao.selectById(id);
-
-			if (empList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-
-				return;
-			}
-
-
-			EmployeeDTO emp = empList.get(0);
-
-			//Enterのみの場合は現在値をそのまま使用
-			//社員名入力
-			String name = inputUpdate("社員名", emp.getNmEmployee());
-			//フリガナ入力
-			String kana = inputUpdate("フリガナ", emp.getKnEmployee());
-			//メールアドレス入力
-			String mail = inputUpdate("メールアドレス", emp.getMailAddress());
-			//パスワード入力
-			String password = inputUpdate("パスワード", emp.getPassword());
-			//部署ID入力
-			String departmentId = inputUpdate("部署ID", String.valueOf(emp.getIdDepartment()));
-			
-			//部署IDを数値変換
-			int deptId = Integer.parseInt(departmentId);
-			//入力された部署IDが存在するかチェック
-			if (!deptDao.existsDepartment(deptId)) {
-			    System.out.println("入力された部署IDは存在しません");
-
-			    return;
-			}
-			
-			//更新確認
-			System.out.println("社員情報を更新しますか？ Y/y");
-			System.out.println("(Y/y以外の入力であればキャンセル)");
-
-			String answer = sc.nextLine();
-
-			if (!"Y".equals(answer) && !"y".equals(answer)) {
-			    return;
-			}
-			
-			//更新処理
-			empDao.empUpdate(
-			        id,
-			        name,
-			        kana,
-			        mail,
-			        password,
-			        deptId);
-
-			System.out.println("更新が完了しました");
-
-		} finally {
-
-			DbUtil.closeConnection(empDao.con);
-		}
-	}
-
-	//テーブル切り替え
-	//ここから部署テーブル
-	//部署テーブルから情報を検索する
-	public static void deptSelect() throws ClassNotFoundException, SQLException {
-
-		//検索結果格納用リスト
-		List<DepartmentDTO> deptList = new ArrayList<>();
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		//DAO生成
-		DepartmentDAO deptDao = new DepartmentDAO(con);
-		//検索方法選択
-		System.out.println("1:全検索 2:条件検索 それ以外:戻る");
-		String select = sc.nextLine();
-
-		try {
-
-			switch (select) {
-
-			//全件検索
-			case "1":
-				deptList = deptDao.selectAll();
-				break;
-
-			//条件検索
-			case "2":
-			    //検索項目選択
-			    System.out.println("1:ID 2:部署名");
-			    String condition = sc.nextLine();
-			    switch (condition) {
-
-			    //ID検索
-			    case "1":
-			        String id = inputCheck("ID", true);
-			        deptList = deptDao.selectById(Integer.parseInt(id));
-
-			        break;
-
-			    //部署名検索
-			    case "2":
-			        String name = inputCheck("部署名", false);
-			        deptList = deptDao.selectByName(name);
-
-			        break;
-
-			    default:
-
-			        return;
-			    }
-
-			    break;
-
-			//メニューへ戻る
-			default:
-
-			    return;
-			}
-
-			//検索結果0件の場合
-			if (deptList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-
-				return;
-			}
-
-			//検索結果表示
-			for (DepartmentDTO dept : deptList) {
-
-				System.out.println(
-						dept.getIdDepartment()
-						+ "\t"
-						+ dept.getNmDepartment());
-			}
-
-		} finally {
-
-			DbUtil.closeConnection(deptDao.con);
-		}
-	}
-
-	//部署情報登録
-	public static void deptInsert() throws ClassNotFoundException, SQLException {
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		//DAO生成
-		DepartmentDAO deptDao =
-				new DepartmentDAO(con);
-
-		try {
-			//部署名入力
-			String departmentName = inputCheck("部署名", false);
-			
-			//登録確認
-			System.out.println("部署情報を登録しますか？ Y/y");
-			System.out.println("(Y/y以外の入力であればキャンセル)");
-
-			String answer = sc.nextLine();
-
-			if (!"Y".equals(answer)  && !"y".equals(answer)) {
-
-			    return;
-			}
-			
-
-			//登録処理
-			deptDao.deptInsert(departmentName);
-			System.out.println("登録が完了しました");
-
-		} finally {
-
-			DbUtil.closeConnection(deptDao.con);
-		}
-	}
-
-	//部署情報更新
-	public static void deptUpdate() throws ClassNotFoundException, SQLException {
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		//DAO生成
-		DepartmentDAO deptDao =	new DepartmentDAO(con);
-
-		try {
-			//更新対象ID入力
-			String strId = inputCheck("ID", true);
-
-			int id = Integer.parseInt(strId);
-
-			//存在チェック
-			List<DepartmentDTO> deptList = deptDao.selectById(id);
-
-			//データが存在しない場合
-			if (deptList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-				return;
-			}
-
-			//部署名入力
-			String departmentName = inputCheck("部署名", false);
-			
-			//更新確認
-			System.out.println("部署情報を更新しますか？ Y/y");
-			System.out.println("(Y/y以外の入力であればキャンセル)");
-
-			String answer = sc.nextLine();
-
-			if (!"Y".equals(answer) && !"y".equals(answer)) {
-			    return;
-			}
-
-			//更新処理
-			deptDao.deptUpdate(id, departmentName);
-
-			System.out.println("更新が完了しました");
-
-		} finally {
-
-			DbUtil.closeConnection(
-					deptDao.con);
-		}
-	}
-
-	//部署情報を削除する
-	public static void deptDelete() throws ClassNotFoundException, SQLException {
-		//DB接続
-		Connection con = DbUtil.getConnection();
-		//DAO生成
-		DepartmentDAO deptDao = new DepartmentDAO(con);
-
-		try {
-			//削除対象ID入力
-			String strId = inputCheck("ID", true);
-			int id = Integer.parseInt(strId);
-
-			//入力されたIDの存在確認
-			List<DepartmentDTO> deptList = deptDao.selectById(id);
-
-			//データが存在しない場合
-			if (deptList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-
-				return;
-			}
-
-			//削除確認メッセージ表示
-			System.out.println("指定されたIDの情報を削除しますか？ Y/y");
-			System.out.println("(Y/y以外の入力であればキャンセル)");
-			String answer = sc.nextLine();
-
-			//Yまたはyが入力された場合のみ削除
-			if ("Y".equals(answer) || "y".equals(answer)) {
-
-				//部署情報削除
-				deptDao.deptDelete(id);
-				System.out.println("削除が完了しました");
-			}
-
-		} finally {
-
-			DbUtil.closeConnection(deptDao.con);
-		}
-	}
-
-
-
 }

src/com/rhizome/example/main/MainNew.java

@@ -0,0 +1,413 @@
+package com.rhizome.example.main;
+
+import java.nio.charset.Charset;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+import com.rhizome.example.dao.DepartmentDAO;
+import com.rhizome.example.dao.EmployeeDAO;
+import com.rhizome.example.dto.DepartmentDTO;
+import com.rhizome.example.dto.EmployeeDTO;
+import com.rhizome.example.util.DbUtil;
+
+/**
+ * @author IT-College
+ * @version 1.0
+ */
+public class MainNew {
+	static Scanner sc = new Scanner(System.in);
+	/**
+	 * テーブル切り替え用変数 0：Employeeテーブル 1：Departmentテーブル
+	 */
+	static int tblFlg = 0;
+
+	/**
+	 * 処理開始位置
+	 *
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		System.out.println("システムを開始します");
+		while (true) {
+			try {
+				new MainNew().start();
+			} catch (Exception e) {
+				System.out.println("予期せぬエラーが発生しました");
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/**
+	 * 処理選択を行う
+	 *
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public void start() throws ClassNotFoundException, SQLException {
+		System.out.println();
+		System.out.println("現在のメンテナンス対象テーブル：" + targetTableName(tblFlg));
+		System.out.println("1:検索 2:登録 3:更新 4:削除 9:テーブル切替 0:終了");
+		String ope = sc.nextLine();
+		switch (ope) {
+		case "1":
+			Select(tblFlg);
+			break;
+		case "2":
+			Insert(tblFlg);
+			break;
+		case "3":
+			Update(tblFlg);
+			break;
+		case "4":
+			Delete(tblFlg);
+			break;
+		case "9":
+			tblFlg = ChangeTable(tblFlg);
+			break;
+		case "0":
+			System.out.println("システムを終了します");
+			System.exit(0);
+		default:
+			System.out.println("指定の番号を入力してください");
+			break;
+		}
+	}
+
+	/**
+	 * 社員テーブルから情報を検索する
+	 *
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void empSelect() throws ClassNotFoundException, SQLException {
+		List<EmployeeDTO> empList = new ArrayList<>();
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+		System.out.println("1:全検索 2:条件検索 それ以外:戻る");
+		String select = sc.nextLine();
+		try {
+			switch (select) {
+			case "1":
+				empList = empDao.selectAll();
+				break;
+			case "2":
+				String infoEmployee = inputCheck("社員ID", false, "AllowEmpty");
+				int idEmployee = 0;  // 未入力時は０を渡す
+				try {
+					idEmployee = Integer.parseInt(infoEmployee);
+				} catch (NumberFormatException err) {}
+				String name = inputCheck("社員名", false, "AllowEmpty");
+				String kn = inputCheck("フリガナ", false, "AllowEmpty");
+				String mailaddress = inputCheck("メールアドレス", false, "AllowEmpty");
+				String password = inputCheck("パスワード", false, "AllowEmpty");
+				String infoDepartment = (inputCheck("部署情報", false, "AllowEmpty"));
+				try {
+					int idDepartment = Integer.parseInt(infoDepartment);
+					empList = empDao.empSelect(idEmployee, name, kn, mailaddress, password, idDepartment);
+				} catch (NumberFormatException err) {
+					if (infoDepartment.trim().length()==0) {
+						empList = empDao.empSelect(idEmployee, name, kn, mailaddress, password, 0);  // 未入力時は０を渡す
+					} else {
+						empList = empDao.empSelect(idEmployee, name, kn, mailaddress, password, infoDepartment);
+					}
+				}
+				break;
+			default:
+				return;
+			}
+			for (EmployeeDTO emp : empList) {
+				//System.out.println(emp);
+				System.out.println(toStringEmployee(emp));
+			}
+		} finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+	}
+
+	/**
+	 * 部署テーブルから情報を検索する
+	 *
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void depSelect() throws ClassNotFoundException, SQLException {
+		List<DepartmentDTO> depList = new ArrayList<>();
+		Connection con = DbUtil.getConnection();
+		DepartmentDAO depDao = new DepartmentDAO(con);
+		System.out.println("1:全検索 2:条件検索 それ以外:戻る");
+		String select = sc.nextLine();
+		try {
+			switch (select) {
+			case "1":
+				depList = depDao.selectAll();
+				break;
+			case "2":
+				depList = depDao.selectById(Integer.parseInt(inputCheck("部署ID", true)));
+				break;
+			default:
+				return;
+			}
+			for (DepartmentDTO dep : depList) {
+				//System.out.println(dep);
+				System.out.println(toStringDepartment(dep));
+			}
+		} finally {
+			DbUtil.closeConnection(depDao.con);
+		}
+	}
+
+	/**
+	 * フラグを判定し、テーブル名を取得する
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @return テーブル名
+	 */
+	public static String targetTableName(int tblFlg) {
+		String rtnTblName = "";
+		if (tblFlg == 0) {
+			rtnTblName = "社員テーブル";
+		} else {
+			rtnTblName = "部署テーブル";
+		}
+		return rtnTblName;
+	}
+
+	/**
+	 * フラグを判定し、検索機能を呼び出す
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void Select(int tblFlg) throws ClassNotFoundException, SQLException {
+		if (tblFlg == 0) {
+			empSelect();
+		} else {
+			depSelect();
+		}
+	}
+
+	/**
+	 * フラグを判定し、登録機能を呼び出す
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void Insert(int tblFlg) throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		if (tblFlg == 0) {
+			EmployeeDAO empDao = new EmployeeDAO(con);
+			String name = inputCheck("社員名", false);
+			String kn = inputCheck("フリガナ", false);
+			String mailaddress = inputCheck("メールアドレス", false);
+			String password = inputCheck("パスワード", false);
+			String infoDepartment = inputCheck("部署情報", false);
+			try {
+				int idDepartment = Integer.parseInt(infoDepartment);
+				empDao.empInsert(name, kn, mailaddress, password, idDepartment);
+			} catch (NumberFormatException err) {
+				empDao.empInsert(name, kn, mailaddress, password, infoDepartment);
+			}
+		} else {
+			DepartmentDAO depDao = new DepartmentDAO(con);
+			depDao.depInsert(inputCheck("部署名", false));
+		}
+	}
+
+	/**
+	 * フラグを判定し、更新機能を呼び出す
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void Update(int tblFlg) throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		if (tblFlg == 0) {
+			EmployeeDAO empDao = new EmployeeDAO(con);
+			int idEmployee = Integer.parseInt(inputCheck("社員ID", true));
+			if (empDao.selectById(idEmployee).size()==0) {}  // 社員IDの照合に失敗した場合は更新処理を行わない
+			else {
+				String name = inputCheck("社員名", false, "AllowEmpty");
+				String kn = inputCheck("フリガナ", false, "AllowEmpty");
+				String mailaddress = inputCheck("メールアドレス", false, "AllowEmpty");
+				String password = inputCheck("パスワード", false, "AllowEmpty");
+				String infoDepartment = (inputCheck("部署情報", false, "AllowEmpty"));
+				try {
+					int idDepartment = Integer.parseInt(infoDepartment);
+					empDao.empUpdate(idEmployee, name, kn, mailaddress, password, idDepartment);
+				} catch (NumberFormatException err) {
+					if (infoDepartment.trim().length()==0) {
+						empDao.empUpdate(idEmployee, name, kn, mailaddress, password, 0);  // 未入力時は０を渡す
+					} else {
+						empDao.empUpdate(idEmployee, name, kn, mailaddress, password, infoDepartment);
+					}
+				}
+			}
+		} else {
+			DepartmentDAO depDao = new DepartmentDAO(con);
+			int id = Integer.parseInt(inputCheck("部署ID", true));
+			if (depDao.selectById(id).size()==0) {}  // 部署IDの照合に失敗した場合は更新処理を行わない
+			else {
+				depDao.depUpdate(id,
+							 	 inputCheck("部署名", false));
+			}
+		}
+	}
+
+	/**
+	 * フラグを判定し、削除機能を呼び出す
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public static void Delete(int tblFlg) throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		if (tblFlg == 0) {
+			EmployeeDAO empDao = new EmployeeDAO(con);
+			empDao.empDelete(Integer.parseInt(inputCheck("社員ID", true)));  // 社員IDの照合に失敗した場合は削除処理を行わない
+		} else {
+			DepartmentDAO depDao = new DepartmentDAO(con);
+			depDao.depDelete(Integer.parseInt(inputCheck("部署ID", true)));  // 部署IDの照合に失敗した場合は削除処理を行わない
+		}
+	}
+	
+	/**
+	 * テーブルを切り替える
+	 *
+	 * @param tblFlg
+	 *            テーブル名判定用フラグ
+	 * @return 変更後テーブル名判定用フラグ
+	 */
+	public static int ChangeTable(int tblFlg) {
+		if (tblFlg==0) {
+			tblFlg = 1;
+		} else {
+			tblFlg = 0;
+		}
+		return tblFlg;
+	}
+
+	/**
+	 * 入力値を判定し、返却する
+	 *
+	 * @param titleName
+	 *            入力項目名
+	 * @param flg
+	 *            数値チェック可否フラグ
+	 * @return 入力内容
+	 */
+	// 入力必須
+	public static String inputCheck(String titleName, boolean flg) {
+		String str = null;
+		while (true) {
+			System.out.println(titleName + "を入力してください");
+			str = sc.nextLine();
+			if (str.trim().length() == 0) {
+				System.out.println(titleName + "は入力必須です。");
+				continue;
+			}
+			if (flg) {
+				if (str.trim().length() > 0) {
+					try {
+						Integer.parseInt(str);
+					} catch (NumberFormatException e) {
+						System.out.println(titleName + "は数値入力です");
+						continue;
+					}
+				}
+			}
+			break;
+		}
+		return str;
+	}
+	// 未入力許可
+	public static String inputCheck(String titleName, boolean flg, String AllowEmpty) {
+		String str = null;
+		while (true) {
+			System.out.println(titleName + "を入力してください");
+			str = sc.nextLine();
+			if (flg) {
+				if (str.trim().length() > 0) {
+					try {
+						Integer.parseInt(str);
+					} catch (NumberFormatException e) {
+						System.out.println(titleName + "は数値入力です");
+						continue;
+					}
+				}
+			}
+			break;
+		}
+		return str;
+	}
+
+	/**
+	 * 社員テーブルの出力文字列を生成する
+	 * ・各列の横幅が揃うように位置を調整する
+	 * ・部署IDを部署名に変更する
+	 *
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 * @return 出力文字列
+	 */
+	public static String toStringEmployee(EmployeeDTO employee) throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		DepartmentDAO depDao = new DepartmentDAO(con);
+		return format(8, employee.getIdEmployee())
+			  +format(16, employee.getNmEmployee())
+			  +format(24, employee.getKnEmployee())
+			  +format(24, employee.getMailaddress())
+			  +format(8, employee.getPassword())
+			  +format(16, depDao.getNmDepartment(employee.getIdDepartment()));
+	}
+
+	/**
+	 * 部署テーブルの出力文字列を生成する
+	 * ・各列の横幅が揃うように位置を調整する
+	 * 
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 * @return 出力文字列
+	 */
+	public static String toStringDepartment(DepartmentDTO department) throws ClassNotFoundException, SQLException {
+		return format(8, department.getIdDepartment())
+			  +format(12, department.getNmDepartment());
+	}
+
+	/**
+	 * 出力文字数の表示幅が一定になるように空白を追加する
+	 *
+	 * @param bytelength
+	 *            指定表示幅
+	 * @param input
+	 *            空白を追加する文字列
+	 * @return 空白を追加した文字列
+	 */
+	// 文字列入力
+	public static String format(int bytelength, String input) {
+		int diff = (input.getBytes(Charset.forName("UTF-8")).length - input.length())/2;  // diff=全角文字(3byte)→文字数／半角文字(1byte)→０
+		if (bytelength-diff>=0) {
+			return String.format("%-"+(bytelength-diff)+"s", input);  // 表示幅=指定幅-全角文字表示に必要な追加表示幅
+		} else {
+			return input;
+		}
+	}
+	// 整数入力
+	public static String format(int bytelength, int id) {
+		String input = Integer.toString(id);
+		return format(bytelength, input);
+	}
+
+}

src/com/rhizome/example/util/DbUtil.java

@@ -44,17 +44,10 @@ public class DbUtil {
 	 * 				  生成されたConnectionを返却する
 	 * 				  ※Connection生成には上記の定数を活用してください
 	 */
-
+	public static Connection getConnection() throws ClassNotFoundException, SQLException {
-	public static Connection getConnection()
-			throws ClassNotFoundException, SQLException {
-
 		Class.forName(DB_DRIVER);
-
+		// Connection : not null && 接続状態 → フィールドを戻す
-		con = DriverManager.getConnection(
+		if( !((con!=null)&&(con.isValid(1))) ) con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
-				DB_URL,
-				DB_USER,
-				DB_PASS);
-
 		return con;
 	}
 
@@ -67,13 +60,8 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のDBステートメントがnullでない場合、そのDBステートメントをクローズする
 	 */
-
+	public static void closeStatement(PreparedStatement stmt) throws SQLException {
-	public static void closeStatement(PreparedStatement stmt)
+		if (stmt!=null) stmt.close();
-			throws SQLException {
-
-		if (stmt != null) {
-			stmt.close();
-		}
 	}
 
 
@@ -86,12 +74,9 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のコネクションがnullでない場合、そのコネクションを切断する
 	 */
-
+	public static void closeConnection(Connection con) throws SQLException {
-	public static void closeConnection(Connection con)
+		if (con!=null) con.close();
-			throws SQLException {
-
-		if (con != null) {
-			con.close();
-		}
 	}
+
+
 }