10/30 9-1まで完了

.classpath

@@ -1,10 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
-		<attributes>
-			<attribute name="module" value="true"/>
-		</attributes>
-	</classpathentry>
+	<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="実行例/DAO_Simple.jar"/>

.project

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

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

@@ -0,0 +1,243 @@
+/*
+ * EmployeeDAO.java
+ *   作成	IT-College	2020
+ *------------------------------------------------------------
+ * Copyright(c) Rhizome Inc. All Rights Reserved.
+ */
+package com.rhizome.example.dao;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.rhizome.example.dto.DepartmentDTO;
+import com.rhizome.example.util.DbUtil;
+
+public class DepartmentDAO {
+	private static final String TBL_NAME = "department";
+	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;
+	/** DBステートメント */
+	PreparedStatement stmt;
+	/** 検索結果 */
+	ResultSet rs;
+
+	/**
+	 * インスタンス生成時DBコネクション
+	 *
+	 * @throws ClassNotFoundException
+	 * @throws SQLException
+	 */
+	public DepartmentDAO(Connection con) {
+		this.con = con;
+	}
+
+	/**
+	 * 社員テーブルの情報を全件取得する
+	 *
+	 * @return 検索結果
+	 * @throws SQLException
+	 * @throws ClassNotFoundException
+	 */
+	public List<DepartmentDTO> selectAll() throws SQLException, ClassNotFoundException {
+		List<DepartmentDTO> rtnList = new ArrayList<>();
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append("    " + "*");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		try {
+
+			this.stmt = con.prepareStatement(sql.toString());
+			rs = stmt.executeQuery();
+			while (rs.next()) {
+				DepartmentDTO dto = new DepartmentDTO();
+
+				dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+				dto.setNmDepartment(rs.getString(NM_DEPARTMENT));
+				rtnList.add(dto);
+			}
+		} finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
+	}
+
+	//部署ID検索
+	public List<DepartmentDTO> selectById(int id) 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 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 + " = ?");
+
+		try {
+			//PreparedStatement生成
+			stmt = con.prepareStatement(sql.toString());
+			//値設定
+			stmt.setInt(1, id);
+			//SQL実行
+			stmt.executeUpdate();
+
+		} finally {
+
+			DbUtil.closeStatement(stmt);
+		}
+	}
+
+	//部署情報登録
+	public void deptInsert(
+			String departmentName)
+					throws SQLException {
+		//SQL作成
+		StringBuilder sql = new StringBuilder();
+
+		sql.append(" INSERT INTO department ");
+		sql.append(" ( ");
+		sql.append(" nm_department ");
+		sql.append(" ) ");
+		sql.append(" VALUES ");
+		sql.append(" (?) ");
+
+		try {
+
+			//PreparedStatement生成
+			stmt = con.prepareStatement(sql.toString());
+			//値設定
+			stmt.setString(1, departmentName);
+			//SQL実行
+			stmt.executeUpdate();
+
+		} finally {
+
+			DbUtil.closeStatement(stmt);
+		}
+	}
+
+	//部署情報更新
+	public void deptUpdate(
+			int id,
+			String departmentName)
+					throws SQLException {
+
+		//SQL作成
+		StringBuilder sql = new StringBuilder();
+
+		sql.append(" UPDATE department ");
+		sql.append(" SET ");
+		sql.append(" nm_department = ? ");
+		sql.append(" WHERE id_department = ? ");
+
+		try {
+
+			//PreparedStatement生成
+			stmt = con.prepareStatement(sql.toString());
+			//値設定
+			stmt.setString(1, departmentName);
+			stmt.setInt(2, id);
+
+			//SQL実行
+			stmt.executeUpdate();
+
+		} finally {
+
+			//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

@@ -7,25 +7,32 @@
 package com.rhizome.example.dao;
 
 import java.sql.Connection;
-import java.sql.DriverManager;
+import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.List;
 
 import com.rhizome.example.dto.EmployeeDTO;
-//import com.rhizome.example.main.EmployeeDTO;
-//実行結果をDTOに格納し、リストに追加
+import com.rhizome.example.util.DbUtil;
 
 public class EmployeeDAO {
+	private static final String TBL_NAME = "employee";
+	private static final String ID_EMPLOYEE = "id_employee";
+	private static final String NM_EMPLOYEE = "nm_employee";
+	private static final String KN_EMPLOYEE = "kn_employee";
+	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;
+	public Connection con;
 	/** DBステートメント */
-	//PreparedStatement stmt;
+	PreparedStatement stmt;
 	/** 検索結果 */
-	//ResultSet rs;
+	ResultSet rs;
 
 	/**
 	 * インスタンス生成時DBコネクション
@@ -33,9 +40,9 @@ public class EmployeeDAO {
 	 * @throws ClassNotFoundException
 	 * @throws SQLException
 	 */
-	//public EmployeeDAO(Connection con) {
-		//this.con = con;
-	//}
+	public EmployeeDAO(Connection con) {
+		this.con = con;
+	}
 
 	/**
 	 * 社員テーブルの情報を全件取得する
@@ -46,116 +53,404 @@ public class EmployeeDAO {
 	 */
 	public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
 		List<EmployeeDTO> rtnList = new ArrayList<>();
-		
-		Connection con = null;
-        Statement stmt = null;
-        
-		
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append(" employee.id_employee ");
+		sql.append(" ,employee.nm_employee ");
+		sql.append(" ,employee.kn_employee ");
+		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 {
-            // JDBCドライバの読み込み
-            Class.forName("com.mysql.cj.jdbc.Driver");
 
-            // Connectionの生成 
-            con = DriverManager.getConnection(
-                "jdbc:mysql://127.0.0.1:3306/rezodb", // データベース
-                "rezouser",                           // ユーザ名
-                "Rezo_0000"                           // パスワード
-            );
-            
-            String sql = "SELECT * FROM employee";
-            stmt = con.createStatement();
-            ResultSet rs = stmt.executeQuery(sql);
-
-            // 実行結果をDTOに格納し、リストに追加
+			this.stmt = con.prepareStatement(sql.toString());
+			rs = stmt.executeQuery();
 			while (rs.next()) {
-				EmployeeDTO emp = new EmployeeDTO();
+				EmployeeDTO dto = new EmployeeDTO();
 
-				emp.setId_employee(rs.getInt("id_employee"));
-				emp.setNm_employee(rs.getString("nm_employee"));
-				emp.setKn_employee(rs.getString("kn_employee"));
-				emp.setMail_address(rs.getString("mail_address"));
-				emp.setPassword(rs.getString("password"));
-				emp.setId_department(rs.getInt("id_department"));
-
-				rtnList.add(emp);
+				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);
 			}
-			
-		} catch (ClassNotFoundException | SQLException e) {
-            e.printStackTrace();
 		} finally {
-            // Statement、Connectionの切断
-            try {
-                if (stmt != null) stmt.close();
-                if (con != null) con.close();
-            } catch (SQLException e) {
-                e.printStackTrace();
-            }
+			DbUtil.closeStatement(this.stmt);
 		}
 		return rtnList;
 	}
 
-	//IDによる条件検索
-	public java.util.List<EmployeeDTO> selectById​(int id) throws SQLException, ClassNotFoundException, NumberFormatException{
+	//社員ID検索
+	public List<EmployeeDTO> selectById(int id) throws SQLException {
+		//戻り値用リスト
 		List<EmployeeDTO> rtnList = new ArrayList<>();
-		
-		Connection con = null;
-        Statement stmt = null;
+		//SQL作成
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append(" employee.id_employee ");
+		sql.append(" ,employee.nm_employee ");
+		sql.append(" ,employee.kn_employee ");
+		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 ");
+		sql.append(" WHERE employee.id_employee = ? ");
 
 		try {
-            // JDBCドライバの読み込み
-            Class.forName("com.mysql.cj.jdbc.Driver");
-
-            // Connectionの生成 
-            con = DriverManager.getConnection(
-                "jdbc:mysql://127.0.0.1:3306/rezodb", // データベース
-                "rezouser",                           // ユーザ名
-                "Rezo_0000"                           // パスワード
-            );
-            
-            String sql = "SELECT id_employee FROM employee WHERE id_employee";
-            stmt = con.createStatement();
-            ResultSet rs = stmt.executeQuery(sql);
-            
-         // 実行結果をDTOに格納し、リストに追加
+			//PreparedStatement生成
+			stmt = con.prepareStatement(sql.toString());
+			//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
 			while (rs.next()) {
-         				EmployeeDTO emp = new EmployeeDTO();
+				//DTO生成
+				EmployeeDTO dto = new EmployeeDTO();
+				//検索結果をDTOへセット
+				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));
 
-         				emp.setId_employee(rs.getInt("id_employee"));
-         				emp.setNm_employee(rs.getString("nm_employee"));
-         				emp.setKn_employee(rs.getString("kn_employee"));
-         				emp.setMail_address(rs.getString("mail_address"));
-         				emp.setPassword(rs.getString("password"));
-         				emp.setId_department(rs.getInt("id_department"));
-
-         				rtnList.add(emp);
+				//リストへ追加
+				rtnList.add(dto);
 			}
 
-         			List<EmployeeDTO> selectList = new ArrayList<>();
-
-         			for (EmployeeDTO employee : rtnList) {
-         				if (employee.getPrimaryKeyValue().equals(id)) {
-         					selectList.add(employee);
-         				}
-         			}
-
-         			return selectList;
-            
-         			
-         			
-        } catch (ClassNotFoundException | SQLException e) {
-        e.printStackTrace();
 		} finally {
-        // Statement、Connectionの切断
-        	try {
-        		if (stmt != null) stmt.close();
-        		if (con != null) con.close();
-        	} catch (SQLException e) {
-        		e.printStackTrace();
-        	}
+
+			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 {
+	    //戻り値用リスト
+	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	    //SQL作成
+	    StringBuilder sql = new StringBuilder();
+
+	    sql.append(" SELECT ");
+	    sql.append(" employee.id_employee ");
+	    sql.append(" ,employee.nm_employee ");
+	    sql.append(" ,employee.kn_employee ");
+	    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 ");
+	    sql.append(" WHERE employee.nm_employee = ? ");
+
+	    try {
+
+	        //PreparedStatement生成
+	        stmt = con.prepareStatement(sql.toString());
+
+	        //社員名を設定
+	        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
+	            EmployeeDTO dto = new EmployeeDTO();
+
+	            //検索結果をDTOへセット
+	            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));
+
+	            //リストへ追加
+	            rtnList.add(dto);
 	        }
 
+	    } finally {
 
+	        DbUtil.closeStatement(stmt);
+	    }
+
+	    //検索結果を返却
+	    return rtnList;
+	}
+	
+	//フリガナ検索
+	public List<EmployeeDTO> selectByKana(String kana) throws SQLException {
+	    //戻り値用リスト
+	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	    //SQL作成
+	    StringBuilder sql = new StringBuilder();
+
+	    sql.append(" SELECT ");
+	    sql.append(" employee.id_employee ");
+	    sql.append(" ,employee.nm_employee ");
+	    sql.append(" ,employee.kn_employee ");
+	    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 ");
+	    sql.append(" WHERE employee.kn_employee = ? ");
+
+	    try {
+	        //PreparedStatement生成
+	        stmt = con.prepareStatement(sql.toString());
+	        //フリガナ設定
+	        stmt.setString(1, kana);
+	        //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 {
+	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	    StringBuilder sql = new StringBuilder();
+
+	    sql.append(" SELECT ");
+	    sql.append(" employee.id_employee ");
+	    sql.append(" ,employee.nm_employee ");
+	    sql.append(" ,employee.kn_employee ");
+	    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 ");
+	    sql.append(" WHERE employee.mail_address = ? ");
+
+	    try {
+
+	        stmt = con.prepareStatement(sql.toString());
+	        stmt.setString(1, mail);
+	        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;
+	}
+	
+	//部署名検索
+
+	public List<EmployeeDTO> selectByDepartment(String department) throws SQLException {
+	    List<EmployeeDTO> rtnList = new ArrayList<>();
+	    StringBuilder sql = new StringBuilder();
+
+	    sql.append(" SELECT ");
+	    sql.append(" employee.id_employee ");
+	    sql.append(" ,employee.nm_employee ");
+	    sql.append(" ,employee.kn_employee ");
+	    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 ");
+	    sql.append(" WHERE department.nm_department = ? ");
+
+	    try {
+
+	        stmt = con.prepareStatement(sql.toString());
+	        stmt.setString(1, department);
+	        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;
+	}
+	
+	//社員情報削除
+	public void empDelete(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_EMPLOYEE + " = ?");
+
+	    try {
+	        //PreparedStatement生成
+	        stmt = con.prepareStatement(sql.toString());
+	        //値設定
+	        stmt.setInt(1, id);
+	        //SQL実行
+	        stmt.executeUpdate();
+
+	    } finally {
+
+	        DbUtil.closeStatement(stmt);
+	    }
+	}
+	
+	//社員情報登録
+	public void empInsert(
+	        String name,
+	        String kana,
+	        String mail,
+	        String password,
+	        int departmentId)
+	        throws SQLException {
+	    //SQL作成
+	    StringBuilder sql = new StringBuilder();
+
+	    sql.append(" INSERT INTO employee ");
+	    sql.append(" ( ");
+	    sql.append(" nm_employee, ");
+	    sql.append(" kn_employee, ");
+	    sql.append(" mail_address, ");
+	    sql.append(" password, ");
+	    sql.append(" id_department ");
+	    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

@@ -0,0 +1,23 @@
+package com.rhizome.example.dto;
+
+public class DepartmentDTO {
+
+	private Integer idDepartment;
+	private String nmDepartment;
+
+	public Integer getIdDepartment() {
+		return idDepartment;
+	}
+
+	public void setIdDepartment(Integer idDepartment) {
+		this.idDepartment = idDepartment;
+	}
+
+	public String getNmDepartment() {
+		return nmDepartment;
+	}
+
+	public void setNmDepartment(String nmDepartment) {
+		this.nmDepartment = nmDepartment;
+	}
+}

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

@@ -2,38 +2,38 @@ package com.rhizome.example.dto;
 
 public class EmployeeDTO {
 
-	//Employeeテーブルのカラム分のフィールド
-	private Integer id_employee;
-	private String nm_employee;
-	private String kn_employee;
-	private String mail_address;
+	private Integer idEmployee;
+	private String nmEmployee;
+	private String knEmployee;
+	private String mailAddress;
 	private String password;
-	private Integer id_department;
+	private Integer idDepartment;
+	private String nmDepartment;
 
 
-	public Integer getId_employee() {
-		return id_employee;
+	public Integer getIdEmployee() {
+		return idEmployee;
 	}
-	public void setId_employee(Integer id_employee) {
-		this.id_employee = id_employee;
+	public void setIdEmployee(Integer idEmployee) {
+		this.idEmployee = idEmployee;
 	}
-	public String getNm_employee() {
-		return nm_employee;
+	public String getNmEmployee() {
+		return nmEmployee;
 	}
-	public void setNm_employee(String nm_employee) {
-		this.nm_employee = nm_employee;
+	public void setNmEmployee(String nmEmployee) {
+		this.nmEmployee = nmEmployee;
 	}
-	public String getKn_employee() {
-		return kn_employee;
+	public String getKnEmployee() {
+		return knEmployee;
 	}
-	public void setKn_employee(String kn_employee) {
-		this.kn_employee = kn_employee;
+	public void setKnEmployee(String knEmployee) {
+		this.knEmployee = knEmployee;
 	}
-	public String getMail_address() {
-		return mail_address;
+	public String getMailAddress() {
+		return mailAddress;
 	}
-	public void setMail_address(String mail_address) {
-		this.mail_address = mail_address;
+	public void setMailAddress(String mailAddress) {
+		this.mailAddress = mailAddress;
 	}
 	public String getPassword() {
 		return password;
@@ -41,20 +41,19 @@ public class EmployeeDTO {
 	public void setPassword(String password) {
 		this.password = password;
 	}
-	public Integer getId_department() {
-		return id_department;
+	public Integer getIdDepartment() {
+		return idDepartment;
 	}
-	public void setId_department(Integer id_department) {
-		this.id_department = id_department;
-	}
-	public Object getPrimaryKeyValue() {
-		// TODO 自動生成されたメソッド・スタブ
-		return null;
+	public void setIdDepartment(Integer idDepartment) {
+		this.idDepartment = idDepartment;
 	}
 	
+	public String getNmDepartment() {
+	    return nmDepartment;
+	}
 	
-	
-	
-	
+	public void setNmDepartment(String nmDepartment) {
+	    this.nmDepartment = nmDepartment;
+	}
 
 }

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

@@ -6,7 +6,9 @@ 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;
 
@@ -51,15 +53,51 @@ public class Main {
 		String ope = sc.nextLine();
 		switch (ope) {
 		case "1":
+			//社員テーブル
+			if (tblFlg == 0) {
 				empSelect();
+
+				//部署テーブル
+			} else {
+				deptSelect();
+			}
 			break;
 		case "2":
+			//社員テーブル
+			if (tblFlg == 0) {
+				empInsert();
+
+				//部署テーブル
+			} else {
+				deptInsert();
+			}
 			break;
 		case "3":
+			//社員テーブル
+			if (tblFlg == 0) {
+				empUpdate();
+
+				//部署テーブル
+			} else {
+				deptUpdate();
+			}
 			break;
 		case "4":
+			//社員テーブル
+			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");
@@ -79,7 +117,7 @@ public class Main {
 	public static void empSelect() throws ClassNotFoundException, SQLException {
 		List<EmployeeDTO> empList = new ArrayList<>();
 		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO();
+		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 {
@@ -87,26 +125,137 @@ public class Main {
 			case "1":
 				empList = empDao.selectAll();
 				break;
+
 			case "2":
-				String id = sc.nextLine();//IDを入力
-				int num = Integer.valueOf(id);//String型のIDをint型に変換
-				empList = empDao.selectById​(num);
+			    //検索項目選択
+				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");
+			    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.getId_employee() + "\t" 
-                        + emp.getNm_employee() + "\t" 
-                        + emp.getKn_employee() + "\t"
-                        + emp.getMail_address() + "\t" 
-                        + emp.getPassword() + "\t" 
-                        + emp.getId_department());
+
+				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();
+			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
@@ -133,9 +282,6 @@ public class Main {
 	 * @param flg
 	 *            数値チェック可否フラグ
 	 * @return
-	 * @throws SQLException 
-	 * @throws ClassNotFoundException 
-	 * @throws NumberFormatException 
 	 */
 	public static String inputCheck(String titleName, boolean flg) {
 		String str = null;
@@ -155,11 +301,406 @@ public class Main {
 						continue;
 					}
 				}
-				
 			}
-		
 			break;
 		}
 		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/util/DbUtil.java

@@ -5,7 +5,6 @@ import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
 
-
 public class DbUtil {
 	// 定数定義（共通）
 	private static final String DB_HOST = "127.0.0.1";
@@ -45,27 +44,20 @@ 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
 	 */
-	//DB接続用メソッドを作成する
-	public static Connection getConnection() throws ClassNotFoundException {
-			//データベースの接続オブジェクトを初期化
-			Connection con = null;
-            // JDBCドライバの読み込み
-            Class.forName("com.mysql.cj.jdbc.Driver");
 
-            // Connectionの生成
-            try {
+	public static Connection getConnection()
+			throws ClassNotFoundException, SQLException {
+
+		Class.forName(DB_DRIVER);
+
 		con = DriverManager.getConnection(
-				    "jdbc:mysql://127.0.0.1:3306/rezodb" // データベース
-				    , "rezouser" // ユーザ
-				    , "Rezo_0000" // パスワード
-				);
-			} catch (SQLException e) {
-                e.printStackTrace();
-            }
+				DB_URL,
+				DB_USER,
+				DB_PASS);
+
 		return con;
 	}
 
-
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
 	 *
@@ -75,15 +67,15 @@ 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 = null;
-		try {
-            if (stmt != null) stmt.close();
-        } catch (SQLException e) {
-            e.printStackTrace();
+
+	public static void closeStatement(PreparedStatement stmt)
+			throws SQLException {
+
+		if (stmt != null) {
+			stmt.close();
+		}
 	}
 
-	}
 
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
@@ -94,12 +86,12 @@ 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() {
-		try {
-            if (con != null) con.close();
-        } catch (SQLException e) {
-            e.printStackTrace();
-        }
-	}
 
+	public static void closeConnection(Connection con)
+			throws SQLException {
+
+		if (con != null) {
+			con.close();
+		}
+	}
 }