10/20_9段階完了

misson1014/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

misson1014/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>misson1014</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

misson1014/.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding/<project>=UTF-8

misson1014/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=21
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

misson1014/src/misson1014/BaseData.java

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+package misson1014;
+
+public abstract class BaseData {
+
+    public abstract String toString();
+
+    public abstract String toCSV();
+
+    public abstract String getPrimaryKeyValue();
+}

misson1014/src/misson1014/BasicCheck1.java

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+package misson1014;
+
+public class BasicCheck1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+	       //コンストラクタ
+        Book book1 = new Book();
+
+        //book1
+        System.out.println(book1.title);
+        System.out.println(book1.author);
+        System.out.println(book1.price);
+
+        //コンストラクタ
+        Book book2 = new Book(
+                "銀河鉄道の夜",
+                "宮沢賢治",
+                500);
+
+        //book2
+        System.out.println(book2.title);
+        System.out.println(book2.author);
+        System.out.println(book2.price);
+
+    }
+}

misson1014/src/misson1014/BasicCheck2.java

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+package misson1014;
+
+public class BasicCheck2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        Student student1 = new Student(1, "鈴木一郎");
+        Student student2 = new Student(2, "田中花子");
+        Student student3 = new Student(3, "佐藤次郎");
+
+        // 学生情報表示
+        student1.printProfile();
+        student2.printProfile();
+        student3.printProfile();
+
+        // 現在の学生数表示
+        System.out.println(
+                "現在の生徒数:"
+                + Student.getStudentCount()
+                + "人");
+    }
+
+}

misson1014/src/misson1014/BasicCheck3.java

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+package misson1014;
+
+public class BasicCheck3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		// Item型の配列を作成
+		Item[] items = new Item[3];
+
+		//インスタンス生成
+		items[0] = new Item();
+		items[1] = new Item();
+		items[2] = new Item();
+
+		items[0].setName("ノート");
+		items[0].setPrice(120);
+		items[0].setStock(50);
+
+		items[1].setName("消しゴム");
+		items[1].setPrice(80);
+		items[1].setStock(30);
+
+		items[2].setName("鉛筆");
+		items[2].setPrice(60);
+		items[2].setStock(100);
+
+		//販売
+		for (int i = 0; i < items.length; i++) {
+			items[i].sell(5);
+		}
+		//商品情報表示
+		for (int i = 0; i < items.length; i++) {
+			System.out.println(items[i]);
+		}
+
+	}
+}

misson1014/src/misson1014/Book.java

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+package misson1014;
+
+public class Book {
+    // タイトル
+    String title;
+    // 著者
+    String author;
+    // 価格
+    int price;
+    
+    //コンストラクタ
+    public Book() {
+
+        this.title = "タイトル未設定";
+        this.author = "著者未設定";
+        this.price = 0;
+    }
+
+    //コンストラクタ
+    public Book(String title, String author, int price) {
+
+        //フィールド代入
+        this.title = title;
+        this.author = author;
+        this.price = price;
+
+    }
+}

misson1014/src/misson1014/Circle.java

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+package misson1014;
+
+public class Circle extends Shape {
+
+	private double radius;
+
+	public Circle(double radius) {
+
+		super("円");
+
+		this.radius = radius;
+	}
+
+	@Override
+	public double area() {
+		return Math.PI * this.radius * this.radius;
+	}
+
+	@Override
+	public void showInfo() {
+		super.showInfo();
+		System.out.println("(半径:" + this.radius + ")");
+	}
+}

misson1014/src/misson1014/Day3Check1.java

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+package misson1014;
+
+public class Day3Check1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        Circle circle = new Circle(2);
+
+        circle.showInfo();
+    }
+}

misson1014/src/misson1014/DepartmentData.java

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+package misson1014;
+
+public class DepartmentData extends BaseData {
+
+	private String idDepartment;
+	private String nmDepartment;
+
+	public String getIdDepartment() {
+		return idDepartment;
+	}
+
+	public void setIdDepartment(String idDepartment) {
+		this.idDepartment = idDepartment;
+	}
+
+	public String getNmDepartment() {
+		return nmDepartment;
+	}
+
+	public void setNmDepartment(String nmDepartment) {
+		this.nmDepartment = nmDepartment;
+	}
+
+	@Override
+	public String toString() {
+		return getIdDepartment() + "\t" + getNmDepartment();
+	}
+
+	@Override
+	public String toCSV() {
+		return getIdDepartment() + "," + getNmDepartment();
+	}
+
+	@Override
+	public String getPrimaryKeyValue() {
+		return getIdDepartment();
+	}
+}

misson1014/src/misson1014/EmployeeData.java

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+package misson1014;
+
+public class EmployeeData extends BaseData {
+	//社員ID
+	private String idEmployee;
+	//社員名
+	private String nmEmployee;
+	//社員名カナ
+	private String knEmployee;
+	//メールアドレス
+	private String mailAddress;
+	//パスワード
+	private String password;
+	//部署ID
+	private String idDepartment;
+	//社員データ件数
+	private static int empCount = 0;
+	//コンストラクタ
+	public EmployeeData() {
+		empCount++;
+	}
+	//コンストラクタ
+	public EmployeeData(
+			String idEmployee,
+			String nmEmployee,
+			String knEmployee,
+			String mailAddress,
+			String password,
+			String idDepartment) {
+
+		this.setIdEmployee(idEmployee);
+		this.setNmEmployee(nmEmployee);
+		this.setKnEmployee(knEmployee);
+		this.setMailAddress(mailAddress);
+		this.setPassword(password);
+		this.setIdDepartment(idDepartment);
+
+		empCount++;
+	}
+
+	//ゲッター
+	public String getIdEmployee() {
+		return idEmployee;
+	}
+	public String getNmEmployee() {
+		return nmEmployee;
+	}
+	public String getKnEmployee() {
+		return knEmployee;
+	}
+	public String getMailAddress() {
+		return mailAddress;
+	}
+	public String getPassword() {
+		return password;
+	}
+	public String getIdDepartment() {
+		return idDepartment;
+	}
+	//セッター
+	public void setIdEmployee(String idEmployee) {
+
+		if (idEmployee == null) {
+			System.out.println("社員IDが空のため設定できませんでした");
+			return;
+		}
+
+		if (idEmployee.trim().isEmpty()) {
+			System.out.println("社員IDが空のため設定できませんでした");
+			return;
+		}
+
+		this.idEmployee = idEmployee;
+	}
+
+	public void setNmEmployee(String nmEmployee) {
+
+		if (nmEmployee == null) {
+			System.out.println("社員名が空のため設定できませんでした");
+			return;
+		}
+
+		if (nmEmployee.trim().isEmpty()) {
+			System.out.println("社員名が空のため設定できませんでした");
+			return;
+		}
+
+		this.nmEmployee = nmEmployee;
+	}
+
+	public void setKnEmployee(String knEmployee) {
+		this.knEmployee = knEmployee;
+	}
+
+	public void setMailAddress(String mailAddress) {
+		this.mailAddress = mailAddress;
+	}
+
+	public void setPassword(String password) {
+		this.password = password;
+	}
+
+	public void setIdDepartment(String idDepartment) {
+		this.idDepartment = idDepartment;
+	}
+
+	//toString
+	@Override
+	public String toString() {
+
+		return getIdEmployee() + "\t"
+				+ getNmEmployee() + "\t"
+				+ getKnEmployee() + "\t"
+				+ getMailAddress() + "\t"
+				+ getPassword() + "\t"
+				+ getIdDepartment();
+	}
+
+	//CSV形式へ変換
+	@Override
+	public String toCSV() {
+
+		return getIdEmployee() + ","
+				+ getNmEmployee() + ","
+				+ getKnEmployee() + ","
+				+ getMailAddress() + ","
+				+ getPassword() + ","
+				+ getIdDepartment();
+	}
+
+	//キー取得
+	@Override
+	public String getPrimaryKeyValue() {
+
+		return getIdEmployee();
+	}
+
+	//ID一致判定
+	public boolean isMatchId(String id) {
+		return getIdEmployee().equals(id);
+	}
+
+	//件数取得
+	public static int getEmpCount() {
+		return empCount;
+	}
+}

misson1014/src/misson1014/Item.java

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+package misson1014;
+
+public class Item {
+	private String name;
+	private int price;
+	private int stock;
+
+	//商品
+	public void sell(int amount) {
+		//在庫減らし
+		this.setStock(this.getStock() - amount);
+	}
+
+	//商品名ゲッター
+	public String getName() {
+		return name;
+	}
+	//商品名セッター
+	public void setName(String name) {
+		this.name = name;
+	}
+	//価格ゲッター
+	public int getPrice() {
+		return price;
+	}
+	//価格セッター
+	public void setPrice(int price) {
+		this.price = price;
+	}
+	//在庫数ゲッター
+	public int getStock() {
+		return stock;
+	}
+	//在庫数セッター
+	public void setStock(int stock) {
+		this.stock = stock;
+	}
+
+	@Override
+	public String toString() {
+
+		return getName()
+				+ " "
+				+ getPrice()
+				+ "円 (残り"
+				+ getStock()
+				+ "個)";
+
+	}
+
+
+}

misson1014/src/misson1014/Main.java

@@ -0,0 +1,241 @@
+package misson1014;
+import java.util.Scanner;
+
+public class Main {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		//社員データ格納用配列作成
+		//EmployeeDataをBaseDataとして管理する
+		//（ポリモーフィズム）
+		BaseData[] employees = new BaseData[5];
+
+		//社員データ用インスタンス
+		employees[0] = new EmployeeData();
+		employees[1] = new EmployeeData();
+		employees[2] = new EmployeeData();
+		employees[3] = new EmployeeData();
+		employees[4] = new EmployeeData();
+		employees[0] = new EmployeeData();
+		employees[1] = new EmployeeData();
+		employees[2] = new EmployeeData();
+		employees[3] = new EmployeeData();
+		employees[4] = new EmployeeData();
+
+		//社員情報設定
+		//BaseData型なのでEmployeeDataへ
+		//キャストしてセッターを利用する
+		((EmployeeData) employees[0]).setIdEmployee("10000");
+		((EmployeeData) employees[0]).setNmEmployee("山田龍也");
+		((EmployeeData) employees[0]).setKnEmployee("ヤマダタツヤ");
+		((EmployeeData) employees[0]).setMailAddress("yamada@hoge.jp");
+		((EmployeeData) employees[0]).setPassword("aaa");
+		((EmployeeData) employees[0]).setIdDepartment("10");
+
+		((EmployeeData) employees[1]).setIdEmployee("10001");
+		((EmployeeData) employees[1]).setNmEmployee("高橋準");
+		((EmployeeData) employees[1]).setKnEmployee("タカハシジュン");
+		((EmployeeData) employees[1]).setMailAddress("jtaka@hoge.jp");
+		((EmployeeData) employees[1]).setPassword("bbb");
+		((EmployeeData) employees[1]).setIdDepartment("10");
+
+		((EmployeeData) employees[2]).setIdEmployee("10002");
+		((EmployeeData) employees[2]).setNmEmployee("麻枝史明");
+		((EmployeeData) employees[2]).setKnEmployee("マエダフミアキ");
+		((EmployeeData) employees[2]).setMailAddress("fmak@hoge.jp");
+		((EmployeeData) employees[2]).setPassword("ccc");
+		((EmployeeData) employees[2]).setIdDepartment("11");
+
+		((EmployeeData) employees[3]).setIdEmployee("10003");
+		((EmployeeData) employees[3]).setNmEmployee("丸戸章介");
+		((EmployeeData) employees[3]).setKnEmployee("マルトショウスケ");
+		((EmployeeData) employees[3]).setMailAddress("marusyo@hoge.jp");
+		((EmployeeData) employees[3]).setPassword("ddd");
+		((EmployeeData) employees[3]).setIdDepartment("12");
+
+		((EmployeeData) employees[4]).setIdEmployee("10004");
+		((EmployeeData) employees[4]).setNmEmployee("三宅武");
+		((EmployeeData) employees[4]).setKnEmployee("ミヤケタケシ");
+		((EmployeeData) employees[4]).setMailAddress("miya@hoge.jp");
+		((EmployeeData) employees[4]).setPassword("eee");
+		((EmployeeData) employees[4]).setIdDepartment("13");
+
+		//6段階目
+		//EmployeeDataとDepartmentDataを同じBaseData配列で管理する
+		//全データ格納用
+		BaseData[] allData = new BaseData[11];
+
+		//社員データをallDataへ格納
+		for (int i = 0; i < employees.length; i++) {
+			allData[i] = employees[i];
+		}
+
+		//部署データ作成
+		//先にDepartmentData型で生成
+		//値を設定後にallDataへ格納する
+		DepartmentData dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("10");
+		dept.setNmDepartment("役員");
+		allData[5] = dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("11");
+		dept.setNmDepartment("人事・総務部");
+		allData[6] = dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("12");
+		dept.setNmDepartment("経理部");
+		allData[7] = dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("13");
+		dept.setNmDepartment("システム開発事業部");
+		allData[8] = dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("14");
+		dept.setNmDepartment("教育事業部");
+		allData[9] = dept;
+
+		dept = new DepartmentData();
+		dept.setIdDepartment("15");
+		dept.setNmDepartment("営業企画部");
+		allData[10] = dept;
+
+		//BaseData配列を全件表示
+		//EmployeeDataとDepartmentDataでオーバーライドされたtoString()が実行
+		for (int i = 0; i < allData.length; i++) {
+			System.out.println(allData[i]);
+		}
+
+		//7段階目
+		//instanceofを使って型を判定
+		//EmployeeData件数とDepartmentData件数を集計
+		int employeeCount = 0;
+		int departmentCount = 0;
+
+		for (int i = 0; i < allData.length; i++) {
+
+			if (allData[i] instanceof EmployeeData) {
+				employeeCount++;
+			}
+
+			if (allData[i] instanceof DepartmentData) {
+				departmentCount++;
+			}
+		}
+
+		//集計結果表示
+		System.out.println("社員データ:" + employeeCount + "件");
+		System.out.println("部署データ:" + departmentCount + "件");
+
+
+		//8段階目
+		//EmployeeDataへキャストしてメールアドレスを取得する
+		for (int i = 0; i < allData.length; i++) {
+
+			if (allData[i] instanceof EmployeeData) {
+
+				EmployeeData employee = (EmployeeData) allData[i];
+
+				System.out.println(
+						employee.getMailAddress()
+						);
+			}
+		}
+
+		Scanner scanner = new Scanner(System.in);
+
+		//9段階目
+		//入力した部署名に所属する社員を検索
+		//部署名から部署IDを取得
+		//部署IDと一致する社員を検索
+		//社員名とメールアドレスを表示
+
+		System.out.println("検索したい部署名を入力してください");
+		String departmentName = scanner.nextLine();
+
+		//該当部署の部署ID
+		String targetDepartmentId = null;
+
+		//部署見つかったか
+		boolean departmentFound = false;
+
+		//部署検索
+		for (int i = 0; i < allData.length; i++) {
+
+			if (allData[i] instanceof DepartmentData) {
+				DepartmentData department =(DepartmentData) allData[i];
+				if (department.getNmDepartment().equals(departmentName)) {
+					targetDepartmentId = department.getIdDepartment();
+					departmentFound = true;
+
+					break;
+				}
+			}
+		}
+
+		//部署が存在した場合
+		if (departmentFound) {
+
+			System.out.println("所属社員一覧");
+			for (int i = 0; i < allData.length; i++) {
+				if (allData[i] instanceof EmployeeData) {
+					EmployeeData employee =(EmployeeData) allData[i];
+					if (employee.getIdDepartment().equals(targetDepartmentId)) {
+						System.out.println(employee.getNmEmployee()
+								+ "\t"
+								+ employee.getMailAddress()
+								);
+					}
+				}
+			}
+
+		} else {
+
+			System.out.println(
+					"該当する部署が見つかりませんでした");
+
+		}
+
+
+
+		//三日目4段階目用
+		//System.out.println(employees[0].toCSV());
+		//System.out.println(employees[0].getPrimaryKeyValue());
+
+		//検索機能
+		//ループ
+		while (true) {
+
+			System.out.println("検索したい社員IDを入力してください（終了する場合は0）");
+
+			String search = scanner.nextLine();
+
+			if (search.equals("0")) {
+				System.out.println("システムを終了します");
+				break;
+			}
+
+			boolean found = false;
+
+			//ID検索と比較
+			for (int i = 0; i < employees.length; i++) {
+				if (employees[i].getPrimaryKeyValue().equals(search)) {
+					System.out.println(employees[i]);
+					found = true;
+					break;
+				}
+			}
+			//該当なし
+			if (!found) {
+				System.out.println("該当する社員が見つかりませんでした");
+			}
+		}
+
+		scanner.close();
+	}
+}

misson1014/src/misson1014/Main1.java

@@ -0,0 +1,125 @@
+package misson1014;
+
+public class Main1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        //8段階目まで
+		
+        /*
+        EmployeeData[] employees = new EmployeeData[5];
+
+        employees[0] = new EmployeeData();
+        employees[1] = new EmployeeData();
+        employees[2] = new EmployeeData();
+        employees[3] = new EmployeeData();
+        employees[4] = new EmployeeData();
+
+        employees[0].setIdEmployee("10000");
+
+		8段階用
+        employees[0].setNmEmployee("");
+
+        employees[0].setKnEmployee("ヤマダタツヤ");
+        employees[0].setMailAddress("yamada@hoge.jp");
+        employees[0].setPassword("aaa");
+        employees[0].setIdDepartment("10");
+
+        employees[1].setIdEmployee("10001");
+        employees[1].setNmEmployee("高橋準");
+        employees[1].setKnEmployee("タカハシジュン");
+        employees[1].setMailAddress("jtaka@hoge.jp");
+        employees[1].setPassword("bbb");
+        employees[1].setIdDepartment("10");
+
+        employees[2].setIdEmployee("10002");
+        employees[2].setNmEmployee("麻枝史明");
+        employees[2].setKnEmployee("マエダフミアキ");
+        employees[2].setMailAddress("fmak@hoge.jp");
+        employees[2].setPassword("ccc");
+        employees[2].setIdDepartment("11");
+
+        employees[3].setIdEmployee("10003");
+        employees[3].setNmEmployee("丸戸章介");
+        employees[3].setKnEmployee("マルトショウスケ");
+        employees[3].setMailAddress("marusyo@hoge.jp");
+        employees[3].setPassword("ddd");
+        employees[3].setIdDepartment("12");
+
+        employees[4].setIdEmployee("10004");
+        employees[4].setNmEmployee("三宅武");
+        employees[4].setKnEmployee("ミヤケタケシ");
+        employees[4].setMailAddress("miya@hoge.jp");
+        employees[4].setPassword("eee");
+        employees[4].setIdDepartment("13");
+
+        for (int i = 0; i < employees.length; i++) {
+
+            System.out.println(employees[i]);
+
+        }
+
+        System.out.println(
+                "現在の社員データ件数:"
+                        + EmployeeData.getEmpCount()
+                        + "件");
+        */
+
+        /*ここから9段階↓
+		EmployeeData employee1 =
+				new EmployeeData(
+						"10000",
+						"",
+						"ヤマダタツヤ",
+						"yamada@hoge.jp",
+						"aaa",
+						"10"
+						);
+
+		EmployeeData employee2 =
+				new EmployeeData(
+						"",
+						"山田龍也",
+						"ヤマダタツヤ",
+						"yamada@hoge.jp",
+						"aaa",
+						"10"
+						);
+		*/
+		
+		//三日目５段階
+	       BaseData employee1 = new EmployeeData(
+	                        "10000",
+	                        "",
+	                        "ヤマダタツヤ",
+	                        "yamada@hoge.jp",
+	                        "aaa",
+	                        "10"
+	                );
+
+	        BaseData employee2 = new EmployeeData(
+	                        "",
+	                        "山田龍也",
+	                        "ヤマダタツヤ",
+	                        "yamada@hoge.jp",
+	                        "aaa",
+	                        "10"
+	                );
+
+	        System.out.println(employee1);
+
+	        System.out.println(employee1.toCSV());
+
+	        System.out.println(employee1.getPrimaryKeyValue());
+
+	        System.out.println(
+	                employee1.getPrimaryKeyValue().equals("10000")
+	        );
+
+	        System.out.println(
+	                employee2.getPrimaryKeyValue().equals("10000")
+	        );
+
+	}
+
+}

misson1014/src/misson1014/Shape.java

@@ -0,0 +1,17 @@
+package misson1014;
+
+public class Shape {
+    private String name;
+
+    public Shape(String name) {
+        this.name = name;
+    }
+
+    public double area() {
+        return 0.0;
+    }
+
+    public void showInfo() {
+        System.out.println(this.name + "の面積は" + this.area() + "です");
+    }
+}

misson1014/src/misson1014/Student.java

@@ -0,0 +1,31 @@
+package misson1014;
+
+public class Student {
+	int studentId;
+	String name;
+	//staticフィールド
+	static int studentCount = 0;
+
+	//コンストラクタ
+	public Student(int studentId, String name) {
+		//フィールド代入
+		this.studentId = studentId;
+		this.name = name;
+		studentCount++;
+	}
+
+	//学生情報
+	void printProfile() {
+
+		System.out.println(
+				"学籍番号:" + this.studentId
+				+ " 名前:" + this.name);
+	}
+
+	//現在の学生数用staticメソッド
+	public static int getStudentCount() {
+		return studentCount;
+
+	}
+
+}