3日目3段階目完了しました。

em-oop/src/BasicCheck1.java

@@ -3,17 +3,7 @@ public class BasicCheck1 {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
-		Book book = new Book();
-		book.title = "吾輩は猫である";
-		book.author = "夏目漱石";
-		book.price = 800;
-		System.out.println(book.title);
-		System.out.println(book.author);
-		System.out.println(book.price);
 
-		System.out.println();
-
-		//9/15段階１
 		Book book1 = new Book();
 		System.out.println(book1.title);
 		System.out.println(book1.author);
@@ -23,7 +13,5 @@ public class BasicCheck1 {
 		System.out.println(book2.title);
 		System.out.println(book2.author);
 		System.out.println(book2.price);
-
 	}
-
 }

em-oop/src/BasicCheck2.java

@@ -3,13 +3,19 @@ public class BasicCheck2 {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
+		
+		//コンストラクタを使ってインスタンスを作成
 		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");
+		
+		//メソッド呼び出し
 		student1.printProfile();
 		student2.printProfile();
 		student3.printProfile();
-		System.out.println("現在の生徒数:" + Student.getStudentCount() + "人");
+		
+		//クラスから直接呼び出し
+		System.out.println("現在の生徒数" +Student.getStudentCount() + "人");
 	}
 
 }

em-oop/src/BasicCheck3.java

@@ -3,24 +3,32 @@ 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[] items = new Item[3];
-		for (int i = 0; i < items.length; i++) {
+		
-			items[i] = new Item();
+		items[0] = new Item();
-		}
 		items[0].setName("ノート");
 		items[0].setPrice(120);
 		items[0].setStock(50);
+
+		items[1] = new Item();
 		items[1].setName("消しゴム");
 		items[1].setPrice(80);
 		items[1].setStock(30);
+
+		items[2] = new Item();
 		items[2].setName("鉛筆");
 		items[2].setPrice(60);
 		items[2].setStock(100);
 		
-		for (Item i : items) {
+		items[0].sell(5);
-			i.sell(5);
+		items[1].sell(5);
-			System.out.println(i);
+		items[2].sell(5);
-		}
+		
+		for(int i= 0;i<3;i++) {
+			System.out.println(items[i]);
+			
 		}
 		
 	}
+}

em-oop/src/Book.java

@@ -1,20 +1,20 @@
 
 public class Book {
-	String title;
+	public String title;
-	String author;
+	public String author;
-	int price;
+	public int price;
 
-	//コンストラクタ
+	//引数なしコンストラクタ
 	public Book() {
 		title = "タイトル未設定";
-		author = "著者未設定";
+		author = "著者未定";
-		price = 0;
+		price = ０;
 	}
-
+	//3つの引数を持つコンストラクタ
-	//引数ありコンストラクタ
 	public Book(String title, String author, int price) {
 		this.title = title;
 		this.author = author;
 		this.price = price;
 	}
+
 }

em-oop/src/Circle.java

@@ -0,0 +1,25 @@
+
+public class Circle extends Shape {
+
+	//Shapeクラスを継承
+
+	//フィールド作成
+	private double radius;
+
+	//コンストラクタ作成
+	public Circle(double radius) {
+		super("円");
+		this.radius = radius;
+	}
+
+	//メソッド作成
+	public double area() {
+		return Math.PI * radius * radius;
+	}
+
+	public void showInfo() {
+		super.showInfo();
+		System.out.println("(半径:" + this.radius + ")");
+	}
+
+}

em-oop/src/Day3Check1.java

@@ -0,0 +1,15 @@
+
+public class Day3Check1 {
+
+	public static void main(String[] args) {
+	
+		//インスタンス作成
+		Circle c = new Circle(2);
+		
+		//メソッド呼び出し
+		c.showInfo();
+		
+
+	}
+
+}

em-oop/src/Day3Check2.java

@@ -0,0 +1,11 @@
+
+public class Day3Check2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		Rectangle r = new Rectangle(3, 4);
+		r.showInfo();
+		Greeting gre = new JapaneseGreeting();
+		System.out.println(gre.hello());
+	}
+}

em-oop/src/Day3Check3.java

@@ -0,0 +1,17 @@
+
+public class Day3Check3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		//Shape型の変数shapeにradius引数2のCircle代入
+		Shape shape1 = new Circle(2);
+		shape1.showInfo();
+		
+		//Shape型の変数2に引数(widthが3、heightが4)を代入する
+		Shape shape2 = new Rectangle(3, 4);
+		shape2.showInfo();
+
+	}
+
+}

em-oop/src/EmployeeData.java

@@ -1,115 +1,17 @@
 
 public class EmployeeData {
-	private String idEmployee;
+	String idEmployee; 
-	private String nmEmployee;
+	String nmEmployee;
-	private String knEmployee;
+	String knEmployee;
-	private String mailAddress;
+	String mailAddress;
-	private String password;
+	String password;
-	private String idDepartment;
+	String idDepartment;
-	private static int empCount = 0;
-	static final String COMPANY_NAME = "Rhizome";
 	
-	//コンストラクタ
+	void showInfo(){
-	public EmployeeData() {
+	System.out.println(idEmployee + "\t" + nmEmployee +
-		empCount++;
+			"\t" +knEmployee + "\t" + mailAddress +
-	}
+			"\t" +password + "\t" + idDepartment );
-
-	//引数ありコンストラクタ
-	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++;
 	
 	}
 	
-	@Override
-	public String toString() {
-		return this.idEmployee + "\t" + this.nmEmployee
-				+ "\t" + this.knEmployee + "\t" + this.mailAddress
-				+ "\t" + this.password + "\t" + this.idDepartment;
-	}
-
-	public boolean isMatchId(String id) {
-		return getIdEmployee().equals(id);
-	}
-
-	public static boolean isMatchId(EmployeeData[] employees, String id) {
-		for (EmployeeData e : employees) {
-			if (e.isMatchId(id))
-				return true;
-
-		}
-		return false;
-	}
-
-	public String getIdEmployee() {
-		return idEmployee;
-	}
-
-	public void setIdEmployee(String idEmployee) {
-		if (!check(idEmployee, "社員ID"))
-			return;
-		this.idEmployee = idEmployee;
-	}
-
-	public String getNmEmployee() {
-		return nmEmployee;
-	}
-
-	public void setNmEmployee(String nmEmployee) {
-		if (!check(nmEmployee, "社員名"))
-			return;
-		this.nmEmployee = nmEmployee;
-	}
-
-	public String getKnEmployee() {
-		return knEmployee;
-	}
-
-	public void setKnEmployee(String knEmployee) {
-		this.knEmployee = knEmployee;
-	}
-
-	public String getMailAddress() {
-		return mailAddress;
-	}
-
-	public void setMailAddress(String mailAddress) {
-		this.mailAddress = mailAddress;
-	}
-
-	public String getPassword() {
-		return password;
-	}
-
-	public void setPassword(String password) {
-		this.password = password;
-	}
-
-	public String getIdDepartment() {
-		return idDepartment;
-	}
-
-	public void setIdDepartment(String idDepartment) {
-		this.idDepartment = idDepartment;
-	}
-
-	public static int getEmpCount() {
-		return empCount;
-	}
-
-	private boolean check(String str, String stringName) {
-		if (str == null || str.strip().length() == 0) {
-			System.out.println(stringName + "が空のため設定できませんでした");
-			return false;
-		}
-		return true;
-	}
-
 }

em-oop/src/Greeting.java

@@ -0,0 +1,5 @@
+
+public interface Greeting {
+	String hello();	
+}
+

em-oop/src/Item.java

@@ -1,22 +1,10 @@
 
 public class Item {
-	private String name;
+	//
+	String name;
 	private int price;
 	private int stock;
 	
-	void sell(int amount) {
-		this.setStock(this.getStock() - amount);
-	}
-
-	@Override
-	public String toString() {
-		return this.getName() + "　" + this.getPrice() + "円（残り" + this.getStock() + "個）";
-	}
-
-	int totalPrice() {
-		return this.price * this.stock;
-	}
-
 	public String getName() {
 		return name;
 	}
@@ -40,4 +28,12 @@ public class Item {
 	public void setStock(int stock) {
 		this.stock = stock;
 	}
+
+	void sell(int amount) {
+		this.setStock(this.getStock() - amount);
+	}
+	@Override
+	public String toString() {
+		return getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
+	}
 }

em-oop/src/JapaneseGreeting.java

@@ -0,0 +1,10 @@
+//
+public class JapaneseGreeting implements Greeting{
+	@Override
+	public String hello() {
+		// TODO 自動生成されたメソッド・スタブ
+		return "こんにちは";
+	}
+	
+
+}

em-oop/src/Main.java

@@ -1,119 +1,57 @@
-import java.util.Scanner;
 
 public class Main {
-	public static void main(String[] args) {
-		System.out.println("会社名:" + EmployeeData.COMPANY_NAME);
 
-		//		EmployeeData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ",
+	public static void main(String[] args) {
-		//				"yamada@hoge.jp", "aaa", "10");
+		// TODO 自動生成されたメソッド・スタブ
-		//		System.out.println(employee);
+
-		//
+		//型、変数宣言しインスタンス化
-		//		System.out.println();
+		EmployeeData employee = new EmployeeData();
 		
 		EmployeeData[] employees = new EmployeeData[5];
-		for (int i = 0; i < employees.length; i++) {
+		employees[0] = new EmployeeData();
-			employees[i] = new EmployeeData();
+		employees[1] = new EmployeeData();
-		}
+		employees[2] = new EmployeeData();
+		employees[3] = new EmployeeData();
+		employees[4] = new EmployeeData();
 		
-		employees[0].setIdEmployee("10000");
+		//フィールドに代入
-		employees[0].setNmEmployee("山田龍也");
+		employees[0].idEmployee = "10000";
-		employees[0].setKnEmployee("ヤマダタツヤ");
+		employees[0].nmEmployee = "山田龍也";
-		employees[0].setMailAddress("yamada@hoge.jp");
+		employees[0].knEmployee = "ヤマダタツヤ";
-		employees[0].setPassword("aaa");
+		employees[0].mailAddress = "yamada@hoge.jp";
-		employees[0].setIdDepartment("10");
+		employees[0].password = "aaa";
+		employees[0].idDepartment = "10";
 		
-		employees[1].setIdEmployee("10001");
+		employees[1].idEmployee = "10001";
-		employees[1].setNmEmployee("高橋準\t");
+		employees[1].nmEmployee = "高橋準";
-		employees[1].setKnEmployee("タカハシジュン");
+		employees[1].knEmployee = "タカハシジュン";
-		employees[1].setMailAddress("jtaka@hoge.jp");
+		employees[1].mailAddress = "jtaka@hoge.jp";
-		employees[1].setPassword("bbb");
+		employees[1].password = "bbb";
-		employees[1].setIdDepartment("10");
+		employees[1].idDepartment = "10";
 		
-		employees[2].setIdEmployee("10002");
+		employees[2].idEmployee = "10002";
-		employees[2].setNmEmployee("麻枝史明");
+		employees[2].nmEmployee = "麻枝史明";
-		employees[2].setKnEmployee("マエダフミアキ");
+		employees[2].knEmployee = "マエダフミアキ";
-		employees[2].setMailAddress("fmak@hoge.jp");
+		employees[2].mailAddress = "fumi@hoge.jp";
-		employees[2].setPassword("ccc");
+		employees[2].password = "ccc";
-		employees[2].setIdDepartment("11");
+		employees[2].idDepartment = "11";
 		
-		employees[3].setIdEmployee("10003");
+		employees[3].idEmployee = "10003";
-		employees[3].setNmEmployee("丸戸章介");
+		employees[3].nmEmployee = "丸戸章介";
-		employees[3].setKnEmployee("マルトショウスケ");
+		employees[3].knEmployee = "マルトショウスケ";
-		employees[3].setMailAddress("marusyo@hoge.jp");
+		employees[3].mailAddress = "marusyo@hoge.jp";
-		employees[3].setPassword("ddd");
+		employees[3].password = "ddd";
-		employees[3].setIdDepartment("12");
+		employees[3].idDepartment = "12";
 		
-		employees[4].setIdEmployee("10004");
+		employees[4].idEmployee = "10004";
-		employees[4].setNmEmployee("三宅武\t");
+		employees[4].nmEmployee = "三宅武";
-		employees[4].setKnEmployee("ミヤケタケシ");
+		employees[4].knEmployee = "ミヤケタケシ";
-		employees[4].setMailAddress("miya@hoge.jp");
+		employees[4].mailAddress = "miya@hoge.jp";
-		employees[4].setPassword("eee");
+		employees[4].password = "eee";
-		employees[4].setIdDepartment("13");
+		employees[4].idDepartment = "13";
 		
-		for (EmployeeData e : employees) {
+		for(int i= 0; i < 5 ; i++) {
-			System.out.println(e);
+			employees[i].showInfo();
-			;
-		}
-		System.out.println("現在の社員のデータ件数：" + EmployeeData.getEmpCount() + "件");
-
-		System.out.println();
-
-		//nullおよび前後の空白を取り除いた結果が空文字チェック
-		EmployeeData emp = new EmployeeData("10000", "デフォルト", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
-		System.out.println(emp);
-		emp.setNmEmployee(null);
-		System.out.println(emp);
-		emp.setNmEmployee("  　　");
-		System.out.println(emp);
-
-		System.out.println();
-
-		EmployeeData emptyEmployee = new EmployeeData("", "", "", "", "", "");
-		System.out.println(emptyEmployee);
-
-		System.out.println();
-
-		//IDが一致するか
-		boolean matchIdBool = false;
-		System.out.println("10002 を検索します");
-		for (EmployeeData e : employees) {
-			matchIdBool = e.isMatchId("10002");
-			if (matchIdBool)
-				break;
-		}
-		System.out.println(matchIdBool);
-
-		System.out.println("99999 を検索します");
-		System.out.println(EmployeeData.isMatchId(employees, "99999"));
-
-		System.out.println("10003 を検索します");
-		System.out.println(EmployeeData.isMatchId(employees, "10003"));
-
-		System.out.println();
-
-		Scanner scanner = new Scanner(System.in);
-		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）");
-			System.out.print(">>>>");
-			String findId = scanner.nextLine();
-			if (findId.equals("0")) {
-				System.out.println("システムを終了します");
-				return;
-			}
-
-			boolean matchFlag = false;
-
-			for (EmployeeData e : employees) {
-				if (e.isMatchId(findId)) {
-					System.out.println(e);
-					matchFlag = true;
-					break;
-				}
-			}
-			if (!matchFlag) {
-				System.out.println("該当する社員が見つかりませんでした");
-			}
-			System.out.println();
 		}
 
 	}

em-oop/src/Shape.java

@@ -0,0 +1,22 @@
+
+public class Shape {
+
+	//フィールド作成
+	private String name;
+
+	//コンストラクタ作成
+	public Shape(String name) {
+	}
+
+	//メソッド作成
+	double area() {
+		return 0.0;
+	}
+
+	//メソッド作成
+	void showInfo() {
+		//出力
+		System.out.println(this.name + "の面積は" + this.area() + "です");
+	}
+
+}

em-oop/src/Student.java

@@ -1,20 +1,25 @@
 
 public class Student {
+		//変数を作る
 		int studentId;
 		String name;
+		
+		//フィールド追加
 		static int studentCount = 0;
-
+		//コンストラクタ追加
-	void printProfile() {
-		System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
-	}
-
 		public Student(int studentId,String name) {
 			this.studentId = studentId;
 			this.name = name;
 			studentCount++;
 		}
 		
+		//メソッド追加
 		public static int getStudentCount() {
 			return studentCount;
 		}
+		//メソッド
+		public void printProfile() {
+		System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
+		
+		}
 }