Stept 9

em-oop/src/BasicCheck1.java

@@ -3,25 +3,24 @@ 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 book1 = new Book();
-		book1.title = "タイトル未設定";
-		book1.author ="著者未設定";
-		book1.price = 0;
-		
+		//Book book = new Book();
+//		book.title = "吾輩は猫である";
+//		 book.author ="夏目漱石";
+//		book.price = 800;
+		Book book1 = new Book () ;
 		System.out.println(book1.title);
 		System.out.println(book1.author);
 		System.out.println(book1.price);
 		
-		Book book2 = new Book();
-		book2.title = "銀河鉄道の夜";
-		book2.author ="宮沢賢治";
-		book2.price = 500;
+		Book book2 = new Book("銀河鉄道の夜","宮沢賢治",500);
 
 		System.out.println(book2.title);
 		System.out.println(book2.author);
 		System.out.println(book2.price);
 		
 		
+		
+
 	}
 
 }

em-oop/src/BasicCheck2.java

@@ -1,15 +1,18 @@
-
 public class BasicCheck2 {
+
 	public static void main(String[] args) {
-		Student student = new Student(1,"鈴木一郎");
-		
-		student.studentId = 1;
-		student.name = "鈴木一郎";
-		
-//		System.out.print("学籍番号"+student.studentId);
-//		System.out.print("名前:" + student.name);
-		student.printProfile();
+		// TODO 自動生成されたメソッド・スタブ
+//		Student student = new Student();
+//		student.studentId=1;
+//		student.name="鈴木一郎";
+		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");
+		student1.printProfile();
+		student2.printProfile();
+		student3.printProfile();
 		
+		System.out.println("現在の生徒数は："+Student.getStudentCount());
 	}
 
 }

em-oop/src/BasicCheck3.java

@@ -3,33 +3,54 @@ 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];
 		
-		Item[] items = new Item[3];
-		
+//		items[0]= new Item();
+//		items[0].name = "ノート";
+//        items[0].price = 120;
+//        items[0].stock = 50;
+//
+//        items[1] = new Item();
+//        items[1].name = "消しゴム";
+//        items[1].price = 80;
+//        items[1].stock = 30;
+//
+//        items[2] = new Item();
+//        items[2].name = "鉛筆";
+//        items[2].price = 60;
+//        items[2].stock = 100;
 		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] = 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);
         
+//        Item[] items = {
+//        	    new Item("ノート", 120, 50),
+//        	    new Item("消しゴム", 80, 30),       //this is also fine but the question is make items[i].setName(...),so we should be change
+//        	    new Item("鉛筆", 60, 100)
+//        	};
+       
+
         for (int i = 0; i < items.length; i++) {
             items[i].sell(5);
-		}	
-		
-		for (int i = 0; i < items.length; i++) {
             System.out.println(items[i]);
-			
         }
+		
+
 	}
 
 }

em-oop/src/Book.java

@@ -3,18 +3,18 @@ public class Book {
 	String title;
 	String author;
 	int price;
+	public Book () {
+		this.title="タイトル未設定";
+		this.author = "著者未設定";
+		this.price=500;
+	}
 	
-	public Book() {
-		title = "タイトル未設定";
-		author = "著者未設定";
-		price = 0;
+	public Book (String title, String author, int price) {
+		
+	this.title= title;
+	this.author= author;
+	this.price= price;
 	
 	}
 
-	public Book(String title,String author,int price){
-		
-		this.title = title;
-		this.author = author;
-		this.price = price;
-	}
 }

em-oop/src/EmployeeData.java

@@ -1,23 +1,108 @@
 
 public class EmployeeData {
+	private String idEmployee;
+	private String nmEmployee;
+	private String knEmployee;
+	private String mailAddress;
+	private String password;
+	private String idDepartment;
 
-	String idEmployee;
-	String nmEmployee;
-	String knEmployee;
-	String mailAddress;
-	String password;
-	String idDepartment;
-	
-	void showInfo() {
-		
-		System.out.println(
-				this.idEmployee + "\t"
-				+ this.nmEmployee + "\t"
-				+ this.knEmployee + "\t"
-				+ this.mailAddress + "\t"
-				+ this.password + "\t"
-				+ this.idDepartment
-		);
+	public String getIdEmployee() {
+		return idEmployee;
 	}
 
+	public void setIdEmployee(String idEmployee) {
+		// null ဖြစ်နေသလား (သို့မဟုတ်) ရှေ့နောက် Space များကို ဖယ်ရှားလိုက်လျှင် စာသားအလွတ် ဖြစ်သွားသလား စစ်ဆေးခြင်း
+		if (idEmployee == null || idEmployee.trim().isEmpty()) {
+			System.out.println("社員Idが空のため設定できませんでした");
+		} else {
+			this.idEmployee = idEmployee;
+		}
+	}
+
+	public String getNmEmployee() {
+		return nmEmployee;
+	}
+
+	public void setNmEmployee(String nmEmployee) {
+		// null ဖြစ်နေသလား (သို့မဟုတ်) ရှေ့နောက် Space များကို ဖယ်ရှားလိုက်လျှင် စာသားအလွတ် ဖြစ်သွားသလား စစ်ဆေးခြင်း
+		if (nmEmployee == null || nmEmployee.trim().isEmpty()) {
+			System.out.println("社員名が空のため設定できませんでした");
+		} else {
+
+			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;
+	}
+
+	private static int empCount = 0;
+
+	public void showInfo() {
+		System.out.println(this.idEmployee + "\t" + this.nmEmployee + this.knEmployee + this.mailAddress + this.password
+				+ this.idDepartment);
+		//		System.out.println("社員ID: " + this.getIdEmployee());
+		//        System.out.println("社員氏名: " + this.getNmEmployee());
+		//        System.out.println("フリガナ: " + this.getKnEmployee());
+		//        System.out.println("メールアドレス: " + this.getMailAddress());
+		//        System.out.println("パスワード: " + this.getPassword());
+		//        System.out.println("部署ID: " + this.getIdDepartment());
+	}
+
+	public EmployeeData() {
+		empCount++;
+
+	}
+
+	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++;
+
+	}
+
+	public static int getEmpCount() {
+
+		return empCount;
+	}
+
+	//	boolean isMatchId(String id) {                   //stept 7
+	//		return this.idEmployee.equals(id);
+	//
+	//	}
 }

em-oop/src/Item.java

@@ -1,11 +1,15 @@
 
 public class Item {
-
 	private String name;
 	private int price;
 	private int stock;
 
-
+//	public Item(String name, int price, int stock) {
+//		this.name = name;
+//		this.price = price;
+//		this.stock = stock;
+//
+//	}
 
 	public String getName() {
 		return name;
@@ -31,13 +35,14 @@ public class Item {
 		this.stock = stock;
 	}
 
-	void sell(int amount) {
-		this.setStock(this.getStock() - amount);
+	public void sell(int amount) {
+		this.stock = this.stock - amount;
 
 	}
 
 	@Override
 	public String toString() {
-		return getName() + "" + getPrice() + "円(残り" + getStock() + "個)";
+		return getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
 	}
+
 }

em-oop/src/Main.java

@@ -1,64 +1,147 @@
-
 public class Main {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
+		EmployeeData[] employees = new EmployeeData[5];
+		EmployeeData employee1 = new EmployeeData();
+		employee1.setIdEmployee("10000");
+		employee1.setNmEmployee("山田太郎");
+		employee1.setKnEmployee("ヤマダタツヤ");
+		employee1.setMailAddress("yamada@hoge.jp");
+		employee1.setPassword("aaa");
+		employee1.setIdDepartment("10");
+		//1st person
+		//EmployeeData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
+		//		employees[0] = new EmployeeData();
+		//		employees[0].idEmployee = "10000";
+		//		employees[0].nmEmployee = "山田龍也";
+		//		employees[0].knEmployee = "ヤマダタツヤ";
+		//		employees[0].mailAddress = "yamada@hoge.jp";
+		//		employees[0].password = "aaa";
+		//		employees[0].idDepartment = "10";
+		EmployeeData employee2 = new EmployeeData();
+		employee2.setIdEmployee("10001");
+		employee2.setNmEmployee("高橋準");
+		employee2.setKnEmployee("タカハシジュン");
+		employee2.setMailAddress("jtaka@hoge.jp");
+		employee2.setPassword("bbb");
+		employee2.setIdDepartment("10");
+		//		//2nd person
+		//		employees[1] = new EmployeeData();
+		//		employees[1].idEmployee = "10001";
+		//		employees[1].nmEmployee = "高橋準";
+		//		employees[1].knEmployee = "タカハシジュン";
+		//		employees[1].mailAddress = "jtaka@hoge.jp";
+		//		employees[1].password = "bbb";
+		//		employees[1].idDepartment = "10";
+		//		//3rd person
+		EmployeeData employee3 = new EmployeeData();
+		employee3.setIdEmployee("10002");
+		employee3.setNmEmployee("麻枝史明");
+		employee3.setKnEmployee("マエダフミアキ");
+		employee3.setMailAddress("fmak@hoge.jp");
+		employee3.setPassword("ccc");
+		employee3.setIdDepartment("11");
+		//		employees[2] = new EmployeeData();
+		//		employees[2].idEmployee = "10002";
+		//		employees[2].nmEmployee = "麻枝史明";
+		//		employees[2].knEmployee = "マエダフミアキ";
+		//		employees[2].mailAddress = "fmak@hoge.jp";
+		//		employees[2].password = "ccc";
+		//		employees[2].idDepartment = "11";
+		EmployeeData employee4 = new EmployeeData();
+		employee4.setIdEmployee("10003");
+		employee4.setNmEmployee("丸戸章介");
+		employee4.setKnEmployee("マルトショウスケ");
+		employee4.setMailAddress("marusyo@hoge.jp");
+		employee4.setPassword("ddd");
+		employee4.setIdDepartment("12");
+		//		//4th person
+		//		employees[3] = new EmployeeData();
+		//		employees[3].idEmployee = "10003";
+		//		employees[3].nmEmployee = "丸戸章介";
+		//		employees[3].knEmployee = "マルトショウスケ";
+		//		employees[3].mailAddress = "marusyo@hoge.jp";
+		//		employees[3].password = "ddd";
+		//		employees[3].idDepartment = "12";
+		EmployeeData employee5 = new EmployeeData();
+		employee5.setIdEmployee("10004");
+		employee5.setNmEmployee("三宅武");
+		employee5.setKnEmployee("ミヤケタケシ");
+		employee5.setMailAddress("miya@hoge.jp");
+		employee5.setPassword("eee");
+		employee5.setIdDepartment("13");
+		//		//5th pe5rson
+		//		employees[4] = new EmployeeData();
+		//		employees[4].idEmployee = "10004";
+		//		employees[4].nmEmployee = "三宅武";
+		//		employees[4].knEmployee = "ミヤケタケシ";
+		//		employees[4].mailAddress = "miya@hoge.jp";
+		//		employees[4].password = "eee";
+		//		employees[4].idDepartment = "13";
+		// stept6
+		//        for (int i = 0; i < employees.length; i++) {
+		//            employees[i].showInfo();
+		//        }
+		employee1.showInfo();
+		employee2.showInfo();
+		employee3.showInfo();
+		employee4.showInfo();
+		employee5.showInfo();
 
-		EmployeeData[] Employees = new EmployeeData[5];
+		//stept 7
+		//System.out.println("10002 を検索します");
+		//		System.out.println(employees[2].isMatchId("10002"));
+		//
+		//		System.out.println("99999 を検索します");
+		//		System.out.println(employees[2].isMatchId("99999"));
 
-		Employees[0] = new EmployeeData();
-		Employees[1] = new EmployeeData();
-		Employees[2] = new EmployeeData();
-		Employees[3] = new EmployeeData();
-		Employees[4] = new EmployeeData();
+		//stept 5
+		// employee.showInfo();
+		// stept6
 
-		Employees[0].idEmployee = "10000";
-		Employees[0].nmEmployee = "山田龍也";
-		Employees[0].knEmployee = "ヤマダタツヤ";
-		Employees[0].mailAddress = "yamada@hoge.jp";
-		Employees[0].password = "aaa";
-		Employees[0].idDepartment = "10";
+		//        System.out.println(employee.idEmployee);
+		//        System.out.println(employee.nmEmployee);
+		//        System.out.println(employee.knEmployee);
+		//        System.out.println(employee.mailAddress);
+		//        System.out.println(employee.password);
+		//        System.out.println(employee.idDepartment);
+		//		Scanner scan = 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）");
+		//
+		//			//stept 8
+		//			
+		//			//System.out.println("検索したい社員IDを入力してください");
+		//			String serchId = scan.nextLine();
+		//
+		//			if (serchId.equals("0")) {    //stept 9
+		//				System.out.println("システムを終了します");
+		//				break;
+		//			}
 
-		Employees[1].idEmployee = "10001";
-		Employees[1].nmEmployee = "高橋準";
-		Employees[1].knEmployee = "タカハシジュン";
-		Employees[1].mailAddress = "jtaka@hoge.jp";
-		Employees[1].password = "bbb";
-		Employees[1].idDepartment = "10";
-		
-		Employees[2].idEmployee = "10002";
-		Employees[2].nmEmployee = "麻枝史明";
-		Employees[2].knEmployee = "マエダフミアキ";
-		Employees[2].mailAddress = "fmak@hoge.jp";
-		Employees[2].password = "ccc";
-		Employees[2].idDepartment = "11";
-		
-		Employees[3].idEmployee = "10003";
-		Employees[3].nmEmployee = "丸戸章介";
-		Employees[3].knEmployee = "マルトショウスケ";
-		Employees[3].mailAddress = "marusyo@hoge.jp";
-		Employees[3].password = "ddd";
-		Employees[3].idDepartment = "12";
-		
-		Employees[4].idEmployee = "10004";
-		Employees[4].nmEmployee = "三宅武";
-		Employees[4].knEmployee = "ミヤケタケシ";
-		Employees[4].mailAddress = "miya@hoge.jp";
-		Employees[4].password = "eee";
-		Employees[4].idDepartment = "13";
-		
-		
-//		System.out.println(Employees.idEmployee);
-//		System.out.println(Employees.nmEmployee);
-//		System.out.println(Employees.knEmployee);
-//		System.out.println(Employees.mailAddress);
-//		System.out.println(Employees.password);
-//		System.out.println(Employees.idDepartment);
-		
-		for (int i = 0; i < Employees.length; i++) {
-			Employees[i].showInfo();
+		//			boolean found = false; //←if it haven't this boolean , they can't be decided true or false, so we should be make boolan name (found)
+		for (int i = 0; i < employees.length; i++) {
 
 		}
+		System.out.println("現在社員データ数：" + EmployeeData.getEmpCount() + "件");
+		//				if (employees[i].isMatchId(serchId)) {
+		//					employees[i].showInfo();
+		//					found = true;
+		//					break;
+		//				}
+		//
+		//			}
+		//			if (!found) {
+		//				System.out.println("該当する社員が見つかりませんでした");
+		//			}
+		System.out.println("--- 空文字のテスト ---");
+		employee1.setNmEmployee(""); // စာသားအလွတ်
+		employee1.setIdEmployee("   "); // Space သီးသန့်
+		employee1.setNmEmployee(null); // null တန်ဖိုး
+
 	}
 
+	//scan.close();
+
 }

em-oop/src/Student.java

@@ -1,23 +1,24 @@
 
 public class Student {
-	int studentId;
-	String name;
+
+	private int studentId;
+	private String name;
 
 	public Student(int studentId, String name) {
 		this.studentId = studentId;
 		this.name = name;
+		studentCount++;
 
 	}
 
-	public void printProfile() {
+	private static int studentCount = 0;
+	
+	public static int getStudentCount() {
+		return studentCount;
+	}
+
+	void printProfile() {
 		System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
 	}
-	//public static void main(String[] args) {
-		//Student s = new Student(1,"鈴木一郎");
-		//s.printProfile();
-		
-	//}
-	
 
 }
-

em-oop/src/day3Keisho/BaseData.java

@@ -0,0 +1,10 @@
+package day3Keisho;
+
+public abstract class BaseData {
+	
+	public abstract String toString();
+	public abstract String toCSV();
+	public abstract String getPrimaryKeyValue();
+	
+
+}

em-oop/src/day3Keisho/Circle.java

@@ -0,0 +1,22 @@
+package day3Keisho;
+
+public class Circle extends Shape {
+	private double radius;
+	
+	public Circle (double radius) {
+		super("円");
+		this.radius= radius;
+	}
+	@Override
+	public double area() {
+		return Math.PI * radius * radius;
+		
+	}
+	@Override
+	public void showInfo() {
+		super.showInfo();
+		System.out.println("(半径:" + this.radius + ")");
+		
+	}
+
+}

em-oop/src/day3Keisho/Day3Check1.java

@@ -0,0 +1,13 @@
+package day3Keisho;
+
+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(2.0);
+		
+		circle.showInfo();
+
+	}
+
+}

em-oop/src/day3Keisho/Day3Check2.java

@@ -0,0 +1,15 @@
+package day3Keisho;
+
+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 rect = new Rectangle(3.0, 4.0);
+		rect.showInfo();
+		
+		Greeting greeting = new JapaneseGreeting();
+		
+		System.out.println(greeting.hello());
+		
+	}
+}

em-oop/src/day3Keisho/Day3Check3.java

@@ -0,0 +1,14 @@
+package day3Keisho;
+
+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 shape1 = new Circle(2);
+		shape1.showInfo();
+		Shape shape2 = new Rectangle(3, 4);
+		shape2.showInfo();
+
+	}
+
+}

em-oop/src/day3Keisho/DepartmentData.java

@@ -0,0 +1,41 @@
+package day3Keisho;
+
+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() {
+		// TODO 自動生成されたメソッド・スタブ
+		return getIdDepartment() + "\t" + getNmDepartment();
+	}
+
+	@Override
+	public String toCSV() {
+		// TODO 自動生成されたメソッド・スタブ
+		return getIdDepartment() + "," + getNmDepartment();
+	}
+
+	@Override
+	public String getPrimaryKeyValue() {
+		// TODO 自動生成されたメソッド・スタブ
+		return getIdDepartment();
+	}
+
+}

em-oop/src/day3Keisho/EmployeeData.java

@@ -0,0 +1,99 @@
+package day3Keisho;
+
+public class EmployeeData extends BaseData {
+	private String idEmployee;
+	private String nmEmployee;
+	private String knEmployee;
+	private String mailAddress;
+	private String password;
+	private String idDepartment;
+	
+	
+	public EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password, String idDepartment) {
+        this.idEmployee = idEmployee;
+        this.nmEmployee = nmEmployee;
+        this.knEmployee = knEmployee;
+        this.mailAddress = mailAddress;
+        this.password = password;
+        this.idDepartment = idDepartment;
+    }
+	public EmployeeData() {
+    }
+	
+    public String getIdEmployee(String idEmployee) {
+		return idEmployee;
+	}
+
+	public void setIdEmployee(String idEmployee) {
+		// null ဖြစ်နေသလား (သို့မဟုတ်) ရှေ့နောက် Space များကို ဖယ်ရှားလိုက်လျှင် စာသားအလွတ် ဖြစ်သွားသလား စစ်ဆေးခြင်း
+		if (idEmployee == null || idEmployee.trim().isEmpty()) {
+			System.out.println("社員Idが空のため設定できませんでした");
+		} else {
+			this.idEmployee = idEmployee;
+		}
+	}
+
+	public String getNmEmployee() {
+		return nmEmployee;
+	}
+
+	public void setNmEmployee(String nmEmployee) {
+		// null ဖြစ်နေသလား (သို့မဟုတ်) ရှေ့နောက် Space များကို ဖယ်ရှားလိုက်လျှင် စာသားအလွတ် ဖြစ်သွားသလား စစ်ဆေးခြင်း
+		if (nmEmployee == null || nmEmployee.trim().isEmpty()) {
+			System.out.println("社員名が空のため設定できませんでした");
+		} else {
+
+			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;
+	}
+
+	@Override
+	public String toString() {
+		return idEmployee + "\t" + nmEmployee + "\t" + knEmployee + "\t" + mailAddress + "\t" + password + "\t" + idDepartment;
+    }
+		
+	
+	@Override
+    public String toCSV() {
+        return idEmployee + "," + nmEmployee + "," + knEmployee + "," + mailAddress + "," + password + "," + idDepartment;
+    }
+
+    @Override
+    public String getPrimaryKeyValue() {
+        return idEmployee;
+  
+    }
+
+}

em-oop/src/day3Keisho/Greeting.java

@@ -0,0 +1,6 @@
+package day3Keisho;
+
+public interface Greeting {
+	String hello();
+
+}

em-oop/src/day3Keisho/JapaneseGreeting.java

@@ -0,0 +1,11 @@
+package day3Keisho;
+
+public class JapaneseGreeting implements Greeting {
+	@Override
+	public String hello() {
+		return "こんにちは";
+	}
+	
+	
+
+}

em-oop/src/day3Keisho/Main.java

@@ -0,0 +1,126 @@
+package day3Keisho;
+
+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
+		//EmployeeData[] employees = new EmployeeData[5];
+		BaseData[] employees = new BaseData[5];
+
+		employees[0] = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
+		employees[1] = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
+		employees[2] = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11");
+		employees[3] = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12");
+		employees[4] = new EmployeeData("10004", "三宅武", "ミヤケタケシ", "miya@hoge.jp", "eee", "13");
+
+		System.out.println(employees[0].toCSV());
+		System.out.println(employees[0].getPrimaryKeyValue());
+
+		System.out.println("10002 を検索します");
+		System.out.println(employees[2].getPrimaryKeyValue().equals("10002"));
+
+		BaseData[] allData = new BaseData[11];
+
+		for (int i = 0; i < employees.length; i++) {
+			allData[i] = employees[i];
+		}
+
+		DepartmentData dept1 = new DepartmentData();
+		dept1.setIdDepartment("10");
+		dept1.setNmDepartment("役員");
+		allData[5] = dept1;
+
+		DepartmentData dept2 = new DepartmentData();
+		dept2.setIdDepartment("11");
+		dept2.setNmDepartment("人事・総務部");
+		allData[6] = dept2;
+
+		DepartmentData dept3 = new DepartmentData();
+		dept3.setIdDepartment("12");
+		dept3.setNmDepartment("経理部");
+		allData[7] = dept3;
+
+		DepartmentData dept4 = new DepartmentData();
+		dept4.setIdDepartment("13");
+		dept4.setNmDepartment("システム開発事業部");
+		allData[8] = dept4;
+
+		DepartmentData dept5 = new DepartmentData();
+		dept5.setIdDepartment("14");
+		dept5.setNmDepartment("教育事業部");
+		allData[9] = dept5;
+
+		DepartmentData dept6 = new DepartmentData();
+		dept6.setIdDepartment("15");
+		dept6.setNmDepartment("営業企画部");
+		allData[10] = dept6;
+
+		for (BaseData data : allData) {
+			System.out.println(data.toString());
+		}
+		//Stept 7
+		int employeeCount =0;
+		int departmentCount =0;
+		
+		for(BaseData data: allData) {
+			if(data instanceof EmployeeData) { //instanceof is looking for inside
+				employeeCount++;
+				
+			}else if(data instanceof DepartmentData) {
+				departmentCount++;
+				
+			}
+		}
+		System.out.println("社員データ:" + employeeCount + "件");
+		System.out.println("部署データ:" + departmentCount + "件");
+		
+	//Strpt 8
+		for (BaseData data : allData) {
+		    if (data instanceof EmployeeData) {
+		        // EmployeeData သို့ Cast လုပ်ခြင်း
+		        EmployeeData emp = (EmployeeData) data;
+		        System.out.println(emp.getMailAddress());
+		    }
+		}
+		// Stept 9
+		Scanner scanner = new Scanner(System.in);
+		System.out.print("検索したい部署名を入力してください: ");
+		String targetDepartmentName = scanner.nextLine();
+
+		String targetDepartmentId = null;
+
+		// ၁။ ဌာနနာမည်မှတစ်ဆင့် ဌာန ID (idDepartment) ကို ရှာခြင်း
+		for (BaseData data : allData) {
+		    if (data instanceof DepartmentData) {
+		        DepartmentData dept = (DepartmentData) data;
+		        if (targetDepartmentName.equals(dept.getNmDepartment())) {
+		            targetDepartmentId = dept.getIdDepartment();
+		            break;
+		        }
+		    }
+		}
+
+		// ၂။ ဌာန ID တူညီသည့် ဝန်ထမ်းများကို ရှာဖွေပြီး ထုတ်ပြခြင်း
+		if (targetDepartmentId != null) {
+		    boolean found = false;
+		    for (BaseData data : allData) {
+		        if (data instanceof EmployeeData) {
+		            EmployeeData emp = (EmployeeData) data;
+		            if (targetDepartmentId.equals(emp.getIdDepartment())) {
+		                System.out.println(emp.getNmEmployee() + "\t" + emp.getMailAddress());
+		                found = true;
+		            }
+		        }
+		    }
+		    if (!found) {
+		        System.out.println("その部署に所属する社員は見つかりませんでした");
+		    }
+		} else {
+		    System.out.println("該当する部署が見つかりませんでした");
+		}
+
+		scanner.close();
+	}
+}

em-oop/src/day3Keisho/Rectangle.java

@@ -0,0 +1,21 @@
+package day3Keisho;
+
+public class Rectangle extends Shape {
+	private double width;
+	private double height;
+	
+	
+	public Rectangle(double width,double height) {
+		super("四角形");
+		this.height=height;
+		this.width=width;
+	}
+
+	@Override
+	public double area() {
+		// TODO 自動生成されたメソッド・スタブ
+		//super.showInfo();
+		return width*height;
+	}
+
+}

em-oop/src/day3Keisho/Shape.java

@@ -0,0 +1,22 @@
+package day3Keisho;
+
+//public class Shape { //stept 1
+	
+	public abstract class Shape{ //stept 2
+	private String name;
+
+	public Shape(String name) {
+		this.name = name;
+	}
+
+	public abstract double area();  //stept 2
+//	public double area() { //stept 1
+//		return 0.0;
+//
+//	}
+
+	public void showInfo() {
+		System.out.println(this.name + "の面積は" + this.area() + "です");
+	}
+
+}