Stept 9

em-oop/src/BasicCheck1.java

@@ -2,16 +2,24 @@
 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();
+		//Book book = new Book();
-		Book book2 = new Book("銀河鉄道の夜", "宮沢賢治", 500);
-
 //		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("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);
+		
+		
 		
-		System.out.println(book1.title +"\n"+ book1.author +"\n"+ book1.price);
-		System.out.println(book2.title +"\n"+ book2.author +"\n"+ book2.price);
 
 	}
 

em-oop/src/BasicCheck2.java

@@ -1,26 +1,18 @@
-
 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 student = new Student();
+//		student.studentId=1;
+//		student.name="鈴木一郎";
 		Student student1 = new Student(1, "鈴木一郎");
-
-		//		student1.studentId = 1;
-		//		student1.name = "鈴木一郎";
-		student1.printProfile();
-
         Student student2 = new Student(2, "田中花子");
-
-		student2.printProfile();
-
         Student student3 = new Student(3, "佐藤次郎");
-
+		student1.printProfile();
+		student2.printProfile();
 		student3.printProfile();
 		
-		Student.getStudentCount();{
+		System.out.println("現在の生徒数は："+Student.getStudentCount());
-			System.out.println("現在の生徒数:" + Student.studentCount + "人");
-		}
-
 	}
 
 }

em-oop/src/BasicCheck3.java

@@ -3,51 +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 item0 = new Item();
+//		items[0]= new Item();
-		Item item1 = new Item();
+//		items[0].name = "ノート";
-		Item item2 = new Item();
+//        items[0].price = 120;
-
+//        items[0].stock = 50;
-		items[0] = item0;
-		items[1] = item1;
-		items[2] = item2;
-
-		item0.setName("ノート");
-		item0.setPrice(120);
-		item0.setStock(50);
-
-		item1.setName("消しゴム");
-		item1.setPrice(80);
-		item1.setStock(30);
-
-		item2.setName("鉛筆");
-		item2.setPrice(60);
-		item2.setStock(100);
-		//		item1.setName = "ノート";
-		//		item1.price = 120;
-		//		item1.stock = 50;
 //
-		//		Item item2 = new Item();
+//        items[1] = new Item();
+//        items[1].name = "消しゴム";
+//        items[1].price = 80;
+//        items[1].stock = 30;
 //
-		//		item2.name = "消しゴム";
+//        items[2] = new Item();
-		//		item2.price = 80;
+//        items[2].name = "鉛筆";
-		//		item2.stock = 30;
+//        items[2].price = 60;
-		//		
+//        items[2].stock = 100;
-		//		Item item3 = new Item();
+		items[0] = new Item();
-		//		
+        items[0].setName("ノート");
-		//		item3.name = "鉛筆";
+        items[0].setPrice(120);
-		//		item3.price = 60;
+        items[0].setStock(50);
-		//		item3.stock = 100;
+       
+
+      
+        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);
-
             System.out.println(items[i]);
+        }
+		
 
 	}
 
 }
-}

em-oop/src/Book.java

@@ -1,20 +1,20 @@
 
 public class Book {
-	public String title;
+	String title;
-	public String author;
+	String author;
-	public int price;
+	int price;
-
 	public Book () {
-		title = "タイトル未設定";
+		this.title="タイトル未設定";
-		author = "著者未設定";
+		this.author = "著者未設定";
-		price = 0;
+		this.price=500;
-
 	}
 	
 	public Book (String title, String author, int price) {
+		
 	this.title= title;
 	this.author= author;
 	this.price= price;
 	
 	}
+
 }

em-oop/src/DayCheck1.java

@@ -1,9 +0,0 @@
-
-public class DayCheck1 {
-
-	public static void main(String[] args) {
-		Circle radius = new Circle(2);
-		
-		radius.showInfo();
-	}
-}

em-oop/src/EmployeeData.java

@@ -1,52 +1,38 @@
 
-public class EmployeeData extends BaseData {
+public class EmployeeData {
 	private String idEmployee;
 	private String nmEmployee;
 	private String knEmployee;
 	private String mailAddress;
 	private String password;
 	private String idDepartment;
-	private static int empCount = 0;
-
-	EmployeeData() {
-		empCount = empCount + 1;
-	}
-
-	EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password,
-			String idDepartment) {
-		setIdEmployee(idEmployee);
-		setNmEmployee(nmEmployee);
-		setKnEmployee(knEmployee);
-		setMailAddress(mailAddress);
-		setPassword(password);
-		setIdDepartment(idDepartment);
-		empCount = empCount + 1;
-	}
 
 	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) {
-		//		2日目段階8
+		// null ဖြစ်နေသလား (သို့မဟုတ်) ရှေ့နောက် Space များကို ဖယ်ရှားလိုက်လျှင် စာသားအလွတ် ဖြစ်သွားသလား စစ်ဆေးခြင်း
-		//		String stripped = nmEmployee.strip();
+		if (nmEmployee == null || nmEmployee.trim().isEmpty()) {
-		//		int length = stripped.length();
+			System.out.println("社員名が空のため設定できませんでした");
-		//		if (nmEmployee == null) {
+		} else {
-		//		System.out.println("社員名が空のため設定できませんでした");
+
-		//		}
-		//		if (length == 0) {
-		//			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;
@@ -80,36 +66,43 @@ public class EmployeeData extends BaseData {
 		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;
 	}
 
-	public static void setEmpCount(int empCount) {
+	//	boolean isMatchId(String id) {                   //stept 7
-		EmployeeData.empCount = empCount;
+	//		return this.idEmployee.equals(id);
-	}
-
-	@Override
-	public String toString() {
-		return getIdEmployee() + "\t" + getNmEmployee() + "\t" + getKnEmployee() + "\t" + getMailAddress()
-				+ "\t" + getPassword() + "\t" + getIdDepartment();
-	}
-
-	//	public boolean isMatchId(String id) {
-	//
-	//		return idEmployee.equals(id);
 	//
 	//	}
-
-	public String toCSV() {
-		return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress()
-				+ "," + getPassword() + "," + getIdDepartment();
-	}
-
-	public String getPrimaryKeyValue() {
-		return idEmployee;
-	}
-
-	public static int empCount() {
-		return empCount;
-	}
 }

em-oop/src/Item.java

@@ -4,18 +4,12 @@ public class Item {
 	private int price;
 	private int stock;
 
-	//	void sell(int amount) {
+//	public Item(String name, int price, int stock) {
-	//		this.stock = this.stock - amount;
+//		this.name = name;
-
+//		this.price = price;
-	public void sell(int amount) {
+//		this.stock = stock;
-		setStock(this.getStock() - amount);
+//
-	}
+//	}
-
-	@Override
-	public String toString() {
-		String output = getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
-		return output;
-	}
 
 	public String getName() {
 		return name;
@@ -41,4 +35,14 @@ public class Item {
 		this.stock = stock;
 	}
 
+	public void sell(int amount) {
+		this.stock = this.stock - amount;
+
+	}
+
+	@Override
+	public String toString() {
+		return getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
+	}
+
 }

em-oop/src/Main.java

@@ -1,79 +1,147 @@
-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];
-		while (true) {
+		EmployeeData employee1 = new EmployeeData();
-
+		employee1.setIdEmployee("10000");
-			System.out.println("検索したい社員IDを入力してください（終了したい場合は0）");
+		employee1.setNmEmployee("山田太郎");
-			Scanner scanner = new Scanner(System.in);
+		employee1.setKnEmployee("ヤマダタツヤ");
-			String id = scanner.nextLine();
+		employee1.setMailAddress("yamada@hoge.jp");
-			boolean bo = false;
+		employee1.setPassword("aaa");
-
+		employee1.setIdDepartment("10");
-			BaseData[] allData = new BaseData[11];
+		//1st person
-
+		//EmployeeData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
-			BaseData 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";
-			BaseData employee1 = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
+		//		employees[0].nmEmployee = "山田龍也";
-
+		//		employees[0].knEmployee = "ヤマダタツヤ";
-			BaseData employee2 = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11");
+		//		employees[0].mailAddress = "yamada@hoge.jp";
-
+		//		employees[0].password = "aaa";
-			BaseData employee3 = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12");
+		//		employees[0].idDepartment = "10";
-
+		EmployeeData employee2 = new EmployeeData();
-			BaseData employee4 = new EmployeeData("10004", "三宅武", "ミヤケタケシ", "miya@hoge.jp,eee", "eee", "13");
+		employee2.setIdEmployee("10001");
-
+		employee2.setNmEmployee("高橋準");
-			allData[0] = employee;
+		employee2.setKnEmployee("タカハシジュン");
-			allData[1] = employee1;
+		employee2.setMailAddress("jtaka@hoge.jp");
-			allData[2] = employee2;
+		employee2.setPassword("bbb");
-			allData[3] = employee3;
+		employee2.setIdDepartment("10");
-			allData[4] = employee4;
+		//		//2nd person
-
+		//		employees[1] = new EmployeeData();
-			BaseData dept = new DepartmentData("10", "役員");
+		//		employees[1].idEmployee = "10001";
-			BaseData dept1 = new DepartmentData("11", "人事・総務部");
+		//		employees[1].nmEmployee = "高橋準";
-			BaseData dept2 = new DepartmentData("12", "経理部");
+		//		employees[1].knEmployee = "タカハシジュン";
-			BaseData dept3 = new DepartmentData("13", "システム開発事業部");
+		//		employees[1].mailAddress = "jtaka@hoge.jp";
-			BaseData dept4 = new DepartmentData("14", "教育事業部");
+		//		employees[1].password = "bbb";
-			BaseData dept5 = new DepartmentData("15", "営業企画部");
+		//		employees[1].idDepartment = "10";
-
+		//		//3rd person
-			allData[5] = dept;
+		EmployeeData employee3 = new EmployeeData();
-			allData[6] = dept1;
+		employee3.setIdEmployee("10002");
-			allData[7] = dept2;
+		employee3.setNmEmployee("麻枝史明");
-			allData[8] = dept3;
+		employee3.setKnEmployee("マエダフミアキ");
-			allData[9] = dept4;
+		employee3.setMailAddress("fmak@hoge.jp");
-			allData[10] = dept5;
+		employee3.setPassword("ccc");
-
+		employee3.setIdDepartment("11");
-//			for (int i = 0; i < allData.length; i++) {
+		//		employees[2] = new EmployeeData();
-//				System.out.println(allData[i]);
+		//		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();
 		//        }
-//			System.out.println("現在の社員データ件数"+ EmployeeData.getEmpCount()+ "件");
+		employee1.showInfo();
+		employee2.showInfo();
+		employee3.showInfo();
+		employee4.showInfo();
+		employee5.showInfo();
 
-			for (int i = 0; i < allData.length; i++) {
+		//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"));
 
-				//			System.out.println(employees[i]);
+		//stept 5
-				if (allData[i].getPrimaryKeyValue().equals(id)) {
+		// employee.showInfo();
-					bo = true;
+		// stept6
-					System.out.println(allData[i]);
 
-					//					System.out.println(employee.toCSV());
+		//        System.out.println(employee.idEmployee);
-					//					System.out.println(employee.getPrimaryKeyValue());
+		//        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;
+		//			}
+
+		//			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++) {
 
-				//			employees[i].isMatchId("10002");
-				//			employees[i].isMatchId("99999");
-				continue;
-			}
-			if (bo == false && !id.equals("0")) {
-				System.out.println("該当する社員が見つかりませんでした");
-			}
-			if (id.equals("0")) {
-				System.out.println("システムを終了します");
-				break;
 		}
+		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/Rectangle.java

@@ -1,18 +0,0 @@
-
-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() {
-		return width * height;
-	}
-
-}

em-oop/src/Shape.java

@@ -1,15 +0,0 @@
-
-public abstract class Shape {
-	private String name;
-
-	public Shape(String name) {
-
-		this.name = name;
-	}
-
-	public abstract double area();
-
-	public void showInfo() {
-		System.out.println(this.name + "の面積は" + this.area() + "です");
-	}
-}

em-oop/src/Student.java

@@ -1,25 +1,24 @@
 
 public class Student {
-	int studentId;
-	String name;
-	static int studentCount = 0;
-	{
-		studentCount++;
-	}
 
-	Student(int studentId, String name) {
+	private int studentId;
+	private String name;
+
+	public Student(int studentId, String name) {
 		this.studentId = studentId;
 		this.name = name;
+		studentCount++;
+
 	}
 
+	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);
-
 	}
 
 }

em-oop/src/day3Keisho/BaseData.java

@@ -1,3 +1,4 @@
+package day3Keisho;
 
 public abstract class BaseData {
 	
@@ -5,4 +6,5 @@ public abstract class BaseData {
 	public abstract String toCSV();
 	public abstract String getPrimaryKeyValue();
 	
+
 }

em-oop/src/day3Keisho/Circle.java

@@ -1,3 +1,4 @@
+package day3Keisho;
 
 public class Circle extends Shape {
 	private double radius;
@@ -5,18 +6,17 @@ public class Circle extends Shape {
 	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

@@ -1,13 +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 Rectangle = new Rectangle(3, 4);
+		Rectangle rect = new Rectangle(3.0, 4.0);
-		Rectangle.showInfo();
+		rect.showInfo();
 		
 		Greeting greeting = new JapaneseGreeting();
+		
 		System.out.println(greeting.hello());
-	}
 		
 	}
+}

em-oop/src/day3Keisho/Day3Check3.java

@@ -1,15 +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

@@ -1,13 +1,9 @@
+package day3Keisho;
 
 public class DepartmentData extends BaseData {
 	private String idDepartment;
     private String nmDepartment;
 
-	public DepartmentData(String idDepartment, String nmDepartment) {
-		setIdDepartment(idDepartment);
-		setNmDepartment(nmDepartment);
-	}
-
 	public String getIdDepartment() {
 		return idDepartment;
 	}
@@ -26,14 +22,20 @@ public class DepartmentData extends BaseData {
 
 	@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

@@ -1,4 +1,6 @@
+package day3Keisho;
 
 public interface Greeting {
 	String hello();
+
 }

em-oop/src/day3Keisho/JapaneseGreeting.java

@@ -1,10 +1,11 @@
+package day3Keisho;
 
 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/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");
+	}
+
+}