Compare commits
9 Commits
m_shimizu
...
28b8e508f3
| Author | SHA1 | Date | |
|---|---|---|---|
| 28b8e508f3 | |||
| 1f57c5b7e0 | |||
| 2c6742fd26 | |||
| 9780db9a8f | |||
| 439556d4cc | |||
| 012cbcd562 | |||
| f4acecff05 | |||
| cdf731795f | |||
| c82f9ca678 |
@@ -3,17 +3,22 @@ public class BasicCheck1 {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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Book book = new Book();
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book.title = "吾輩は猫である";
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book.author ="夏目漱石";
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book.price = 800;
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// Book book = new Book();
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// book.title = "吾輩は猫である";
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// book.author ="夏目漱石";
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// book.price = 800;
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System.out.println(book.title);
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System.out.println(book.author);
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System.out.println(book.price);
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Book book1 = new Book();
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System.out.println(book1.title);
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System.out.println(book1.author);
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System.out.println(book1.price);
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Book book2 = new Book("銀河鉄道の夜","宮沢賢治", 500);
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System.out.println(book2.title);
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System.out.println(book2.author);
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System.out.println(book2.price);
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}
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@@ -1,14 +1,37 @@
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public class BasicCheck2 {
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public static void main(String[] args) {
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Student student = new Student(1,"鈴木一郎");
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student.studentId = 1;
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student.name = "鈴木一郎";
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// Student student = new Student(3,"a");
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//Student型のstudentを宣言、インスタンスを代入する
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Student student1 = new Student(1,"鈴木一郎");
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Student student2 = new Student(2, "田中花子");
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Student student3 = new Student(3,"佐藤次郎");
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// System.out.print("学籍番号"+student.studentId);
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// System.out.print("名前:" + student.name);
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student.printProfile();
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// student1.studentId = 1;
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// student1.name = "鈴木一郎";
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// //studentIDに1,nameに鈴木一郎を代入
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//
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// student2.studentId = 2;
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// student2.name ="田中花子";
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//
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// student3.studentId = 3;
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// student3.name ="佐藤次郎";
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//
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//studentのprintProfileメソッドを呼び出す
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student1.printProfile();
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student2.printProfile();
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student3.printProfile();
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Student.getStudentCount();
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}
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}
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//
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//System.out.print("学籍番号"+student.studentId);
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//System.out.print("名前:" + student.name);
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53
em-oop/src/BasicCheck3.java
Normal file
53
em-oop/src/BasicCheck3.java
Normal file
@@ -0,0 +1,53 @@
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public class BasicCheck3 {
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public static void main(String[] args){
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Item[] items = new Item[3];
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items[0] = new Item();
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items[0].setName("ノート");
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items[0].setPrice(80);
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items[0].setStock(50);
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items[1] = new Item();
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items[1].setName("ノート");
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items[1].setPrice(120);
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items[1].setStock(30);
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items[2] = new Item();
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items[2].setName("ノート");
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items[2].setPrice(60);
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items[2].setStock(100);
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for(int i = 0; i < items.length; i++ )
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{
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items[i].sell(5);
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}
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System.out.println("在庫");
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for(int i = 0; i < items.length; i ++) {
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//items[i]をprintlnに渡すとitemクラスのtoStringが自動で呼ばれる
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System.out.println(items[i]);
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// System.out.println("商品名" + items[i].name+ "価格" + items[i].price +"在庫" + items[i].stock);
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// System.out.println("価格" + items[i].price);
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// System.out.println("在庫" + items[i].stock);
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}
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// Item 0 = new Item("ノート", 120, 50);
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}
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}
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@@ -1,7 +1,24 @@
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public class Book {
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String title;
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String author;
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int price;
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public String title;
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public String author;
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public int price;
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//引数なしコンストラクタ
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public Book() {
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this.title = "タイトル未設定";
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this.author = "著者未設定";
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this.price = 0;
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// System.out.println("コンストラクタが呼び出されました");
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}
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//引数ありコンストラクタ
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public Book(String title, String author, int price) {
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// System.out.println("引数なしのコンストラクタが呼び出されました");
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this.title = title;
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this.author = author;
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this.price = price;
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}
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}
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21
em-oop/src/Circle.java
Normal file
21
em-oop/src/Circle.java
Normal file
@@ -0,0 +1,21 @@
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public class Circle extends Shape { //shapeクラスを継承する
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private double radius; //radius: 半径 フィールドradius (double型、private)
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public Circle(double radius) { //コンストラクタpub 引数dou/raを受け取る
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super("円"); //"円"呼び出し 文字列
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this.radius = radius; //radiusフィールドにも引数の値を代入する。
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}
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public double area() { //Overrideは 子クラスで!
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return Math.PI * radius * radius;
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}
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public void showInfo(){
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super.showInfo();
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System.out.println("(半径:" + this.radius + ")");
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}
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}
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14
em-oop/src/Day3Check1.java
Normal file
14
em-oop/src/Day3Check1.java
Normal file
@@ -0,0 +1,14 @@
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public class Day3Check1 {
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public static void main(String[] args) {
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Circle circle = new Circle(2);
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circle.area();
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circle.showInfo();
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// Rectangle rectangle = new Rectangle(2);
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// rectangle.area();
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employee.showinfo();
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}
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}
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22
em-oop/src/Day3Check2.java
Normal file
22
em-oop/src/Day3Check2.java
Normal file
@@ -0,0 +1,22 @@
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public class Day3Check2 {
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public static void main(String[] args) {
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//Rect-クラスをもとにrect-のインスタンスつくる
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//3,4をRectangleのコンストラクタに渡す
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Rectangle rectangle = new Rectangle(3, 4);
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//Rect-はShapeを継承しているため親クラスのshowInfoメソッドを使える
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rectangle.showInfo();
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//JaGrクラスをもとにインスタンスをつくる
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//変数の型はGreetingインタフェース型にしている
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Greeting greeting = new JapaneseGreeting();
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//greeetingのhelloメソッドよびだす
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//実際に入っているインスタンスはJaGrなのでJaGrで作ったhello()が実行される
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System.out.println(greeting.hello());
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}
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}
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15
em-oop/src/Day3Check3.java
Normal file
15
em-oop/src/Day3Check3.java
Normal file
@@ -0,0 +1,15 @@
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public class Day3Check3 {
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public static void main(String[] args) {
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//Shape型の変数にCircleのインスタンスを代入
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Shape shape1 = new Circle(2);
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//円の情報を表示
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shape1.showInfo();
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//Shape型の変数にRectangleのインスタンスを代入
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Shape shape2 = new Rectangle(3, 4);
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//四角形の情報を表示
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shape2.showInfo();
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}
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}
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23
em-oop/src/EmployeeData.java
Normal file
23
em-oop/src/EmployeeData.java
Normal file
@@ -0,0 +1,23 @@
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public class EmployeeData {
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// public static void main(String args[]) {
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String idEmployee ;
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String nmEmployee ;
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String knEmployee ;
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String mailAddress ;
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String password ;
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String idDepartment ;
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// public String Employee(String idEmployee) {
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// this.idEmployee= idEmployee;
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// }
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public void showinfo() {
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// this.idEmployee = idEmployee;
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System.out.println(this.idEmployee + "\t" + this.nmEmployee+ "\t" + this.knEmployee + "\t"+ this.mailAddress+ "\t" + this.password + "\t"+ this.idDepartment );
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}
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}
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4
em-oop/src/Greeting.java
Normal file
4
em-oop/src/Greeting.java
Normal file
@@ -0,0 +1,4 @@
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public interface Greeting {
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String hello();
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}
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54
em-oop/src/Item.java
Normal file
54
em-oop/src/Item.java
Normal file
@@ -0,0 +1,54 @@
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public class Item {
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//フィールドを宣言・外から触れないようにprivate
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private String name;
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private int price;
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private int stock;
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//nameを取得するgetter
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public String getName() {
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return name;
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}
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//nameを設定するsetter
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public void setName(String name) { //item="ノート"はもう使えない。item[0].setName("ノート")にしている
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this.name = name;
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}
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//priceを取得するgetter
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public int getPrice() {
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return price;
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}
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//priceを設定するsetter
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public void setPrice(int price) {
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this.price = price;
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}
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//stockを取得するgetter
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public int getStock() {
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return stock;
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}
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public void setStock(int stock) {
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this.stock = stock;
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}
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// Item(String name, int price, int stock){
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// this.name = name;
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// this.price = price;
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// this.stock = stock;
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// }
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//売れた数を在庫から引く
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public void sell(int amount) {
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this.setStock(this.getStock() - amount);
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}
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//Itemの情報を文字列として返す
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@Override
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public String toString() {
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return getName() + "" + getPrice() + "円(残り" + getStock() + "個)";
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}
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}
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13
em-oop/src/JapaneseGreeting.java
Normal file
13
em-oop/src/JapaneseGreeting.java
Normal file
@@ -0,0 +1,13 @@
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//JaGrクラスを作る、implements GrによってGreetingインターフェースを実装する
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public class JapaneseGreeting implements Greeting {
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//Grインターフェースで定義されているhello()メソッドをこのクラスに実装する
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@Override
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public String hello() {
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//hello()が呼び出されたらString型の文字列を呼び出し元に返す
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return "こんにちは";
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}
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}
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35
em-oop/src/Main.java
Normal file
35
em-oop/src/Main.java
Normal file
@@ -0,0 +1,35 @@
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public class Main {
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public static void main(String[] args) {
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EmployeeData employee = new EmployeeData() ;
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String idEmployee = "10000";
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String nmEmployee = "山田龍也";
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String knEmployee = "ヤマダタツヤ";
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String mailAddress = "yamada@hoge.jp";
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String password = "aaa";
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String idDepartment = "10";
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employee.idEmployee = "1000";
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employee.nmEmployee = "山田龍也";
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employee.knEmployee = "ヤマダタツヤ";
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employee.mailAddress ="yamada@hoge.jp";
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employee.password = "aaa";
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employee.idDepartment ="10";
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employee.showinfo();
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// System.out.println(employee);
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// System.out.println(idEmployee);
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// System.out.println(nmEmployee);
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// System.out.println(knEmployee);
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// System.out.println(mailAddress);
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// System.out.println(password);
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// System.out.println(idDepartment);
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}
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}
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22
em-oop/src/Rectangle.java
Normal file
22
em-oop/src/Rectangle.java
Normal file
@@ -0,0 +1,22 @@
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public class Rectangle extends Shape {
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private double width;
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private double height; {
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}
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public Rectangle(double width, double height) {
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super("四角形");
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this.width = width;
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this.height = height;
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}
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public double area() {
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return width * height;
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}
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// public void showInfo(){
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// super.showInfo();
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// System.out.println("(半径:" + this.area + ")");
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// }
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}
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36
em-oop/src/Shape.java
Normal file
36
em-oop/src/Shape.java
Normal file
@@ -0,0 +1,36 @@
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public abstract class Shape {
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private String name; //フィールドname ・privateにしなきゃいけない
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// public double area;
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// public int radius;
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public Shape() {
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}
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public Shape(String name) {
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this.name = name; //Circleが"円"を呼び出すための文字列をいれるところ
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}
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public abstract double area();{ //メソッドarea 引数なし・戻り値double 中身return0.0;
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// return 0.0;
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}
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// @Override
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public void showInfo(){ //メソッドshowinfo 引数戻り値なし・中身はsyso
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System.out.println(this.name + "の面積は" + this.area() + "です");
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// System.out.println("(半径:" + this.radius + ")");
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System.out.println("四角形" + "の面積は" + this.area() + "です。");
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}
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// @Override
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// public void showInfo(){
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//
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// }
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}
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@@ -1,22 +1,53 @@
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public class Student {
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int studentId;
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String name;
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public Student(int studentId, String name) {
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this.studentId = studentId;
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this.name = name;
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}
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public void printProfile() {
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System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
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}
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public static void main(String[] args) {
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Student s = new Student(1,"鈴木一郎");
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s.printProfile();
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public class Student {//クラス新規作成
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int studentId; //フィールドを宣言 int
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String name; //String
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static int studentCount = 0; //生徒が何人作られたかを数えるための、クラス全体で共有するフィールド
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void printProfile() {//メソッドを宣言・以下の内容をsysoで出力
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// for(int i = 0; i <= 3; i++) {
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System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
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// }
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// System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
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}
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public Student(int studentId, String name) { //コンストラクタを追加
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this.studentId = studentId; //渡された引数をそれぞれ対応するフィールドに代入する
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this.name = name;
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studentCount++;
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}
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public static int getStudentCount() {
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// studentCount++;
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return studentCount;
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}
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}
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||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// public static void main(String[] args) {
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||||
// Student s = new Student(1,"鈴木一郎");
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||||
// s.printProfile();
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||||
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||||
//
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||||
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||||
//
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||||
// public Student(int studentId, String name) {
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||||
// student.studentId = 1;
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||||
|
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Reference in New Issue
Block a user