20261030

Question14-Interface/src/main/java/Book.java

@@ -1,12 +1,8 @@
 
 public interface Book {
 	
-	String bookname;
-	
-	
-	//メソッドの定義
-	void bookPrint();
-	
-	String chapter(String chapter1,String chapter2,String chapter3,String chapter4,String chapter5);
+	//Printメソッドの宣言
+	void Print();
 	
+		
 }

Question14-Interface/src/main/java/Car.java

@@ -0,0 +1,4 @@
+
+public interface Car {
+	void Print();
+}

Question14-Interface/src/main/java/Question14_01.java

@@ -1,9 +1,8 @@
 
 public class Question14_01 {
 	public static void main(String[] args) {
-		Book book = new Book();
-		book.bookname = "プログラミング基礎入門";
+		Book bk = new programmingBook();
 		
-		System.out.println(book.chapter());
+		bk.Print();
 	}
 }

Question14-Interface/src/main/java/Question14_02.java

@@ -0,0 +1,10 @@
+
+public class Question14_02 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		Car car = new Sportscar();
+		car.Print();
+	}
+
+}

Question14-Interface/src/main/java/Sportscar.java

@@ -0,0 +1,17 @@
+
+public class Sportscar implements Car{
+	int gasolene = 100;
+	int speed = 301;
+	
+	public void Print() {
+		System.out.println("ハイオクを" + gasolene +"リットル補充した");
+		
+		if(speed >= 300) {
+			System.out.println("速度オーバーです");
+		} else {
+			System.out.println("スポーツカーは時速" + speed +"キロで走った");
+		}
+	}
+
+
+}

Question14-Interface/src/main/java/programmingBook.java

@@ -1,14 +1,12 @@
-
 public class programmingBook implements Book {
 	
-	String bookname;
-	
-	public void bookPrint() {
-		System.out.println("プログラミング基礎入門");
+	//フィールド
+			String bookname = "プログラミング基礎入門";//本のタイトル
+			String[] chapter = {"式と変数","制御構文","メソッド","オブジェクト指向","継承"};//章立て(配列)
+		
+	//コンストラクタ？？
+	public void Print() {
+		System.out.println(bookname);
+		System.out.println(chapter[0] + chapter[1] + chapter[2] + chapter[3] + chapter[4]);
 	}
-	
-	public String chapter(String chapter1,String chapter2,String chapter3,String chapter4,String chapter5) {
-		return chapter1+"/"+ chapter2 +"/"+ chapter3 +"/"+ chapter4 +"/"+ chapter5;
-	}
-
 }