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修飾子


abstract class A{
	abstract int nNum();
}

class A1 extends A{
	
	int nNum(){
		return 1;
	}
}

class A2 extends A{
	
	int nNum(){
		return 2;
	}
}

public class Test_Abst {

	public static void main(String[] args) {
		
		System.out.println("Start");

		//抽象クラス
		System.out.println("------------------------");
		
		A Obj1 = new A1();
		A Obj2 = new A2();
		
		System.out.println("Obj1.nNum -> " + Obj1.nNum());
		System.out.println("Obj2.nNum -> " + Obj2.nNum());
		System.out.println("");	

		//Class クラス

		Class Cls1 = Obj1.getClass();
		Class Cls2 = Obj2.getClass();
		
		System.out.println("Obj1 -> " + Obj1.toString());
		System.out.println("Cls1 -> " + Cls1);
		System.out.println("Cls1Super -> " + Cls1.getSuperclass().getName());
		
		System.out.println("Obj2 -> " + Obj2.toString());
		System.out.println("Cls2 -> " + Cls2);
		System.out.println("Cls2Super -> " + Cls2.getSuperclass().getName());
		
		//
		System.out.println("------------------------");
		
		System.out.println("End");
		
	}
}

結果
`Start ------------------------ Obj1.nNum -> 1 Obj2.nNum -> 2 Obj1 -> A1@affc70 Cls1 -> class A1 Cls1Super -> A Obj2 -> A2@1e63e3d Cls2 -> class A2 Cls2Super -> A ------------------------ End`

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