testinterface.java

来自「有关于java的小练习」· Java 代码 · 共 50 行

public class TestInterface{
	public static void main(String[] args){
		Impl i=new Impl();
		/*
		System.out.println(i instanceof Impl);
		System.out.println(i instanceof IA);
		System.out.println(i instanceof IB);
		System.out.println(i instanceof IC);
		System.out.println(i instanceof ID);
		System.out.println(i instanceof ClassE);
		*/
		IA a=i;
		IB b=i;
		IC c=i;
		ID d=i;
		ClassE e=i;
		
	}
}
abstract class ClassA{
	public static final int A=10;
	public abstract void m1();
	public abstract void m2();
}
interface IA{
	int A=10;
	void m1();
	void m2();
}
interface IB{
	void m3();
}
interface IC{
	void m4();	
}
interface ID extends IB,IC{
	void m5();
}
abstract class ClassE{
	public abstract void m6();
}
class Impl extends ClassE implements IA,ID{
	public void m1(){}
	public void m2(){}
	public void m3(){}
	public void m4(){}
	public void m5(){}
	public void m6(){}
}