testclasscast.java

有关于java的小练习

public class TestClassCast{
	public static void main(String[] args){
		ClassA c1=new MyClass();
		//MyClass c2=(MyClass)c1;
		System.out.println( c1 instanceof IB);
		IB c3=(IB)c1;
	}
}
class ClassA{
}
interface IB{
}
class MyClass extends ClassA implements IB{
}