Java 子类的 instanceof 父类

package scjp;

class Parent{
	
}
public class Demo57 extends Parent{

	public static void main(String[] args) {
		Demo57 demo57=new Demo57();
		if (demo57 instanceof Parent) {
			System.out.println("demo57 is the instance of Parent");
		}
	}
	
}

输出为demo57 is the instance of Parent，说明子类是父类的实例.instanceof返回的是true