ex1.java

java 教程源码

class Parent
{
	void m1()
	{
		System.out.println("m1 in Parent");
	}
	
}
public class Ex1 extends Parent
{
	void m( Parent p)
	{
		p.m1();
	}
	void m1()
	{
		System.out.println("m1 in Child");
	}
	public static void main(String[] args) 
	{
		Ex1 child = new Ex1();
		child.m(child);
		Parent parent = new Parent();
		child.m(parent);
		child.m1();
		parent.m1();
	}
}