son.java

JAVA编程思想源代码 值得一下 很难找的

package chapter7;

class Son implements Father {

	public void method() {
		System.out.println("i am son");
	}

	public static void main(String[] args) {
		Father father;
		father = new Son();
		father.method();
//		father = new Son1();
//		father.method();
//
//		father = new Son2();
//		father.method();
		father=new SonExtend();
		father.method();

	}
}
class SonExtend extends Son{

	public void method(){
		System.out.println("i am a new method ");
	}
}

class Son1 implements Father {
	public void method() {
		System.out.println("i am son1");
	}
}

class Son2 implements Father {
	public void method() {
		System.out.println("i am son2");
	}
}