test.java

来自「JAVA培训用实用代码」· Java 代码 · 共 20 行

class OldMan{
	public void drink(){
		System.out.println("in superclass,drink vodka!");
	}
}

class YoungMan extends OldMan{
	public void drink(){
		System.out.println("in subclass,drink beer!");
	}	
}

public class Test{  	
	public static  void main(String args[]){
		OldMan e = new YoungMan();
		e.drink();
	}
}