Java 三大特性之继承
继承可以不用重新编写已有的特性,同时又可以根据需求来覆写方法
父类:
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public class Father { protected String getText(){ return "I am Father"; } }
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子类:
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public class Son extends Father{ protected String getText(){ return "I am Son"; } }
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客户端:
public class Main { public static void main(String[] args) { Father f=new Father(); System.out.println(f.getText()); Father f2=new Son(); System.out.println(f2.getText()); } }
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I am Father I am Son
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原文:http://hw1287789687.iteye.com/blog/2255599