sample5_8.java

封装

public class Sample5_8
{
	public static void main(String[] args)
	{
      Fruit f=new Apple();
      System.out.println("调用父类子类共有的成员变量name="+f.name);
      System.out.println("子类特有的成员变量aname="+f.aname);
	}    
}
//水果类
class Fruit
{
	String name="水果";
}
//苹果类
class Apple extends Fruit
{
	String name="苹果";
	String aname="苹果a";
}