课程作业五

package test;
class plus1
{public int add(int i){return i+1;}
    }
class plus2 extends plus1
{public int add(int j){return j+10;}
 public int add1(int k){return super.add(k);}
    }
public class Fruit
{
    public static void main(String args[])
    {
        plus2 f=new plus2();
        System.out.println(f.add(1));
        System.out.println(f.add1(1));
    }