package Test;

public class L3_1 {

    public static void main(String[] args)

    {

        C c1=new C(100);

        C c2=new C(100);

        System.out.println(c1.equals(c2));

    }

}

class B

{

    private int i;

    B(int i)

    {

        this.i=i;

    }

    public boolean equals(B b2)  //面向对象-->多态

    {

        if(this.i==b2.i)

            return true;

        else return false;

    }

}

class C extends B //面向对象-->继承

{

    private int j;

    C(int j)

    {

        super(j);    //初始化父类的带参数构造函数->B(int i)

        this.j=j;

    }

    public boolean equals(B b2)

    {

        C c=(C)b2;  //传递的参数是B类，需要强制转换

        if (this.j==c.j)

            return true;

        else return false;

    }

}