對不對?。?/p>

package com.Imooc01;

public class Initail {

public static void main(String[] args) {

Iphone iphone6=new Iphone();

Iphone iphone6s=new Iphone();

if(iphone6.equals(iphone6s)){

System.out.println("兩個對象是相同的");

}else{

System.out.println("兩個對象是不相同的");

}

}

}

package com.Imooc01;

public class Telphone {

float screen=5.0f;

float cpu=1.4f;

float mem=2.0f;

}

package com.Imooc01;

public class Iphone extends Telphone {

float screen=5.0f;

float cpu=1.4f;

float mem=2.0f;

@Override

public int hashCode() {

final int prime = 31;

int result = 1;

result = prime * result + Float.floatToIntBits(cpu);

result = prime * result + Float.floatToIntBits(mem);

result = prime * result + Float.floatToIntBits(screen);

return result;

}

@Override

public boolean equals(Object obj) {

if (this == obj)

return true;

if (obj == null)

return false;

if (getClass() != obj.getClass())

return false;

Iphone other = (Iphone) obj;

if (Float.floatToIntBits(cpu) != Float.floatToIntBits(other.cpu))

return false;

if (Float.floatToIntBits(mem) != Float.floatToIntBits(other.mem))

return false;

if (Float.floatToIntBits(screen) != Float.floatToIntBits(other.screen))

return false;

return true;

}

}