java object 比较_Java比较两个对象

public class Computer {

String name;

String color;

int price;

@Override

public int hashCode() {

final int prime = 31;

int result = 1;

result = prime * result + ((color == null) ? 0 : color.hashCode());

result = prime * result + ((name == null) ? 0 : name.hashCode());

result = prime * result + price;

return result;

}

@Override

public boolean equals(Object obj) {

if (this == obj)

return true;

if (obj == null)

return false;

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

return false;

Computer other = (Computer) obj;

if (color == null) {

if (other.color != null)

return false;

} else if (!color.equals(other.color))

return false;

if (name == null) {

if (other.name != null)

return false;

} else if (!name.equals(other.name))

return false;

if (price != other.price)

return false;

return true;

}

}

这个类重写了Object类的equals方法谁能说一下这思路是什么样的？