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;
}

}
這個(gè)類重寫了Object類的equals方法誰能說一下這思路是什么樣的？