Question

有点奇怪，

我实际上已经设法通过查看示例并弄乱我的代码来回答问题，但我实际上并不完全理解它是如何工作的！

任何解释都会很棒，非常感谢！

代码：

我有一个叫做Player的类，在main方法的另一个类中创建了3个对象。

public boolean equals(Object obj) {

    if (this == obj) {
        return true;
    } else if (obj instanceof Player) {

        Player player = (Player) obj;

        if (player.getName().equals(this.getName())) {
            return true;
        } else {
            return false;
        }
    } else {
        return false;
    }
}

Answer 1

检查评论

public boolean equals(Object obj) {

    if (this == obj) { // if the references are the same, they must be equal
        return true;
    } else if (obj instanceof Player) { 

        Player player = (Player) obj; // we cast the reference

        if (player.getName().equals(this.getName())) { // we compare the name
            return true; // they are equal if names are equal
        } else {
            return false; // otherwise, they aren't 
        }
    } else {
        return false; // if the target object isn't of the type you want to compare, we choose to say it is not equal
    }
}

使用boolean equals（）方法，相同类的两个对象相等

1 个答案: