Java equals hashcode方法的相关内容

【java面试题】- 为什么重写 equals() 时必须重写 hashCode() 方法？

在Java中，当你重写 equals() 方法时，通常也需要同时重写 hashCode() 方法。这是因为在Java中，hashCode() 方法和 equals() 方法有着密切的关联，它们一起用于对象在哈希表（如HashMap、HashSet等）中的存储和查找。为什么需要同时重写这两个方法呢？主...

Java中的equals和hashCode方法详解

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java中为什么重写equals时必须重写hashCode方法？

在上一篇博文Java中equals和==的区别中介绍了Object类的equals方法，并且也介绍了我们可在重写equals方法，本章我们来说一下为什么重写equals方法的时候也要重写hashCode方法。先让我们来看看Object类源码 /** * Returns a hash c...

java中equals与hashCode还有tostring方法学习记录

1 <br> package javas.fristdome01; import org.testng.annotations.Test; class Person { private String name; private int age; Person() { } Person(S...

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