用==比较Java字符串 [英] Comparing java Strings with ==

问题描述

可能重复:
Java String.equals与==

Possible Duplicate:
Java String.equals versus ==

是否可以使用==运算符比较Java字符串?

Is it possible to compare Java Strings using == operator?

为什么我经常看到使用equals()方法代替?

Why do I often see, that equals() method is used instead?

是因为在使用==与文字字符串(例如"Hello")进行比较时，并不意味着调用equals()吗?

Is it because when comparing with literal Strings (like "Hello") using == doesn't imply calling equals()?

推荐答案

在Java中没有 custom 运算符重载. [所以您不能重载它来调用equals()]

there is no custom operator overloading in java. [so you cannot overload it to call equals()]

equals()确保您检查2个对象是否相同，而==检查这是否是完全相同的对象. [因此，不使用==不会调用equals()].

the equals() ensures you check if 2 Objects are identical,while == checks if this is the exact same object. [so no, using == does not invoke equals()].

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