字符串比较 - Android [英] String comparison - Android

问题描述

我无法使用以下代码比较两个字符串:

I'm unable to compare two strings using the following code:

我有一个名为gender"的字符串，它的值是Male"或Female".

I have a string named "gender" which will have "Male" or "Female" as its value.

if(gender == "Male")
   salutation ="Mr.";
if(gender == "Female")
   salutation ="Ms.";

这不起作用，所以我尝试了以下方法:

This didn't work, so I tried the following:

String g1="Male";
String g2="Female";
if(gender.equals(g1))
   salutation ="Mr.";
if(gender.equals(g2))
   salutation ="Ms.";

同样，它没有用.谁能告诉我如何使用 if 语句比较字符串值.

Again, it didn't work. Can someone please tell me how to compare string values using the if statement.

推荐答案

试试这个

if(gender.equals("Male"))
 salutation ="Mr.";
if(gender.equals("Female"))
 salutation ="Ms.";

同时删除 if 语句中的 ;(semi-colon )

Also remove ;(semi-colon ) in your if statement

if(gender.equals(g1));

在 Java 中，新手最常遇到的错误之一是使用 == 比较字符串.你必须记住，== 比较的是对象引用，而不是内容.

In Java, one of the most common mistakes newcomers meet is using == to compare Strings. You have to remember, == compares the object references, not the content.

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