Java - replace a character at a specific index in a string?

转载于 2014-10-29 11:32:00 发布 · 62 阅读

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原文链接：http://www.cnblogs.com/savagemorgan/p/4059044.html

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本文详细介绍了在Java中如何通过substring方法和StringBuilder类实现字符串特定位置字符的替换，提供了两种实用的替换策略，并附有示例代码。

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String are immutable in Java. You can't change them.

You need to create a new string with the character replaced.

String myName = "domanokz";
String newName = myName.substring(0,4)+'x'+myName.substring(5);

or you can use a StringBuilder:

StringBuilder myName = new StringBuilder("domanokz");
myName.setCharAt(4, 'x');

System.out.println(myName);

http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-index-in-a-string

posted on 2014-10-29 11:32 罗斯摩根阅读( ...) 评论( ...) 编辑收藏

转载于:https://www.cnblogs.com/savagemorgan/p/4059044.html