如何从String中删除单个字符 [英] How to remove single character from a String

问题描述

为了访问Java中String的单个字符，我们有 String.charAt（2）。是否有任何内置函数可以删除java中String的单个字符？

For accessing individual characters of a String in Java, we have String.charAt(2). Is there any inbuilt function to remove an individual character of a String in java?

这样的事情：

if(String.charAt(1) == String.charAt(2){
   //I want to remove the individual character at index 2. 
}

推荐答案

您还可以使用可变的 StringBuilder 类。

You can also use the StringBuilder class which is mutable.

StringBuilder sb = new StringBuilder(inputString);

它的方法有 deleteCharAt（） ，以及许多其他mutator方法。

It has the method deleteCharAt(), along with many other mutator methods.

只需删除您需要的字符删除然后得到如下结果：

Just delete the characters that you need to delete and then get the result as follows:

String resultString = sb.toString();

这可以避免创建不必要的字符串对象。

This avoids creation of unnecessary string objects.

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