在java中用逗号替换逗号 [英] Replace comma with newline in java

问题描述

我的要求是用换行符替换字符串中的所有逗号。

My requirement is to replace all commas in a string with newline.

示例：

AA,BB,CC

应表示为

AA
BB
CC

这是我用newline替换逗号的实现，

here's my implementation to replace commas with newline,

public String getFormattedEmails(String emailList) {
    List<String> emailTokens = Arrays.asList(emailList.split(","));
    String emails = "";
    StringBuilder stringBuilder = new StringBuilder();
    String delimiter = "";
    for(String email : emailTokens){
        stringBuilder.append(delimiter);
        stringBuilder.append(email);
        delimiter = "\n";
    }
    emails = stringBuilder.toString();
    return emails;
}

此方法用空格替换所有逗号。
有谁可以指出我哪里出错？

this method replaces all commas with a space. can anyone point me where did I go wrong?

推荐答案

只需使用以下代码：

String emailList="AA,BB,CC";
emailList=emailList.replaceAll(",", "\n");
System.out.println(emailList);

输出

AA
BB
CC

现在基于您的代码，您的方法如下所示：

Now based on above your code, your method looks like following:

public String getFormattedEmails(String emailList) {
String emails=emailList.replaceAll(",", "\n");
return emails;
}

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