在java中将列表转换为逗号分隔字符串的最佳方法

问题描述

我有 Set;结果 &想将其转换为逗号分隔的字符串.我的方法如下所示，但也在寻找其他意见.

I have Set<String> result & would like to convert it to comma separated string. My approach would be as shown below, but looking for other opinion as well.

List<String> slist = new ArrayList<String> (result);
StringBuilder rString = new StringBuilder();

Separator sep = new Separator(", ");
//String sep = ", ";
for (String each : slist) {
    rString.append(sep).append(each);
}

return rString;

推荐答案

Java 8 起:

String.join(",", slist);

来自 Apache Commons 库:

From Apache Commons library:

import org.apache.commons.lang3.StringUtils

用途:

StringUtils.join(slist, ',');

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