Java的Set转成逗号分隔的字符串

package com.javaedge.collection.set; import org.apache.commons.lang.StringUtils; import java.util.HashSet; import java.util.Set; /**
 * Set转逗号分隔字符串
 *
 * @author JavaEdge
 * @date 2021/10/8
 */ public class Set2String { public static void main(String[] args) { Set<String> set = new HashSet<>(); set.add("Java"); set.add("Edge"); set.add("公众号"); System.out.println(set); Object[] array = set.toArray(); String splitSet = StringUtils.join(array); System.out.println("splitSet:" + splitSet); String splitSetWithComma = StringUtils.join(array, ","); System.out.println("splitSetWithComma:" + splitSetWithComma); } }