集合之间插入字符（例如逗号）StringUtil.join

import org.apache.commons.lang.StringUtils;

package com.wondertek.mobilevideo.core.util.ftp;import java.util.ArrayList;import java.util.List;import org.apache.commons.lang.StringUtils;import com.wondertek.mobilevideo.core.util.StringUtil;public class TestJoin {     public static void main(String[] args) {           List<Object> arrayList = new ArrayList<Object>();           arrayList.add("11");           arrayList.add("22");           arrayList.add("33");           arrayList.add("44");           String join = StringUtils.join(arrayList, ",");           System.out.println(join);             //11,22,33,44     }}

狠好用！