方式一：循环遍历拼接的方式 public void ListToString() { List<String> list = Arrays.asList("张三", "李四", "王五", "赵六");StringBuilder builder = new StringBuilder();for (int i = 0; i < list.size(); i++) { builder.append(list.get(i));builder.append(",");} String substring...
` // 第一种方式: Listlist = new ArrayList<>(); list.add("a"); list.add("b"); list.add("c"); StringBuilder sb = new StringBuilder(); String result = ""; for(int i=0;i<list.size();i++){ if(i<list.size()-1){ sb.append(list.get(i)); sb.append(","); }else{ sb...
正式开始 1System.out.println("++++++++++++++++++");2System.out.println("List转字符串");3List<String> list1 =newArrayList<String>();4list1.add("1");5list1.add("2");6list1.add("3");7String ss = String.join(",", list1);8System.out.println(StringUtils.join("",list1));...
//String.join() String str = String.join(",", list); //遍历list集合存入StringBuilder StringBuilder sb = new StringBuilder(); for(int i = 0;i < list.size();i++){ sb.append(list.get(i)); } //流 String str = list.stream().collect(Collectors.joining(",")); ...
Java:String和List互相转换,packagedemo;importjava.util.ArrayList;importjava.util.Arrays;importjava.util.List;publicclassListDemo{publicstaticvoidmain(String[]args){Stringstr="A,B";//字符串转ListList<String>list=newArrayList<&
有关文档，请参阅here，请注意，您还可以调用此方法，使其填充传递的数组，而不仅仅是使用它来确定要...
("还原原来的数据="+strings);}/* * String to List */privateList<String>stringToList(Stringstrs){Stringstr[]=strs.split(",");returnArrays.asList(str);}/* * List to String */publicstaticStringjoin(@NonNullCharSequencedelimiter,@NonNullIterabletokens){finalIterator<?>it=tokens.iterator();...
Java:将List<string>转换为字符串JavaScriptArray.join()js>["Bill","Bob","Steve"].join(" and ")Bill and Bob and SteveJava有类似的东西吗?我知道我可以用StringBuilder拼凑一些东西:static public String join(List<String> list, String conjunction){ StringBuilder sb = new StringBuilder(); boolean ...
1. String.join()方法: String str= String.join(",",list);//1,2,null,3,4 2.StringUtils.join()方法: String str2 = StringUtils.join(list,",");//1,2,,3,4 区别在于String会把null转化为字符串"null",而StringUtils会把null视为空字符串,并且String.join()为Java 8新增方法。