//List转换为String数组List<String> list =newArrayList<String>(); list.add("a1"); list.add("a2"); String[] toBeStored= list.toArray(newString[list.size()]);for(String s : toBeStored) { System.out.println(s); }//String数组转换为ListString[] arr =newString[] {"1", "2"}; List...
//准备一个String数组 String[] strs = {"aa","bb","cc"}; //String数组转List List<String> strsToList1= Arrays.asList(strs); for(String s:strsToList1){ System.out.println(s); } 方法二: //准备一个String数组 String[] strs = {"aa","bb","cc"}; //String数组转List List<Strin...
List ==》 String //StringUtils.join(): 参数一:集合 参数二:连接符 String join = StringUtils.join(list, "-"); //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....
List转String #java8 List<String>lists=Arrays.asList("1","2","3","4","5");#方法一 String str1=String.join(",",lists);#方法二 String str2=lists.stream().collect(Collectors.joining(",")) List 转 数组 ArrayList<String>list=newArrayList<String>();String[]strings=newString[list.size...
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<&
("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();...
String str = String.join(",", list);// StringUtils.join(list, ",");System.out.println("String.join() 转化后的字符串 : " + str);} 打印输出结果：String.join() 转化后的字符串 : 张三,李四,王五,赵六 方式三： Collctors.joining()将分隔符、前缀和后缀作为参数。此方法将列表转换为具有给定...
[Java]String和List转换 将json串转为list String blackUids = "[1,2,3,4]"; List<Long> ids = JSONObject.parseArray(blackUids, Long.class); 将逗号分隔字符串转为list List<Long> uids = Arrays.asList(blackListUids.split(",")).stream().map(uid -> NumberUtils.toLong(uid)).collect(...
publicList<String>getWords(List<String> strSentences){ allWords =newArrayList<String>(); Iterator<String> itrTemp = strSentences.iterator();while(itrTemp.hasNext()){StringstrTemp=itrTemp.next(); allWords = Arrays.asList(strTemp.toLowerCase().split("\\s+")); }returnallWords; } ...
//字符串转list<String> String str = "测试1,测试2,测试3,测试4"; //此处为了将字符串中的空格去除做了一下操作 List<String> list= Arrays.asList(str .split(",")).stream().map(s -> (s.trim())).collect(Collectors.toList());