weixin_43866528的博客

Map<String, String>类型进行从大到小排序 Map<String, String> result = mapSumData.entrySet().stream() .sorted((e1, e2) -> Float.valueOf(e2.getValue()).compareTo(Float.valueOf(e1.getValue()))) .collect(Collectors.toMap(M

java8 按照list中对象的的某个属性排序 List<User> alList = new ArrayList<User>(); for (int i = 11; i > 0; i--) { User user = new User(); user.setId(String.valueOf(i)); alList.add(user); } List<User> sortPoint = alList.stream().sorted

String转List String nameArr = "张三, 李四, 王五"; List<String> alName = Arrays.asList(nameArr .split(",")); List转String List<String> alName = Arrays.asList("张三, 李四, 王五"); String nameArr = alName.stream().collect(Collectors.joining(",")); ...