List初始化
List<String> name = Arrays.asList("xxx","yyy","zzz"); //或者 List<String> name =new ArrayList<>(Arrays.asList("xxx","yyy","zzz"));
不过这样的话这个list的size就固定了,不能再add了,要注意。
List除去重复的项
List<String> list = Arrays.asList("abc", "hello", "hello", "world"); List<String> distinctList = list.stream().distinct().collect(Collectors.toList()); System.out.println(String.join(",", distinctList));
输出 abc,hello,world