- ArrayList<String> list = new ArrayList<>();
- list.add("b");
- list.add("a");
- list.add("d");
- list.forEach(item -> System.out.print(item));
- HashMap<String, String> map = new HashMap<>();
- map.put("1", "1");
- map.put("2", "2");
- map.put("3", "3");
- map.forEach((String key, String value) -> {
- System.out.println("key-->>" + key + "value--->>" + value);
- });
来源: http://www.bubuko.com/infodetail-2644506.html