Java中map.getOrDefault()方法的使用

HashMap<String, String> map = new HashMap<>();

map.put("name", "cookie");

map.put("age", "18");

map.put("sex", "女");

String name = map.getOrDefault("name", "random");

System.out.println(name);// cookie，map中存在name,获得name对应的value

int score = map.getOrDefault("score", 80);

System.out.println(score);// 80，map中不存在score,使用默认值80

在这里看到的: https://blog.csdn.net/m0_37827190/article/details/106223703?utm_medium=distribute.pc_category.none-task-blog-hot-11.nonecase&depth_1-utm_source=distribute.pc_category.none-task-blog-hot-11.nonecase&request_id=###

 

来源：oschina

链接：https://my.oschina.net/u/4183858/blog/4286336