map集合的遍历

Posted 2020-12-28 wtbk

public class Demo12 {
    public static void main(String[] args){
        HashMap<String, String> map = new HashMap<>();
        map.put("杨过","小龙女");
        map.put("五阿哥","小燕子");

        //遍历
        //获取所有的键
        Set<String> key = map.keySet();
        //遍历键的集合，获取到每一个键
        for (String x:key){
            //根据键找值
            String value = map.get(x);
            System.out.println(x+"-----"+value);
        }
    }
}