HashMap--EntrySet 泛型

@Test
    public void test(){
        Map<String,Integer> myMap = new LinkedHashMap<String,Integer>();
        myMap.put("s1", 1);
        myMap.put("s2", 2);
        myMap.put("s3", 3);
        
        Set<Map.Entry<String, Integer>> entrySet = myMap.entrySet();
        for(Map.Entry<String, Integer> e:entrySet){
            String key = e.getKey();
            int  value = e.getValue();
            System.out.println(key+":"+value);
        }
        
    }