[Java] 如何對HashTable裡的值做sort

public static Hashtable<String,Integer> getTablesInfo() {
    Hashtable<String,Integer> tables = new Hashtable<String,Integer>();
    tables.put("AAA", 5);
    tables.put("BBB", 4);
    tables.put("CCC", 7);
    tables.put("DDD", 2);
    tables.put("EEE", 1);
    return tables;
}
   
public static void sort(Hashtable<String, Integer> t){
    //Transfer as List and sort it
    ArrayList<Map.Entry<String, Integer>> l = new ArrayList(t.entrySet());
    Collections.sort(l, new Comparator<Map.Entry<String, Integer>>(){
        public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
            return o1.getValue().compareTo(o2.getValue());
        }});
   
    System.out.println(l);
}
   
public static void main (String[] args) {
       
        Hashtable<String,Integer> tables = getTablesInfo();
        
        sort(tables);
}

Reference: 
[1] How to sort a Java Hashtable?