Map的有序性_有序的map集合有哪些

 public static void main(String[] args) {

        /**
     * Constructs an empty insertion-ordered <tt>LinkedHashMap</tt> instance
     * with the default initial capacity (16) and load factor (0.75).
     */
        Map<String,Integer> linkedMap = new LinkedHashMap();
        linkedMap.put("a",14);
        linkedMap.put("c",18);
        linkedMap.put("x",19);

/**
    默认排序,支持comparable排序方式自定义
*/
        Map<String,Integer> treeMap = new TreeMap();
        treeMap.put("a",11);
        treeMap.put("x",10);
        treeMap.put("c",9);
        treeMap.put("b",100);

    /**
     * Constructs an empty <tt>HashMap</tt> with the default initial capacity
     * (16) and the default load factor (0.75).
     */
        Map<String,Integer> hashMap = new HashMap<>();
        hashMap.put("a",11);
        hashMap.put("x",10);
        hashMap.put("e",9);
        hashMap.put("b",100);
        for (Map.Entry<String, Integer> entry : linkedMap.entrySet()){
            System.out.println(entry.getKey()+"===="+entry.getValue());
        }
        System.out.println("========我是分割线=======");
        for (Map.Entry<String, Integer> entry : treeMap.entrySet()){
            System.out.println(entry.getKey()+"===="+entry.getValue());
        }
        System.out.println("========我是分割线=======");
        for (Map.Entry<String, Integer> entry : hashMap.entrySet()){
            System.out.println(entry.getKey()+"===="+entry.getValue());
        }
        //System.out.println(result);
    }