TreeMap类型添加数据

package com.test.Test11;import java.util.*;public class Test02 {public static void main(String[] args) {/** 增加：put(K key,V value)* 删除：clear() remove(Object key)* 修改：* 查看：entrySet() get(Object key) keySet()  size() values()* 判断：containsKey(Object key) containsValue(Object value)* equals(Object o) isEmpty()* *///TreeMap 唯一，有序(按升序或者降序排序)TreeMap<String, Integer> map = new TreeMap<>();map.put("blili", 1234);map.put("alili", 2345);map.put("blili", 5467);map.put("clili", 5678);map.put("dlili", 2345);System.out.println(map.size()); //4(上面的添加了5对数据，只出来4对数据)System.out.println(map); //{alili=2345, blili=5467, clili=5678, dlili=2345}}
}