判断TreeMap中是否包含某个值，判断TreeMap包含,package cn.o

判断TreeMap中是否包含某个值，判断TreeMap包含,package cn.o

package cn.outofmemory.snippets.core;import java.util.TreeMap;public class CheckValueTreeMap {  public static void main(String[] args) {    // Create a TreeMap and populate it with elements    TreeMap treeMap = new TreeMap();    treeMap.put("key_1","element_1");    treeMap.put("key_2","element_2");    treeMap.put("key_3","element_3");    // boolean containsValue(Object key) returns true if the value is mapped to one or more keys otherwise false.    boolean exists = treeMap.containsValue("element_2");    System.out.println("element_2 exists in TreeMap ? : " + exists);  }}

输出：

element_2 exists in TreeMap ? : true