如何使用TreeMap类的contains key方法检查TreeMap对象是否包含特定键

 

import java.util.TreeMap;

 
 /*
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  时   代     Java  公  众  号 - nowjava.com
 */

public class Main {

 

  public static void main(String[] args) {

   

    //create TreeMap object

    TreeMap treeMap = new TreeMap();

   

    //add key value pairs to TreeMap

    treeMap.put("1","One");

    treeMap.put("2","Two");

    treeMap.put("3","Three");

   

    boolean blnExists =