向TreeMap添加和获取值

 

import java.util.TreeMap;

 

public class Main {/**from N o  w  J a v a . c o m - 时  代  Java**/

 

  public static void main(String[] args) {

    TreeMap treeMap = new TreeMap();

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

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

    Object obj = treeMap.get("Two");

    System.out.println(obj);  

  }

}