Java Map 排序取数

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 1 import java.util.Iterator;
 2 import java.util.Set;
 3 import java.util.TreeMap;
 4 
 5 public class Test1 {
 6 
 7  /**
 8   * @param args
 9 */
10  public static void main(String[] args) {
11   TreeMap<Integer,String> maps = new TreeMap<Integer,String>();
12   maps.put(3, "王五");  
13   maps.put(1, "张三");
14   maps.put(2, "李四");
15   maps.put(4, "赵六");
16   
17  // int size=maps.size();
18  // int count=0;
19   Set set=maps.keySet();
20   Iterator iter=set.iterator();
21   while(iter.hasNext()){
22    Object key=iter.next();
23   // if(count>=(size-2)){
24     System.out.println(key+" "+maps.get(key));
25   // }
26 // count++;
27   }
28  }
29 }