android 里面使用treemap怎么使用?

package CH02;

import java.util.SortedMap;
import java.util.TreeMap;
import java.util.Set;

public class TestTreeMap
{

public static void main(String[] args)
{
   SortedMap<String,String> map=new TreeMap<String,String>();
   
   //插入键值对
   map.put("bkey","bvalue");
   map.put("dkey","dvalue");
   map.put("ckey","cvalue");
   map.put("akey","avalue");
   
   //获取键值Set
   Set<String> keySet=map.keySet(); 
   //将键值Set转成数组
   Object[] keyArray=keySet.toArray();
   //按照键值依序获取值对象
   for(int i=0; i<keyArray.length; i++)
       System.out.println( "key="+(String)keyArray[i]+"; value="+map.get((String)keyArray[i]) );
}

}

结果：

key=akey; value=avalue
key=bkey; value=bvalue
key=ckey; value=cvalue
key=dkey; value=dvalue