JAVA中MAP转LIST

@Test

public  void  testMap2List()  throws  Exception{

     Map<String, String> map =  new  HashMap<String, String>();

     map.put( "1" ,  "AA" );

     map.put( "2" ,  "BB" );

     map.put( "3" ,  "CC" );

     map.put( "4" ,  "DD" );

 

     Collection<String> valueCollection = map.values();

     final  int  size = valueCollection.size();

 

     List<String> valueList =  new  ArrayList<String>(valueCollection);

 

     String[] valueArray =  new  String[size];

     map.values().toArray(valueArray);

}