对map进行排序
public class TreeMapTest {
public static void main(String[] args)
{
Map<String, String> map = new TreeMap<String,
String>(
new Comparator<String>()
{
public int compare(String obj1, String obj2)
{
// 降序排序
return
obj2.compareTo(obj1);
}
});
map.put("c", "ccccc");
map.put("a", "aaaaa");
map.put("b",
"bbbbb");
map.put("d", "ddddd");
Set<String>
keySet = map.keySet();
Iterator<String> iter =
keySet.iterator();
while (iter.hasNext()) {
String key
= iter.next();
System.out.println(key + ":" +
map.get(key));
}
}
}