java中英文排序代码,用TreeMap实现

在中文排序中发现不能正排序，这是字符国际化问题引起的，可以实现Comparator接口，使用Collator类来解决! ... import java.text.Collator; public class CollatorComparator implements Comparator { Collator collator = Collator.getInstance();   public int compare(Object element1, Object element2) {     CollationKey key1 = collator.getCollationKey(element1.toString());     CollationKey key2 = collator.getCollationKey(element2.toString());     return key1.compareTo(key2); } } 运行：   TreeMap map = new TreeMap(new CollatorComparator());     map.put("1", "1");     map.put("华", "华");     map.put("花", "花");     Collection col = map.values();     Iterator it = col.iterator();     while(it.hasNext()){       System.out.println(it.next());     }