转：java写一个方法实现统计一条英文语句忠每个单词的个数

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.swing.JOptionPane;
public class Test91 {
 public static void main(String[] args) {
  String s = JOptionPane.showInputDialog(null, "请输入句子:");
  String[] ss = s.trim().split(" ");
  Map map = new HashMap();
  for (int i = 0; i < ss.length; i++) {
   int count = 0;
   for (int j = 0; j < ss.length; j++) {
    if (ss[i].equals(ss[j])) {
     count = count + 1;
    }
   }
   //为了不打印重复的，放入map中去掉重复的
   map.put(ss[i], count);
  }
//遍历map，打印包含的单词和个数
  Set key=map.keySet();
  for (Iterator iterator = key.iterator(); iterator.hasNext();) {
   String name = (String) iterator.next();
   String count2=map.get(name).toString();
   System.out.println(name+"有 "+count2+" 个");
  }
 }
}