22.9

Posted 2020-08-22 功夫茶茶

 1 import java.util.HashMap;
 2 import java.util.Map;
 3 import java.util.Set;
 4 import java.util.StringTokenizer;
 5 import java.util.TreeMap;
 6 
 7 public class S22_9 {
 8 
 9     public static void main(String[] args) {
10         // TODO Auto-generated method stub
11         String myText = "today is a good day! I am happy to be a man in the world." +
12         "since the day I relize I am good to study by myself?";
13         
14         StringTokenizer strToken = new StringTokenizer(myText," .?!;,");
15         HashMap<String,Integer> myHashMap = new HashMap<String,Integer>();
16         while(strToken.hasMoreTokens()){
17              String tempStr = strToken.nextToken().toLowerCase();
18              if(myHashMap.get(tempStr) == null)
19                  myHashMap.put(tempStr, 1);
20              else {
21                  int value = myHashMap.get(tempStr).intValue();
22                  value++;
23                  myHashMap.put(tempStr, value);
24              }
25          }
26         
27         Set entrySet = new TreeMap(myHashMap).entrySet();
28         
29         for(Object myHash:entrySet)
30         {
31             System.out.println(myHash);
32         }
33     }
34 
35 }

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