HashMapTest


1   package org.jgroups.tests;
2   
3   //import gnu.trove.TLongObjectHashMap;
4   //import gnu.trove.THashMap;
5   
6   import java.util.HashMap  ;
7   import java.util.Map  ;
8   import java.util.TreeMap  ;
9   
10  /**
11   * @author Bela Ban
12   * @version $Id: HashMapTest.java,v 1.1 2005/04/14 04:49:32 belaban Exp $
13   */
14  public class HashMapTest {
15  
16  
17      public static void main(String  [] args) {
18          int num=10000;
19          for(int i=0; i < args.length; i++) {
20              if(args[i].equals("-num")) {
21                  num=Integer.parseInt(args[++i]);
22                  continue;
23              }
24              System.out.println("HashMapTest [-num <num>] [-help]");
25          }
26          HashMapTest t=new HashMapTest();
27          t.start(new HashMap  (), num);
28          t.start(new TreeMap  (), num);
29          //t.start2(new TLongObjectHashMap(), num);
30          //t.start3(new THashMap(), num);
31          System.out.println("");
32          t.start(new HashMap  (), num);
33          t.start(new TreeMap  (), num);
34          //t.start2(new TLongObjectHashMap(), num);
35          //t.start3(new THashMap(), num);
36      }
37  
38     /* private void start3(THashMap m, int num) {
39          long start, stop;
40  
41          start=System.currentTimeMillis();
42          for(int i=0; i < num; i++) {
43              m.put(new Long(i), "bla");
44          }
45  
46          stop=System.currentTimeMillis();
47          System.out.println("Took " + (stop-start) + "ms to insert " + m.size() + " elements into " + m.getClass().getName());
48          m.clear();
49      }
50  
51      private void start2(TLongObjectHashMap m, int num) {
52          long start, stop;
53  
54          start=System.currentTimeMillis();
55          for(int i=0; i < num; i++) {
56              m.put(i, "bla");
57          }
58  
59          stop=System.currentTimeMillis();
60          System.out.println("Took " + (stop-start) + "ms to insert " + m.size() + " elements into " + m.getClass().getName());
61          m.clear();
62      }*/
63  
64      private void start(Map   m, int num) {
65          long start, stop;
66  
67          start=System.currentTimeMillis();
68          for(int i=0; i < num; i++) {
69              m.put(new Long  (i), "bla");
70          }
71  
72          stop=System.currentTimeMillis();
73          System.out.println("Took " + (stop-start) + "ms to insert " + m.size() + " elements into " + m.getClass().getName());
74          m.clear();
75      }
76  }
77
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