1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// A threading test for JSwat.
// $Author: nfiedler $ $Date: 2002-10-13 00:03:33 -0700 (Sun, 13 Oct 2002) $ $Rev: 604 $
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
/**
* Thread test bed.
*
* @author Nathan Fiedler
*/
public class thrdtest implements ActionListener, Runnable {
/**
* Create the thread test window.
*/
public thrdtest() {
JFrame frame = new JFrame("thread tester");
Container pane = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
pane.setLayout(gbl);
gbc.insets = new Insets(5, 5, 5, 5);
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.weightx = 1.0;
JButton button = new JButton("Start 10 threads");
button.setActionCommand("makeTen");
button.addActionListener(this);
gbl.setConstraints(button, gbc);
pane.add(button);
button = new JButton("Start 'ThrdA' thread");
button.setActionCommand("makeThrdA");
button.addActionListener(this);
gbl.setConstraints(button, gbc);
pane.add(button);
button = new JButton("Start 'ThrdB' thread");
button.setActionCommand("makeThrdB");
button.addActionListener(this);
gbl.setConstraints(button, gbc);
pane.add(button);
// button = new JButton("Stop test");
// button.setActionCommand("stopTest");
// button.addActionListener(this);
// gbl.setConstraints(button, gbc);
// pane.add(button);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.pack();
frame.setLocation(100, 100);
frame.show();
}
/**
* Invoked when an action occurs.
*
* @param e action event.
*/
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
if (cmd.equals("makeTen")) {
// Create 10 threads to run for a while.
for (int i = 0; i < 10; i++) {
Thread th = new Thread(this);
th.start();
}
} else if (cmd.equals("makeThrdA")) {
Thread th = new Thread(this, "ThrdA");
th.start();
} else if (cmd.equals("makeThrdB")) {
Thread th = new Thread(this, "ThrdB");
th.start();
// } else if (cmd.equals("stopTest")) {
// Thread th = new Thread(this, "Victim");
// th.start();
// th.stop();
}
}
/**
* Sleep for somewhere between 1 and 20 seconds.
*/
public void run() {
// Pick random time from 1 to 20 seconds and sleep that long.
long delay = (long) (Math.random() * 19000) + 1000;
try {
Thread.sleep(delay);
} catch (InterruptedException ie) { }
}
/**
* Main method.
*
* @param args command-line arguments.
*/
public static void main(String[] args) {
new thrdtest();
}
}
|
