122 lines
4.7 KiB
HTML
122 lines
4.7 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Suspend a thread using Java" />
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<meta name="abstract" content="This example shows a Java program suspending an actively running thread." />
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<meta name="description" content="This example shows a Java program suspending an actively running thread." />
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<meta name="DC.Relation" scheme="URI" content="rzahwsusco.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzahwex6-ex6rx" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Suspend a thread using Java</title>
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</head>
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<body id="rzahwex6-ex6rx"><a name="rzahwex6-ex6rx"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Suspend a thread using Java</h1>
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<div><p>This example shows a Java™ program suspending an actively running
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thread.</p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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<div class="example"> <pre>/*
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FileName: ATEST14.java
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The output of this example is as follows:
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Entered the testcase
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Create a thread
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Start the thread
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Wait a bit until we 'realize' the thread needs to be suspended
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Thread: Entered
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Thread: Active processing
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Thread: Active processing
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Suspend the thread
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Wait a bit until we 'realize' the thread needs to be resumed
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Resume the thread
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Thread: Active processing
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Wait for the thread to complete
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Thread: Active processing
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Thread: Active processing
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Thread: Completed
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Testcase completed
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*/
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import java.lang.*;
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public class ATEST14 {
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static class theThread extends Thread {
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public void run() {
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int loop=6;
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System.out.print("Thread: Entered\n");
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while (--loop > 0) {
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System.out.print("Thread: Active processing\n");
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safeSleep(1000, "Thread: sleep interrupted\n");
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}
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System.out.print("Thread: Completed\n");
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}
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}
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public static void main(String argv[]) {
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System.out.print("Entered the testcase\n");
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System.out.print("Create a thread\n");
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theThread t = new theThread();
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System.out.print("Start the thread\n");
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t.start();
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System.out.print("Wait a bit until we 'realize' the thread needs to be suspended\n");
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safeSleep(2000, "Main first sleep interrupted\n");
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System.out.print("Suspend the thread\n");
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t.suspend();
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System.out.print("Wait a bit until we 'realize' the thread needs to be resumed\n");
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safeSleep(2000, "Main second sleep interrupted\n");
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System.out.print("Resume the thread\n");
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t.resume();
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System.out.print("Wait for the thread to complete\n");
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try {
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t.join();
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}
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catch (InterruptedException e) {
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System.out.print("Join interrupted\n");
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}
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System.out.print("Testcase completed\n");
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System.exit(0);
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}
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public static void safeSleep(long milliseconds, String s) {
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try {
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Thread.sleep(milliseconds);
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}
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catch (InterruptedException e) {
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System.out.print(s);
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}
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}
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}</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahwsusco.htm" title="It is sometimes useful to stop a thread temporarily from processing in your application. When you suspend a thread, the state of the thread, including all the attributes and locks held by the thread, is maintained until that thread is resumed.">Suspend a thread</a></div>
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</div>
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</div>
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</body>
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</html>
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