ifstopped.html
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<TITLE>Determining When a Thread Has Finished
(Java Developers Almanac Example)
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<META CONTENT="Patrick Chan" NAME="AUTHOR">
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<h3>
e94.
Determining When a Thread Has Finished</h3>
This example demonstrates a few ways to determine whether or not a
thread has returned from its <code>run()</code> method.
<pre>
// Create and start a thread
Thread thread = new <font color="#0066ff"><i>MyThread</i></font>();
thread.start();
// Check if the thread has finished in a non-blocking way
if (thread.isAlive()) {
// Thread has not finished
} else {
// Finished
}
// Wait for the thread to finish but don't wait longer than a
// specified time
long delayMillis = <font color="#0066ff"><i>5000</i></font>; // 5 seconds
try {
thread.join(delayMillis);
if (thread.isAlive()) {
// Timeout occurred; thread has not finished
} else {
// Finished
}
} catch (InterruptedException e) {
// Thread was interrupted
}
// Wait indefinitely for the thread to finish
try {
thread.join();
// Finished
} catch (InterruptedException e) {
// Thread was interrupted
}
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Related Examples
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e92. <a class="eglink" href="BasicThread.html?l=rel">
Creating a Thread
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e93. <a class="eglink" href="StopThread.html?l=rel">
Stopping a Thread
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e95. <a class="eglink" href="Sleep.html?l=rel">
Pausing the Current Thread
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e96. <a class="eglink" href="PauseThread.html?l=rel">
Pausing a Thread
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e97. <a class="eglink" href="IfLocked.html?l=rel">
Determining If the Current Thread Is Holding a Synchronized Lock
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e98. <a class="eglink" href="DaemonThread.html?l=rel">
Allowing an Application with Live Threads to Exit
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e99. <a class="eglink" href="ListThreads.html?l=rel">
Listing All Running Threads
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e100. <a class="eglink" href="TLocal.html?l=rel">
Using a Thread-local Variable
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e101. <a class="eglink" href="GetStack.html?l=rel">
Getting the Stack Trace of an Exception
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e102. <a class="eglink" href="WorkQueue.html?l=rel">
Implementing a Work Queue
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See also:
<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Arrays">
Arrays
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Assertions">
Assertions
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Classes">
Classes
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Commands">
Commands
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Numbers">
Numbers
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Objects">
Objects
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Strings">
Strings
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#System%20Properties">
System Properties
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