44 lines
1.5 KiB
Java
44 lines
1.5 KiB
Java
// concurrency/DaemonFromFactory.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// Using a Thread Factory to create daemons.
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import java.util.concurrent.*;
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import onjava.*;
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public class DaemonFromFactory implements Runnable {
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@Override
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public void run() {
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try {
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while(true) {
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TimeUnit.MILLISECONDS.sleep(100);
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System.out.println(
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Thread.currentThread() + " " + this);
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}
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} catch(InterruptedException e) {
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System.out.println("Interrupted");
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}
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}
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public static void main(String[] args) throws Exception {
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ExecutorService exec = Executors.newCachedThreadPool(
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new DaemonThreadFactory());
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for(int i = 0; i < 10; i++)
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exec.execute(new DaemonFromFactory());
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System.out.println("All daemons started");
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TimeUnit.MILLISECONDS.sleep(500); // Run for a while
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}
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}
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/* Output: (First 10 Lines)
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All daemons started
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Thread[Thread-2,5,main] DaemonFromFactory@1bb3d5e
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Thread[Thread-8,5,main] DaemonFromFactory@12aef8a
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Thread[Thread-9,5,main] DaemonFromFactory@b5ecf4
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Thread[Thread-0,5,main] DaemonFromFactory@3e3d06
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Thread[Thread-1,5,main] DaemonFromFactory@425a41
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Thread[Thread-5,5,main] DaemonFromFactory@4f61c0
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Thread[Thread-4,5,main] DaemonFromFactory@53f1ba
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Thread[Thread-6,5,main] DaemonFromFactory@baf372
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Thread[Thread-3,5,main] DaemonFromFactory@1437b8f
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...
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*/
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