38 lines
1.1 KiB
Java
38 lines
1.1 KiB
Java
// concurrency/SelfManaged.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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// A Runnable containing its own driver Thread.
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public class SelfManaged implements Runnable {
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private int countDown = 5;
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private Thread t = new Thread(this);
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public SelfManaged() { t.start(); }
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@Override
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public String toString() {
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return Thread.currentThread().getName() +
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"(" + countDown + "), ";
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}
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@Override
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public void run() {
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while(true) {
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System.out.print(this);
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if(--countDown == 0)
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return;
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}
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}
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public static void main(String[] args) {
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for(int i = 0; i < 5; i++)
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new SelfManaged();
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}
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}
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/* Output:
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Thread-0(5), Thread-4(5), Thread-3(5), Thread-1(5),
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Thread-2(5), Thread-2(4), Thread-2(3), Thread-1(4),
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Thread-3(4), Thread-4(4), Thread-0(4), Thread-4(3),
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Thread-3(3), Thread-1(3), Thread-2(2), Thread-1(2),
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Thread-3(2), Thread-4(2), Thread-0(3), Thread-4(1),
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Thread-3(1), Thread-1(1), Thread-2(1), Thread-0(2),
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Thread-0(1),
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*/
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