26 lines
686 B
Java
26 lines
686 B
Java
// concurrency/EvenSupplier.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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// When threads collide.
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// {TimeOutDuringTesting} (on single-core machines)
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public class EvenSupplier extends IntSupplier {
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private int currentEvenValue = 0;
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@Override
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public int next() {
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++currentEvenValue; // Danger point here!
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++currentEvenValue;
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return currentEvenValue;
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}
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public static void main(String[] args) {
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EvenChecker.test(new EvenSupplier());
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}
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}
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/* Output:
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Press Control-C to exit
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1305 not even!
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1307 not even!
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1303 not even!
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*/
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