19 lines
531 B
Java
19 lines
531 B
Java
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// concurrent/GuardedIDField.java
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// (c)2017 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://OnJava8.com for more book information.
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import java.util.concurrent.atomic.*;
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public class GuardedIDField implements HasID {
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private static AtomicInteger counter =
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new AtomicInteger();
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private int id = counter.getAndAdd(1);
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public int getID() { return id; }
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public static void main(String[] args) {
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IDChecker.test(GuardedIDField::new);
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}
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}
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/* Output:
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0
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*/
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