22 lines
603 B
Java
22 lines
603 B
Java
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// lowlevel/AtomicSerialNumbers.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
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AtomicSerialNumbers extends SerialNumbers {
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private AtomicInteger serialNumber =
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new AtomicInteger();
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public synchronized int nextSerialNumber() {
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return serialNumber.getAndIncrement();
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}
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public static void main(String[] args) {
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SerialNumberChecker.test(
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new AtomicSerialNumbers());
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}
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}
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/* Output:
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No duplicates detected
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*/
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