37 lines
1.0 KiB
Java
37 lines
1.0 KiB
Java
// lowlevel/EvenChecker.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://OnJava8.com for more book information.
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import java.util.concurrent.*;
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public class EvenChecker implements Runnable {
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private IntSupplier generator;
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private final int id;
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public EvenChecker(IntSupplier g, int ident) {
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generator = g;
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id = ident;
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}
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@Override
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public void run() {
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while(!generator.isCanceled()) {
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int val = generator.next();
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if(val % 2 != 0) {
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System.out.println(val + " not even!");
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generator.cancel(); // Cancels all EvenCheckers
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}
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}
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}
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// Test any type of IntSupplier:
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public static void test(IntSupplier gp, int count) {
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System.out.println("Press Control-C to exit");
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ExecutorService es = Executors.newCachedThreadPool();
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for(int i = 0; i < count; i++)
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es.execute(new EvenChecker(gp, i));
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es.shutdown();
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}
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// Default value for count:
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public static void test(IntSupplier gp) {
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test(gp, 10);
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}
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}
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