43 lines
1.1 KiB
Java
43 lines
1.1 KiB
Java
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import java.util.List;
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import java.util.concurrent.Future;
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import java.util.concurrent.Callable;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ExecutorService;
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import static java.util.Arrays.asList;
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public class SommePlus {
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static class Sum implements Callable<Long> {
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private final long from;
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private final long to;
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Sum(long from, long to) {
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this.from = from;
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this.to = to;
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}
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@Override
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public Long call() {
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long acc = 0;
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for (long i = from; i <= to; i++) {
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acc = acc + i;
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}
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return acc;
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}
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}
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public static void main(String[] args) throws Exception {
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ExecutorService executor = Executors.newFixedThreadPool(2);
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List<Future<Long>> results = executor.invokeAll(asList(
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new Sum(0, 10), new Sum(100, 1_000), new Sum(10_000, 1_000_000)
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));
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executor.shutdown();
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for (Future<Long> result : results) {
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System.out.println(result.get());
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}
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}
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}
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