run In Background Thread - Java java.lang

Java examples for java.lang:Thread

Description

run In Background Thread

Demo Code

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//package com.java2s;

import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class Main {
    private static final ExecutorService workerPool = new ThreadPoolExecutor(
            0, Integer.MAX_VALUE, 60L, TimeUnit.SECONDS,
            new SynchronousQueue<Runnable>()) {

        @Override
        protected void afterExecute(Runnable r, Throwable t) {
            // We must make sure that we don't swallow exceptions, we must propagate them back.
            if ((t == null) && (r instanceof Future<?>)) {
                try {
                    Future<?> future = (Future<?>) r;
                    assert future.isDone();
                    future.get();
                } catch (CancellationException ce) {
                    t = ce;
                } catch (ExecutionException ee) {
                    t = ee.getCause();
                } catch (InterruptedException ie) {
                    Thread.currentThread().interrupt(); // ignore/reset
                }
            }
            if (t != null) {
                Thread.getDefaultUncaughtExceptionHandler()
                        .uncaughtException(Thread.currentThread(), t);
            }
        };
    };

    public static Future<?> runInBackground(Runnable run) {
        return workerPool.submit(run);
    }
}

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