Example usage for java.util.concurrent Executors newCachedThreadPool

List of usage examples for java.util.concurrent Executors newCachedThreadPool

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Introduction

In this page you can find the example usage for java.util.concurrent Executors newCachedThreadPool.

Prototype

public static ExecutorService newCachedThreadPool()

Source Link

Document

Creates a thread pool that creates new threads as needed, but will reuse previously constructed threads when they are available.

Usage

From source file:Main.java

public static void main(String[] args) {
    ExecutorService pool = Executors.newCachedThreadPool();
    Main app = new Main();
    for (int i = 0; i < 1000; i++) {
        pool.execute(app.new Adding());
    }//w ww.j av  a2  s .c  o  m
    pool.shutdown();
    while (!pool.isTerminated()) {
        System.out.println(" Is it done? : " + pool.isTerminated());
    }
    System.out.println(" Is it done? : " + pool.isTerminated());
    System.out.println("Sum is " + app.sum);
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    ExecutorService executor = Executors.newCachedThreadPool();
    Future<?> future = executor.submit(() -> {
        try {/*from w  w  w .j av  a 2 s . co  m*/
            Thread.sleep(1000);
        } catch (Exception e) {
            System.out.println("Epic fail.");
        }
    });
    System.out.println("Waiting for task to finish..");
    future.get();
    System.out.println("Task finished!");
    executor.shutdown();
}

From source file:Main.java

public static void main(String[] args) {
    PrintTask task1 = new PrintTask("thread1");
    PrintTask task2 = new PrintTask("thread2");
    PrintTask task3 = new PrintTask("thread3");

    System.out.println("Starting threads");

    ExecutorService threadExecutor = Executors.newCachedThreadPool();

    threadExecutor.execute(task1); // start task1
    threadExecutor.execute(task2); // start task2
    threadExecutor.execute(task3); // start task3

    threadExecutor.shutdown(); // shutdown worker threads

    System.out.println("Threads started, main ends\n");
}

From source file:MainClass.java

public static void main(String[] args) {
    PrintTask task1 = new PrintTask("thread1");
    PrintTask task2 = new PrintTask("thread2");
    PrintTask task3 = new PrintTask("thread3");

    System.out.println("Starting threads");

    ExecutorService threadExecutor = Executors.newCachedThreadPool();

    // start threads and place in runnable state
    threadExecutor.execute(task1); // start task1
    threadExecutor.execute(task2); // start task2
    threadExecutor.execute(task3); // start task3

    threadExecutor.shutdown(); // shutdown worker threads

    System.out.println("Threads started, main ends\n");
}

From source file:Main.java

public static void main(String[] args) {
    Map<String, String> map = new ConcurrentHashMap<String, String>();
    for (int i = 0; i < MAP_SIZE; i++) {
        map.put("key:" + i, UUID.randomUUID().toString());
    }/*from ww  w  .  ja  v a 2  s  .  c  o m*/
    ExecutorService executor = Executors.newCachedThreadPool();
    Accessor a1 = new Accessor(map);
    Accessor a2 = new Accessor(map);
    Mutator m = new Mutator(map);
    executor.execute(a1);
    executor.execute(m);
    executor.execute(a2);
}

From source file:HttpServerDemo.java

public static void main(String[] args) throws IOException {
    InetSocketAddress addr = new InetSocketAddress(8080);
    HttpServer server = HttpServer.create(addr, 0);

    server.createContext("/", new MyHandler());
    server.setExecutor(Executors.newCachedThreadPool());
    server.start();//from  w w w  . java2s  . c o m
    System.out.println("Server is listening on port 8080");
}

From source file:lohbihler.process.Test.java

public static void main(final String[] args) throws Exception {
    final ExecutorService executorService = Executors.newCachedThreadPool();

    final Process process = new ProcessBuilder("cmd").start();
    final InputReader input = new InputReader(process.getInputStream());
    final InputReader error = new InputReader(process.getErrorStream());

    executorService.execute(input);//from w ww.j  av a2  s .c  o m
    executorService.execute(error);
    final OutputStreamWriter out = new OutputStreamWriter(process.getOutputStream());

    Thread.sleep(1000);
    System.out.println("Input: " + input.getInput());
    System.out.println("Error: " + error.getInput());
    System.out.println("Alive: " + process.isAlive());
    System.out.println();

    out.append("PING 1.1.1.1 -n 1 -w 5000\r\n");
    out.flush();

    for (int i = 0; i < 7; i++) {
        Thread.sleep(1000);
        System.out.println("Input: " + input.getInput());
        System.out.println("Error: " + error.getInput());
        System.out.println("Alive: " + process.isAlive());
        System.out.println();
    }

    out.append("PING 1.1.1.1 -n 1 -w 2000\r\n");
    out.flush();

    for (int i = 0; i < 4; i++) {
        Thread.sleep(1000);
        System.out.println("Input: " + input.getInput());
        System.out.println("Error: " + error.getInput());
        System.out.println("Alive: " + process.isAlive());
        System.out.println();
    }

    process.destroy();

    executorService.shutdown();
}

From source file:ThreadPoolTest.java

public static void main(String[] args) throws Exception {
    Scanner in = new Scanner(System.in);
    System.out.print("Enter base directory (e.g. /usr/local/jdk5.0/src): ");
    String directory = in.nextLine();
    System.out.print("Enter keyword (e.g. volatile): ");
    String keyword = in.nextLine();

    ExecutorService pool = Executors.newCachedThreadPool();

    MatchCounter counter = new MatchCounter(new File(directory), keyword, pool);
    Future<Integer> result = pool.submit(counter);

    try {//from ww w. j  a v  a  2s .c om
        System.out.println(result.get() + " matching files.");
    } catch (ExecutionException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
    }
    pool.shutdown();

    int largestPoolSize = ((ThreadPoolExecutor) pool).getLargestPoolSize();
    System.out.println("largest pool size=" + largestPoolSize);
}

From source file:com.netcore.hsmart.dataconsumers.SmsDataConsumer.java

public static void main(String args[]) throws Exception {

    ExecutorService executor = Executors.newCachedThreadPool();

    for (int i = 1; i <= COUNTERS; i++) {
        Runnable worker = new SmsDataConsumerRunnable(Integer.toString(i), Integer.toString(GID));
        executor.execute(worker);/*from   ww w .ja v a2s  . co  m*/
    }
}

From source file:com.netcore.hsmart.dataconsumers.DlrDataConsumer.java

public static void main(String args[]) throws Exception {

    ExecutorService executor = Executors.newCachedThreadPool();

    for (int i = 1; i <= COUNTERS; i++) {
        Runnable worker = new DlrDataConsumerRunnable(Integer.toString(i), Integer.toString(GID));
        executor.execute(worker);/*from   w  ww.  j a  v a  2 s  .com*/
    }
}