Create a simple queue with Java threads

Question

I\'m trying to create a simple queue with Java Thread that would allow a loop, say a for loop with 10 iterations, to iterate n (< 10) threads at a time and wait until tho

Answer 1

Crate Logger.class :

public class Logger extends Thread {
    List queue = new ArrayList();
    private final int MAX_QUEUE_SIZE = 20;
    private final int MAX_THREAD_COUNT = 10;

    @Override
    public void start() {
        super.start();
        Runnable task = new Runnable() {
            @Override
            public void run() {
                while (true) {
                    String message = pullMessage();
                    Log.d(Thread.currentThread().getName(), message);
                    // Do another processing
                }
            }
        };
        // Create a Group of Threads for processing
        for (int i = 0; i < MAX_THREAD_COUNT; i++) {
            new Thread(task).start();
        }
    }

    // Pulls a message from the queue
    // Only returns when a new message is retrieves
    // from the queue.
    private synchronized String pullMessage() {
        while (queue.isEmpty()) {
            try {
                wait();
            } catch (InterruptedException e) {
            }
        }
        return queue.remove(0);
    }

    // Push a new message to the tail of the queue if
    // the queue has available positions
    public synchronized void pushMessage(String logMsg) {
        if (queue.size() < MAX_QUEUE_SIZE) {
            queue.add(logMsg);
            notifyAll();
        }

    }
}

Then insert bellow code in your main class :

Logger logger =new Logger();
logger.start();
for ( int i=0; i< 10 ; i++) {
    logger.pushMessage(" DATE : "+"Log Message #"+i);
}