Call a Method Automatically

[rhm54]

I need to know how to call a method automatically every 30 seconds. Basically it would work like this:

Every 30 seconds a method would be called that simply popped an object from a queue.

[hardwired]

Make up a background thread in a Runnable. Put a while loop in the run method and sleep for 30 seconds before calling your method.

[rhm54]

Thank you for your help but you are speaking greek to me. I have no clue how to accomplish that. I understand the while statement that will cause it to continually run but the rest I don't understand.

[hardwired]

Code:

public class Test {
    public static void main(String[] args) {
        new Test().start();
    }

    private void start() {
        Thread thread = new Thread(runner);
        // Useful for/in swing applications:
        thread.setPriority(Thread.NORM_PRIORITY);
        thread.start();
    }

    private Runnable runner = new Runnable() {
        // Or you could have the enclosing class
        // implement Runnable and put this method
        // in as an instance method (like this).
        public void run() {
            int count = 0;
            while(true) {
                try {
                    // Use 3 second delay to prevent boredom.
                    // 30 seconds delay = 30*1000 millis
                    Thread.sleep(3*1000);
                } catch(InterruptedException e) {
                    System.out.println("interrupt");
                    break;
                }
                method(++count);
            }
        }
    };

    private void method(int count) {
        System.out.println(count);
    }
}

[rhm54]

Alright this is what I did but it doesn't appear to work. Can anyone see any errors in the code?

Code:

public void removeFromQ() {
            while(true) {
                try {
                	Thread.sleep(30*1000);
                	if(listSize() == 0){
                		System.out.println("Nothing to Print");
                	}
                	else{
                		printdata temp = (printdata)getNode(0);
                		System.out.println("Printing " + temp.getPrint() + " for user " + temp.getUser());
                		if (temp.getUser()== 'A'){
                			ACount--;
                		}
                		if (temp.getUser()== 'B'){
                			BCount--;
                		}
                		if (temp.getUser()== 'C'){
                			CCount--;
                		}
                		removeNode(0);
                	}
                    // Use 3 second delay to prevent boredom.
                    // 30 seconds delay = 30*1000 millis
                    
                } catch(InterruptedException e) {
                    System.out.println("interrupt");
                    break;
                }
            }
               

}