wtfiswrong.java

gistfile1.txt

//package mcp;
public class outpit {

	static int counter = 0;

 	public static void main(String[] args) throws InterruptedException {
		if (args.length < 1) {
			throw new IllegalArgumentException("Usage: Ex1q9 N");
		}
		Integer numberOfThreads = Integer.valueOf(args[0]);

		Thread[] threads = new Thread[numberOfThreads];
		long start = System.currentTimeMillis();

 
		for (int i = 0; i < numberOfThreads; i++) {
			Thread thread = new Thread(new Runnable() {

				@Override
				public void run() {
					
					
					for (int j = 0; j < 5; j++) {

						int localCounter = counter;

						localCounter += 1;

						counter = localCounter;
						System.out.println(String.format("counter=%d thread=%d", counter, i));
					}
				}
			});
			thread.start();
			threads[i] = thread;
		} 
		for (Thread thread : threads) {
			thread.join();
		}
 		long duration = System.currentTimeMillis() - start;
		System.out.println(String.format("counter=%d duration=%d", counter, duration));
	}
}