package Threading;

import java.util.ArrayList;

import java.util.List;

public final class IntPrinter {

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

if (args.length != 1) {

System.out.println("Usage: Main <number of threads>");

return;

}

int n = Integer.parseInt(args[0]);

List <Thread> threads = new ArrayList<>(n);

for (int i = 0; i < n; i++) {

threads.add(new Thread(new IntRunner(i)));

}

for (Thread thread : threads) thread.start();

for (Thread thread : threads) thread.join();

}

public static final class IntRunner implements Runnable {

private final int value;

IntRunner(int value) {

this.value = value;

}

@Override

public void run() {

System.out.println("Thread #" + Thread.currentThread().getId() + " printed " + value);

}

}

}