import java.util.Scanner;
public class Test {
private static final Object LOCK = new Object();
public static void main(String[] args) {
final Thread thread = new Thread() {
public void run() {
while (true) {
synchronized (LOCK) {
System.out.println("Looped at: " + System.currentTimeMillis());
try {
LOCK.wait();
} catch (Exception ignored) {
ignored.printStackTrace();
}
}
}
}
};
thread.start();
final Scanner in = new Scanner(System.in);
while (true) {
if (in.nextLine().equals("loop")) {
synchronized (LOCK) {
LOCK.notifyAll();
}
}
}
}
}