import java.util.*;
public class ContohThread {

    public static void main(String[] args){
		ThreadA a = new ThreadA();
        ThreadB b = new ThreadB();
        b.start();
		a.start();
    }
}

 class ThreadA extends Thread{

    public void run(){
        synchronized(this){
            for(int i=1; i<=100 ; i++){
                System.out.println(i);
				try{
					Thread.sleep(1000);
				}catch(Exception e){

				}
            }
        }
    }
}

class ThreadB extends Thread{
	Scanner in = new Scanner(System.in);
    public void run(){
        synchronized(this){
			while(!in.hasNextLine());
			System.out.println("ada enter");
			System.out.println("Press enter to continue");
			in.nextLine();
        }
    }
}