class UsaLong {
  long num = -100;
  public void incrementaLong(){
    while (true) {
      num++;
      if (num > 99) 
        num = -100;
    }
  }
  public long verificaLong(){
    long temp = 0;
    while (temp >= -100 && temp <= 100)
      temp = num;
    return temp;
    }
}

class Objeto1 implements Runnable{
    UsaLong my;
    public Objeto1(UsaLong l){
         my = l;
    }
    public void run() {
        my.incrementaLong();
    }
}

class Objeto2 implements Runnable{
    UsaLong my;
    public Objeto2 (UsaLong l){
         my = l;
    }
    public void run() {
        System.out.println(my.verificaLong());
        System.exit(0);
    }
}
public class Principal {
    public static void main(String a[]){
        System.out.println("Comecei...");
        UsaLong l = new UsaLong();
        Objeto1 obj1 = new Objeto1(l);
        Objeto2 obj2 = new Objeto2(l);
        Thread t1    = new Thread(obj1);
        Thread t2    = new Thread(obj2);
        t1.start();
        t2.start();
    }
}