java thread - classic hand problems

Package Penalty for jd1908_corejava.ch15.work; 

// thread classic question - hand problems 
public  class Race {
     public  static  void main (String [] args) { 
        RabbitAndTurtle The Rabbit = new new RabbitAndTurtle (); 
        rabbit.setName ( "Bunny" ); 
        turtle RabbitAndTurtle = new new RabbitAndTurtle (); 
        turtle.setName ( "turtle" ); 
        rabbit.start (); 
        turtle.start (); 

    } 
} 

class RabbitAndTurtle the extends the Thread {
     Private  intNUM;
     // boolean type default initial value is false 
    Private  static  boolean Flag;
     // After the run is finished thread will die, closed
     // yield (), the release of resources, run back to the top 
    @Override
     public  void run () { 

        the while (NUM <100 ) {
             IF (In Flag) {
                 // thread termination 
                BREAK ; 
            } 
            IF (Math.random () <0.3 && Thread.currentThread () getName () the equals ( "rabbit.". )) { 
                NUM + = 2 ; 
                System.out.println ( "rabbit run" + NUM);
                 IF(NUM == 100 ) { 
                    System.out.println ( "Rabbit win" );
                     BREAK ; 
                } 
                to Thread.yield (); 
            } 
            IF . (Math.random ()> 0.3 && Thread.currentThread () getName (). equals ( "turtle" )) { 
                NUM + =. 1 ; 
                System.out.println ( "tortoise ran" + NUM);
                 IF (NUM == 100 ) { 
                    System.out.println ( "tortoise win" );
                     BREAK ; 
                } 
                to Thread.yield (); 
            } 

        }
        if (num == 100) {
            flag = true;
        }
    }
}

Note: The two threads are independent, but the flag is shared

Do not have the same type of object is instantiated static resources are shared!