Thread Race probelm

ExampleThree.java

public class ExampleThree{
	
	private static int bal=0;	

	 public static void updateBal(){
	 	bal+=10;
	 	bal-=10;
	 }

	 public static void monitorBal(){
	 	if(bal!=0){
	 		System.out.println(bal);
	 	}
	 }

	 public static void updateBalThread(){
	 	Thread t = new Thread( () -> {

	 			while(true){
	 				updateBal();
	 			}

	 		});
	 	t.start();
	 }

	 public static void monitorBalThread(){
	 	Thread t = new Thread( ()-> {

	 		while(true){
	 			monitorBal();
	 		}

	 	});
	 	t.start();
	 }

	 	public static void main(String[] args) {
	 		
	 		updateBalThread();
	 		monitorBalThread();
	 	}
	 

}