60 Thread Safety in Java.txt

import java.util.concurrent.atomic.AtomicInteger;

class Counter1
{
	AtomicInteger count= new AtomicInteger(); 
	
	public void increment()
	{
		count.incrementAndGet();
	}
}

public class Test1 
{
	public static void main(String[] args) throws Exception
	{
		Counter1 c = new Counter1();
		
		Thread t1 = new Thread(new Runnable() 
				{
			    	public void run() 
			    	{
			    		for(int i=1;i<=1000;i++)
			    		{
			    			c.increment();
			    		}
			    		
			    	}
			    });
		
		Thread t2 = new Thread(new Runnable() 
		{
	    	public void run() 
	    	{
	    		for(int i=1;i<=1000;i++)
	    		{
	    			c.increment();
	    		}
	    		
	    	}
	    });
		
		t1.start();
		t2.start();
		
		t1.join();
		t2.join();
	
		System.out.println(c.count);
		
	}

}