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AtomicLong Example in MultiThread Environment

import java.util.concurrent.atomic.AtomicLong;

/**
       -- A long value that may be updated atomically. You can refer the java.util.concurrent.atomic package properties of atomic variables. 
       --  An AtomicLong is used in applications such as atomically incremented sequence numbers, and cannot be used as a replacement for a java.lang.Long. 
       --   However, this class does extend Number to allow uniform access by tools and utilities that deal with numerically-based classes.
 */
public class TestAtomicLong
{
    private static TestAtomicLong instance;
    private final AtomicLong sequenceNumber ;

    static {
        instance = new TestAtomicLong() ;
    }
    
    private TestAtomicLong(){
        sequenceNumber = new AtomicLong(1) ;
    }
    
    public void increatementSequence(){
        System.out.println(sequenceNumber.incrementAndGet() );
        System.out.println(sequenceNumber.get()) ;
    }
    
    private class ScoreCounter implements Runnable{
        
        public ScoreCounter() {
        }

        /* (non-Javadoc)
         * @see java.lang.Runnable#run()
         */
        @Override
        public void run()
        {
            sequenceNumber.incrementAndGet() ;
            System.out.println("Score Manager :" + Thread.currentThread().getName() + " updated the score : " + sequenceNumber.get()) ;
        }        
    }
    
    private void runScoreManager() {
        for(int i=0; i<10; i++) {
            ScoreCounter sc = new ScoreCounter() ;
            Thread scoreBoardManager = new Thread(sc) ;
            scoreBoardManager.start() ;            
        }        
    }
    
    public static void main(String str[]) throws Exception {
        TestAtomicLong tal = new TestAtomicLong() ;
        tal.runScoreManager() ;
    }
}

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