Singleton pattern

/**
 * Test client class for Singleton
 * @author bacco
 *
 */
public class SingletonClientClass implements Runnable {
    MySingletonClass singleton = MySingletonClass.getInstance();
   
   
    public static void main (String []  args){
        SingletonClientClass clinetClass = new SingletonClientClass();
        Thread t1 = new Thread(clinetClass);
        t1.setName("Thread1");
        Thread t2 = new Thread(clinetClass);
        t1.setName("Thread2");
        t1.start();
        t2.start();
   
    }

    @Override
    public void run() {
        long init = System.currentTimeMillis();
        System.out.println (System.currentTimeMillis()  - init);
        System.out.println( Thread.currentThread().getName() + "setting name  ");
        singleton.setName(Thread.currentThread().getName());
        for (int i =0; i < 5 ; i++) {
        try {
            System.out.println (System.currentTimeMillis() - init );
            System.out.println (Thread.currentThread().getName() + "stopping ");
            Thread.currentThread().sleep(3000);
            System.out.println (System.currentTimeMillis() - init);
            System.out.println (Thread.currentThread().getName() + "setting name");
            singleton.setName(Thread.currentThread().getName());
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        // TODO Auto-generated method stub
        }
    }   
}


/**
 * Singleton class
 * @author bacco
 *
 */
class MySingletonClass {
   
    private static MySingletonClass instance;
   
    private String name;
   
    /*
     * serve ad inibire il costruttore
     */
    private MySingletonClass (){
       
    }
   
    public static synchronized MySingletonClass getInstance(){
        if (instance == null ){
            instance = new MySingletonClass();
        }
        return instance;
    }
   
     public synchronized void  setName(String name) {
        instance.name = name;
        System.out.println("Singleton Instance " + this.toString() + " Named "  + this.name );
    }



}



Here sample output
0
0
Thread2setting name 
Thread-1setting name 
Singleton Instance MySingletonClass@6bbc4459 Named Thread2
2
Singleton Instance MySingletonClass@6bbc4459 Named Thread-1
1
Thread2stopping
Thread-1stopping
3002
3001
Thread-1setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread-1
3001
Thread-1stopping
Thread2setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread2
3002
Thread2stopping
6001
Thread-1setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread-1
6001
Thread-1stopping
6002
Thread2setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread2
6002
Thread2stopping
9002
9001
Thread-1setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread-1
Thread2setting name
Singleton Instance MySingletonClass@6bbc4459 Named Thread2