Improved version without sync locking:
class SingletonObj
{
private static SingletonObj instance;
static
{
instance=new SingletonObj();
}
private SingletonObj()
{
}
public static SingletonObj getInstance() // without sync !
{
return instance;
}
}
El sáb, 06-08-2005 a las 09:14 -0500, David Johnson escribió:
> {
> private static final SingletonObj singleton;
>
> // optional - use if you want the initialization to occur as class load
> time
> // Otherwise, the initialization will occur at first call to
> getSingleton();
>
> // static initialization at load time
> static {
> getSingelton ()/
> }
>
>
> private SingletonObj ()
> {
> super ();
> singleton = this;
> }
>
> public static synchronized SingletonObj getSingleton ()
> {
> if ( singleton == null )
> {
> new SingletonObj();
> }
> return singleton;
> }
>
>
> }
>
>
> On Fri, 2005-08-05 at 20:11 -0700, Ming Han wrote:
> > You can use Singleton pattern, but care must be taken.
> >
> > For example
> >
> > if ( singleton == null )
> > {
> > singleton = new SingletonObj();
> > }
> >
> > There might be a case where few thread running concurrently on the null
> > checking, then multiple singleton object will be created more than one.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
