I want to hide system bar for tablet device. I searched a lot but not succeed. I added image for it.
I found some solution like
View v = findViewById(R.id.view_id);
v.setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
but I dont know how to use it 
And I know that is possible as http://forum.xda-developers.com/showthread.php?t=1228046 Can any one know how to do this ?
Finally after searching lots of time I got some alternativ for my requirement.
I know this is not a good idea for a programmer to back off from this situation but for my time limit I used this way…
I found this link and application which fullfil my requirement
http://www.42gears.com/blog/2012/04/how-to-hide-bottom-bar-in-rooted-android-3-0-tablets-using-surelock/
please visit this once if you want this type of requirement in your application ….
Thanks to all for helping me in my problem…