If you've just plugged it in to the charger, leave it a while before you try to turn it on.  The boot sequence uses power faster than USB can provide it, so you will need a little juice in the battery in order for it to boot up all the way.

Nexus 7 is stuck in reboot loop after full discharge
I am creating Swing frame demo. 

I have set an image icon in the title bar of JFrame, and I know the default size of the icon is 16x16. How can I change the height and width of the icon?
