Uninstall Apps

Guys,i've downloaded an app called wallble so when i tried to restart my mac
i faced a message says "Wallble cancel the restart operation", or something like this. here is the problem when i try to close it it doesn't close. so i deleted it from the launchpad but the program is still working and it doesn't exit !!! what should i do?

Deleting it from the launchpad doesn't actually uninstall the application. A lot of applications are uninstalled by dragging the file from the Application folder to the trash, but a few have their own uninstallation program that needs to be run. Programs like AppCleaner are great at removing the application completely..

look actually it uninstalled the program but it didn't stop it's activity.... but actually i left the MAC after serval minuets and the program showed a message says "wallble stopped working unexpectedly"

Restart the computer and see if it happens again..

The MAC didn't want to Restart,shut down or sleep!
everything gives the same message

Hold down the power button to force a shutdown and then restart. Removing a single application shouldn't prevent the Mac (not MAC btw) from restarting or doing anything else.

okay another question. how do i insert a desk hahahahahah....
look am not jocking but when i insert a desk in PS3 the PS sucks it inside put i don't know about the MAC

For the slot loading optical drives in Macbook Pro's and iMac, you just insert the disc until it pulls it in..