My Minecraft is not working on my Mac? Freezes on Mojang screen?

It started up two days ago and I'm not sure what to do. Every time I click to play Minecraft, it'll load and then it will stay frozen on the Mojang screen and the only way to get out of it is by force quitting it. I've tried restarting my computer, I've tried reinstalling Minecraft. I even went in and deleted any and all files associated with Minecraft. Nothing is working and I have no idea why or what it could be.

Check the java, in my brother Mac was the java that need a update