MINECRAFT RANDOMLY CLOSES AND JAVA RANDOMLY CRASHES

Hello.
My and my friends minecraft randomly closes sometimes.
And java crshes sometimes.
But yesterday and today it crashes like every 10 minutes and less.
Any help please?
I got java 32-bits and a windows 7.
It just popps up that java crashed, then we need to relog.
Please help! Willing to do much to fix this for me and my friend.

Update Java
Try the 64-bit version
uninstall java and reinstall
run a fresh server and see if the issues are still there
Reboot the computer

Just some things to get you started... might want to start from the bottom and work up twards the top. Reboots are allways the best start.

happens to me too. Vapid's solutions sound viable.

@Peter110
If Vapid's solutions didn't work, try leaving caps lock on 100% of the time.

Sorry for the title XD
How do I get a better version of java?
They only recommend the 32-bits for me :/