HelpMINECRAFT MEMORY

okay so about 4 hours ago I have tried something stupid, something I shouldn't have done. What I did was I went to the nether, grabbed a WHOLE BUNCH of TNT, and started planting everywhere. After, I ended up with about 500 TNTs, successfully planted and ready to go.
I set up my redstone wire far away from the tnt section, and set a lever. I pulled the lever, and watched the gory action.
After about 30 seconds or so, my minecraft crashed. I opened it up again, and it wasn't able to load the world.
I tried going back on it every 30 minutes or so, and after hearing a whole bunch of TNT explosion sounds, it crashed, saying your minecraft RAM memory is too low.
Anyone know how to increase your minecraft RAM memory? Maybe it was just too much TNT...

Lol Stark task manger and go to Proccess find the Minecraft proccess it should be java something Change the Piroty To high try that first. Then Let me know if that don't work and give me your computer spec.

Probably a corrupt world file. If not, check this video out!

You can send me the file, and I can run it through my server if you'd like. I've blown 80,000 TNT successfully.
If you run out of memory, your computer simply doesn't have enough memory. It can't be fixed using commandline parameters.