java.lang.OutOfMemoryError

I keep getting this error java.lang.OutOfMemoryError. How do i check how much memory the JVM is using and how do change the memory of the JVM? Thanks in advance?

You can find how much memory JVM is using and available free memory using
java.lang.Runtime class api's totalMemory() and freeMemory(). I am not sure how one can increase the memory for the JVM. It will be more specific to host OS.

You could set it with -X options
if you type java -X it will show you the help, there are two options
-Xms set initial Java heap size and -Xmx set maximum Java heap size.

It's worth mentioning that memory leaks are definitely not impossible in Java. If in your code you (for example) add Objects to a Collection without ever removing them, you will eventually run out of memory. As mentioned in the previous post the -Xms<size> (initial Java heap size) and -Xmx<size> (maximum Java heap size) allow you to set the heap size.

Also static Collection is dangerous.

You can also set this permanently in the Java plugin e.g. on windows Start --> Settings --> control panel --> Java plugin. Click the advanced tab and then stick it in the Java Runtime Parameters field something like

-Xms32m -Xmx256m

Thanks for the help. I'm still trying to figure out what to do but all this points me in the right direction.