Is it possible to catch out of memory exception in java?

java exception out-of-memory
jy. picture jy. · Nov 7, 2009 · Viewed 89k times · Source

I'm developing a program that would require huge amount of memory, and I want to catch when out-of-memory exception happens. I had heard this is not possible to do, but curious if there is any development on this end.

Answer

ChssPly76 picture ChssPly76 · Nov 7, 2009

It's not an exception; it's an error: java.lang.OutOfMemoryError

You can catch it as it descends from Throwable:

try {
    // create lots of objects here and stash them somewhere
} catch (OutOfMemoryError E) {
    // release some (all) of the above objects
}

However, unless you're doing some rather specific stuff (allocating tons of things within a specific code section, for example) you likely won't be able to catch it as you won't know where it's going to be thrown from.

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