If you’ve been working on a large scene in the SDK, there is a good chance that you will need to increase the size of Java’s heap space (which is quite small by default). What is heap space?

To increase the amount of heap space allocated to the SDK, we must navigate to the SDK’s installation directory and edit the etc/jmonkeyplatform.conf file.

The installation directory for Mac and Windows is:

OS X: Applications/jmonkeyplatform.app/Contents/Resources/jmonkeyplatform/jmonkeyplatform

Windows: C:\Program Files\jmonkeyplatform

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