3.1. Modules and Packages

LWJGL is organized in modules:

• The core module includes packages org.lwjgl and org.lwjgl.system.
• Each API binding is a separate module and is contained within a single Java package. For example the org.lwjgl.opengl package contains the entire lwjgl-opengl module.

All public functionality in the following packages is meant to be used directly by users:

• org.lwjgl
• org.lwjgl.<binding>
• org.lwjgl.util.<binding>

The package org.lwjgl.system includes a lot of public functionality, but also:

• includes classes used internally by LWJGL to implement critical functionality that is generally not useful to users.
• includes platform-specific bindings and related functionality.
• includes unsafe utilities used to access off-heap memory.

There are no backwards compatibility guarantees for any public API in the system package.

On the other hand, some classes are very powerful and/or useful and can be considered more stable than others:

• org.lwjgl.system.Configuration
• org.lwjgl.system.MemoryUtil
• org.lwjgl.system.MemoryStack

Power-users that want to get the most out of LWJGL are encouraged to use them.