When I run the .jar, I get a "No lwjgl in java.library.path" error
Solution 1:
you have to point the jvm to where the native files are located using a command line parameter -Djava.library.path="path/to/natives". You could use a batch (.bat) file to specify this and start your application for you.
Alternatively you can use a tool like JarSplice to create a single executable jar file from all your jars and at the same time include your native files inside it. It automates the tricky part of specifying the natives manually and provides a nicer end user experience.
To use JarSplice just select your game.jar, lwjgl.jar, lwjgl_util.jar, and jinput.jar in the jars tab. Then all the *.dll, *.so, *.dylib and *.jnilib files in the natives tab. Add your main class on the class tab and create the single executable jar.
Solution 2:
LWJGL needs the native components for your particular platform to be in java.library.path
. These are in the subdirectory native
in the LWJGL distribution and end in .so
on Linux, OSX and Solaris and .dll
for windows.
Solution 3:
When I had this issue, it was because i accidentally put the argument to specify the location of the natives (-Djava.library.path=/native/) in the field called 'Arguments' under the run category of the options panel, instead of 'vm Options'. As seen here: http://s30.postimg.org/6f90akidt/Capture.png