compile problem - prolly just a stupid mistake

OpenGL Development
#1

Okay . . . just wrote a quick little Base OpenGL class to derive all my other classes from. I go to compile and the only error is . . .

 
   [javac] C:\NateDev\Artillery\src\com\rn\GLUser.java:12: cannot access org.lwjgl.DisplayMode
    [javac] bad class file: C:\NateDev\Artillery\lib\lwjgl.jar(org/lwjgl/DisplayMode.class)
    [javac] class file has wrong version 48.0, should be 47.0
    [javac] Please remove or make sure it appears in the correct subdirectory of the classpath.
    [javac]   protected static DisplayMode mode;
    [javac]                    ^
    [javac] 1 error

The only time I’ve ever gotten this error before was when I the package name in one of my class files didn’t match the directory I’d put it in. Took forever to figure it out. This . . . well, it’s in the .jar, so that’s not the problem and the .jar is definitely in the classpath, etc.

I managed to compile a class similar to this yesterday, so I’m positive this is just a ID-10-T error, but I’m wondering if anybody out there’s willing to smack me upside the head and tell me what’s wrong.

-Nate

#2

Well, figured it out myself.

Was using the 1.3.1 JRE. Switched to 1.4.2 beta and it works just fine now.

Guess you guys built this with 1.4.x

Sorry to bother.

-Nate

#3

yeah - how the hell did you compile in the first round ???
We use the assert keyword, which implies that you NEED to pass -source 1.4 as a switch to javac !

#4

[quote]yeah - how the hell did you compile in the first round
[/quote]
I’m using JDeveloper and currently I have 3 different JRE’s on my box. Last one I just dropped my class into an already built project and did it that way, but this time it’s got its own project . . . which defaulted to 1.3.1.

Wasn’t actually aware you could force compile to a particular JRE version. That’s kind o’ kewl.

Anyway . . . is fixed for now . . . no more questions for a while.

-Nate