How to get JNA working with JavaME

[dacolgit]

I created a wrapper of a C library with JNA and all is working. Now I'm trying to use the wrapper in a JavaMe project, but with no success. I.m using javaME SDK 8.2 and JNA 4.2.1. In NetBeans 8,1 I added JNA-4.2.1.jar and my wrapper to a JavaME project,just as I did with a Java project. I can build it, but when I try to run the project on the emulator I get the following error (the line where I have the error is where I try to access some JNA code):

`Starting emulator in execution mode Trying starting IMlet... TRACE: , startApp threw an Exception java.lang.UnsupportedClassVersionError

• java/lang/Class..unknown.(), bci=0
• java/lang/Class.initialize(), bci=110
• JavaMEApplication2.startApp(JavaMEApplication2.java:47)
• .unknown...unknown.(), bci=1
• .unknown...unknown.(), bci=5
• .unknown...unknown.(), bci=236
• .unknown...unknown.(), bci=38
• .unknown...unknown.(), bci=5
• .unknown...unknown.(), bci=127
• com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26 java.lang.UnsupportedClassVersionError
• java/lang/Class..unknown.(), bci=0
• java/lang/Class.initialize(), bci=110
• JavaMEApplication2.startApp(JavaMEApplication2.java:47)
• .unknown...unknown.(), bci=1
• .unknown...unknown.(), bci=5
• .unknown...unknown.(), bci=236
• .unknown...unknown.(), bci=38
• .unknown...unknown.(), bci=5
• .unknown...unknown.(), bci=127
• com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26 BUILD SUCCESSFUL (total time: 39 seconds)`

Would anyone have an idea about what's happening ? Thanks

[cosmicdan]

I think this is impossible. JNA depends on JNI functions, and J2ME has no support for JNI.

[cosmicdan]

Sorry, disregard - README states that it has JavaME support.

The class version error suggests that your IDE project is trying to compile against a version of JavaME that is too old, though - that's all I know so hopefully someone more knowledgeable comes along.