Class could't found issue of native third party library

Hi ,

i have one issue in my Android Adobe AIR plugin .

i'm following below steps to create plugin -

1- I have successfully created my nativeExtention code by java ,

2-successfully created JavaScript library

3-successfully created .ane file with following command

adt -package -target ane abc.ane extension.xml -swc abc.swc -platform Android-ARM  -C platform/Android . -platform Android-x86 -C platform/Android-x86 . -platform default -C platform/default library.swf

and i put third party native jar in following directory structure

<Android platform directory>/  libs/  armeabi/  <Android emulator native libraries>  armeabi-v7a/  <Android device native libraries>

But I am getting class could't found issue  in native third party library please help me on this when i use ane file in flex mobile project in Adobe Air .