NoClassDefFoundError when call from native side

Hi,

I have a javaagent who replaces primitive types by an object version. For the
calls to natives methods, I have set a prefix for native methods and I call it
from the original method name who is converting types.

Now my problem is when the program want to call java methods from native side.
I thought to write a wrapper with the original signature of the methods where I
replace types but I have an java.lang.NoClassDefFoundError before that.

Is that the class is not found because the signature has changed?
Is there a way to allow the call of a java method on a modified class from
native side?

Thank you

The error when I try to run my agent with a graphical interface program:
2014-05-02 13:00:46.187 java[6399:2407] java.lang.NoClassDefFoundError: Could
not initialize class sun.java2d.opengl.OGLSurfaceData
2014-05-02 13:00:46.189 java[6399:2407] (
	0   CoreFoundation			0x00007fff8950725c
__exceptionPreprocess + 172
	1   libobjc.A.dylib			0x00007fff9005ee75
objc_exception_throw + 43
	2   CoreFoundation			0x00007fff89506e09
-[NSException raise] + 9
	3   JavaNativeFoundation		0x0000000113846c3f
JNFCallStaticVoidMethod + 213
	4   liblwawt.dylib			0x00000001156cc23f setBusy +
121
	5   CoreFoundation			0x00007fff89437e17
__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
	6   CoreFoundation			0x00007fff89437d87
__CFRunLoopDoObservers + 391
	7   CoreFoundation			0x00007fff89429543
__CFRunLoopRun + 995
	8   CoreFoundation			0x00007fff89428f25
CFRunLoopRunSpecific + 309
	9   HIToolbox				0x00007fff91b60a0d
RunCurrentEventLoopInMode + 226
	10  HIToolbox				0x00007fff91b607b7
ReceiveNextEventCommon + 479
	11  HIToolbox				0x00007fff91b605bc
_BlockUntilNextEventMatchingListInModeWithFilter + 65
	12  AppKit				0x00007fff8dba83de
_DPSNextEvent + 1434
	13  AppKit				0x00007fff8dba7a2b
-[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
	14  libosxapp.dylib			0x0000000113fc9b56
-[NSApplicationAWT nextEventMatchingMask:untilDate:inMode:dequeue:] + 124
	15  AppKit				0x00007fff8db9bb2c
-[NSApplication run] + 553
	16  libosxapp.dylib			0x0000000113fc99b9
+[NSApplicationAWT runAWTLoopWithApp:] + 156
	17  liblwawt.dylib			0x00000001156cc13e -[AWTStarter
starter:] + 1591
	18  Foundation				0x00007fff93a2513e
__NSThreadPerformPerform + 229
	19  CoreFoundation			0x00007fff89438661
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	20  CoreFoundation			0x00007fff89429d12
__CFRunLoopDoSources0 + 242
	21  CoreFoundation			0x00007fff8942949f
__CFRunLoopRun + 831
	22  CoreFoundation			0x00007fff89428f25
CFRunLoopRunSpecific + 309
	23  java				0x000000010eb9942d
CreateExecutionEnvironment + 871
	24  java				0x000000010eb93bdc JLI_Launch +
1952
	25  java				0x000000010eb9978a main + 101
	26  java				0x000000010eb93434 start + 52
	27  ??? 				0x0000000000000005 0x0 + 5
)
Exception in thread "main" java.lang.UnsatisfiedLinkError:
sun.lwawt.macosx.CPlatformWindow.$$$WRAPPER_NATIVE_METHOD$$$_nativeCreateNSWindow(JJDDDD)J
	at sun.lwawt.macosx.CPlatformWindow.$$$WRAPPER_NATIVE_METHOD
$$$_nativeCreateNSWindow(Native Method)
	at
sun.lwawt.macosx.CPlatformWindow.nativeCreateNSWindow(CPlatformWindow.java)
	at
sun.lwawt.macosx.CPlatformWindow.initialize(CPlatformWindow.java:237)
	at sun.lwawt.LWWindowPeer.<init>(LWWindowPeer.java:158)
	at sun.lwawt.LWToolkit.createDelegatedPeer(LWToolkit.java:215)
	at sun.lwawt.LWToolkit.createFrame(LWToolkit.java:232)
	at java.awt.Frame.addNotify(Frame.java:477)
	at java.awt.Window.show(Window.java:1031)
	at java.awt.Component.show(Component.java:1651)
	at java.awt.Component.setVisible(Component.java:1603)
	at java.awt.Window.setVisible(Window.java:1014)
	at pkgfloat.FloatClass.main(FloatClass.java:47)

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