Wrapper methods

Question

I need some clarification for something i just came across:
I would understand that the native keyword signals to the Java compiler that the function is a native language function.
Is it possible to call method which does not exits in the native dll but in turn this method calls for certain native methods in the wrapper dll?
for example lets say I declare a method:
native int dummymethod();
...and there isn't a method which maps to this in the native DLL,
but could I in the wrapper file call a native method inside this:
JNIEXPORT jint JNICALL Java_myClass_dummymethod
(JNIEnv *env, jobject obj)
jint myimgHeight;
myimgHeight=Height();// height is the native method of the DLL
myimgHeight=myimgHeight*2;
//perform other actions here
return myimgHeight;
.....is this possible?!
I have also seen these statements for some example file:
JNIEXPORT jint JNICALL Java_exampleJNI_get_1MaxTime(JNIEnv *jenv, jclass jcls)
I wonder what the "1MaxTime" stands for as it does not map any native method with a "1" perfix.
thanks

Answer 1

bschauwe, let me explain my situation a little better, I am here debugging a code written by someone else, where I came across:
native byte[] ImageData();
Now expecting to see a ImageData() function defined in the .h of the third party DLL, I ran into a dead end! There was no such declaration for this method in the header. So i was left wondering if a different method was called under ImageData() in the native method implementation.
Take a look at this thread, maybe this is how it works as well,
http://forum.java.sun.com/thread.jsp?forum=52&thread=416532
davidnjclarke, calls
public native void MyDLLfunction();
but goes on to say,
JNIEXPORT void JNICALL
Java_MyDLL_myDLLfunction(JNIEnv *env, jobject obj)
MyRealFunction();
return;
there is a discrepancy between the method names called(MyDLLfunction and MyRealFunction)....is this valid?