How to convert a .jsp to a .java/.class for use in pplcode

At first , thanks for your help ,armalcolm
But I don't understand how to convert java string array to c string(char)array.I have seen the doc. , but I don't understand still.
Belown is my code
<code>
JNIEXPORT void JNICALL Java_init
(JNIEnv *env, jobject jobj, jobjectArray jfilename, jint jlength)
     jobject obj = env->NewObject(env,mid,param);
     jobjectArray obj_java = (jobjectArray)env->CallObjectMethod(obj,mid,param);
     length = jlength;
     filename = (char**) malloc(length * sizeof(char*));
     for (i=0;i<length;i++)
          jstring jstr = env->(jstring) GetObjectArray(obj_java,i);
          filename[i] = (char*) malloc(strlen(jstr)+1);
          strcpy(filename,GetStringUTFChars(jstr,0));
</code>
I know this is a error codes.Can you help me??
I don't know how to use NewObject() , CallObjectMethod() and GetObjectArray() method
Thanks

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