Hey Richard, Can u tell me the reasons why JVM creation might have failed , so that i can loook for it . Regards, Ravi

Hi all , I have the class file (HelloWorld.class) calls a native method, and the native library (Hello-World.dll) implements the native method. While running the HelloWorld class I am getting following error: Exception in thread "main" java.lang.UnsupportedClassVersionError: HelloWorld (Unsupported major.minor version 50.0) Is this error releted to Java version? I am using JDK 1.6.

I am not posting the entire code,Tell me if its sufficient Following is my Code:

int MyAPI(Parameters* Params, int i) {
.
.
.
JNIEnv *env;
JavaVM *jvm;
JavaVMInitArgs vm_args;
char clspath[400]="-Djava.class.path=";

resCheckVM = JNI\_GetCreatedJavaVMs(&jvm, bufLen, &nVMs);
if( resCheckVM < 0 || nVMs < 1 )
{
.
.
.
 JNI\_GetDefaultJavaVMInitArgs(&vm\_args);
 fflush(stdout);
 res = JNI\_CreateJavaVM(&jvm,(void\*\*)&env,&vm\_args);
 if (res < 0)
     fprintf(stderr, "Failed to Create JVM.\\n");
 }
else
{
 fflush(stdout);
 res = (jvm)->AttachCurrentThread((void\*\*)&env, NULL);
 if (res < 0)
   fprintf(stderr, "Failed attaching current thread to JVM.\\n");
 }
	 
cls = (env)->FindClass(Params\[i\].lib);

if (cls == 0)
{
  fprintf(stderr, "Can't find Prog class \\n",Params\[i\].lib);
  return 1;
}
    {
      fprintf(stderr, "Can't find function \\n");
      return 1;
     }

.
.
.

	 return 0;

}

Here I am getting this message "Failed to Create JVM." Then a run time error at FindClass(Params[i].lib).

Hey Richard, Here in 'FindClass(this, name)' name parameter is pointing to some value but 'this' pointer is pointing to 0x00000000. Plzz help........

Actually in jni.h following is the definition of FindClass

jclass FindClass(const char *name) {
return functions->FindClass(this, name); }

Following is the Error message I am getting at 'FindClass(this, name)': Unhandled exception at 0x60edf3a0 (xxx.dll) in yyy.exe: 0xC0000005: Access violation reading location 0x00000000.

Hi all, Iam getting run time error in following function in jni.h: return functions->FindClass(this, name); Following is the FindClass() function call fron my cpp file: cls = (env)->FindClass(servParams[i].lib); Plz help , I am new to JNI Programming. :(

Hi, I am getting following error: error LNK2001: unresolved external symbol "void __cdecl sqlcxt(void * *,unsigned int *,struct sqlexd *,*struct sq*lcxp const* )" (?sqlcxt@@YAXPEAPEAXPEAIPEAUsqlexd@@PEBUsqlcxp@@@Z) But after adding extern "C" in the PL/SQL code

extern "C"
{
void sqlcxt (void **, unsigned int *,+
struct sqlexd *, const struct sqlcxp *);+
void sqlcx2t(void **, unsigned int *,+
struct sqlexd *, const struct sqlcxp *);+
void sqlbuft(void **, char *);+
void sqlgs2t(void **, char *);+
void sqlorat(void **, unsigned int *, void *);+
}

I am getting the following error: error LNK2001: unresolved external symbol sqlcxt Please Help!!!!!! I am using Oracle 9i client on x64 platform.

ok got it.... Thanks -Superman- for your replies :)

So do i need to install oracle 9i client for 64 bit? or is there any way to use 32 bit dll?

Actually orasql9.lib is a sql file,which is present in the Oracle 9i client I have installed. So for 64 bit I am not getting which lib file to link.

I am linking to orasql9.lib. Can u tell me which library I have to link? Actually this is working fine for 32 bit application. But for 64 bit i am getting this error.:) Please Help......

Hi, I am using ProC code in my 64 bit application. i am getting the following error while building it: error LNK2001: unresolved external symbol sqlcxt I have added extern"C" in sqlcxt definition.

extern "C"
{
void sqlcxt (void **, unsigned int *,
struct sqlexd *, const struct sqlcxp *);
void sqlcx2t(void **, unsigned int *,
struct sqlexd *, const struct sqlcxp *);
void sqlbuft(void **, char *);
void sqlgs2t(void **, char *);
void sqlorat(void **, unsigned int *, void *);
}

Does any one has any idea why I am getting this? :(