FindClass() throws java.lang.UnsatisfiedLinkError exception

Question

Hi All,
I am using a JNI to make my C program to communicate with the GUI developed in Java Swings. In my C program I have used FindClass() method to find the java class. While exececuting my C program, I got the following exception,
Exception in thread "main" java.lang.UnsatisfiedLinkError: /usr/java/jre1.5.0_04/lib/i386/libawt.so: /usr/java/j2sdk1.4.2_08/jre/lib/i386/libmlib_image.so: version `VER_1.1' not found (required by /usr/java/jre1.5.0_04/lib/i386/libawt.so)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at sun.security.action.LoadLibraryAction.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.NativeLibLoader.loadLibraries(Unknown Source)
at sun.awt.DebugHelper.<clinit>(Unknown Source)
at java.awt.Component.<clinit>(Unknown Source)
I have ensured that the libawt.so and ibmlib_image.so paths are set in LD_LIBRARY_PATH. Inspite of that I am not able to access the java class because of the above mentioned exception. Please help me out in this.
For your reference, I am attaching the code with this,
#include <jni.h>
int main()
     JavaVMOption options[2];
     JNIEnv *env;
     JavaVM *jvm;
     JavaVMInitArgs vm_args;
     long status;
     jclass cls;
     jobject obj;
     jmethodID mid;
     jstring jstr;
     char str[25];
       options[0].optionString =        "-Djava.class.path=/home/maniyan/work/Dhruv_proj/vers/v5";
     options[1].optionString = "-verbose:jni";
     memset(&vm_args, 0, sizeof(vm_args));
        vm_args.version = JNI_VERSION_1_4;
     vm_args.nOptions = 1;
     vm_args.options = options;
     vm_args.ignoreUnrecognized = 1;
     status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
     printf("status %d\n",status);
     if (status != JNI_ERR)
          printf("Exception %d\n",(*env)->ExceptionCheck(env));
          cls = (*env)->FindClass(env, "frame_main_v1");
          printf("Exception %d\n",(*env)->ExceptionCheck(env));
          if ((*env)->ExceptionCheck(env)) {
          (*env)->ExceptionDescribe(env);
          (*env)->ExceptionClear(env);
     if(cls !=0)
             //printf("am here\n");
          mid = (*env)->GetStaticMethodID(env, cls, "display_message", "(Ljava/lang/String;)V");
          printf("Method %d\n",mid);
          if(mid !=0)
          {      strcpy(str,"Hello world");
                (*env)->CallStaticCharMethod(env, cls, mid, (*env)->NewStringUTF(env, str));
     (*jvm)->DestroyJavaVM(jvm);
     return 0;
else {
          printf("some error\n");
          return -1;
Thanks in adv,
Cool Dude

Answer 1

this is like a classpath issue, but for a native library
basically you need to include the library file in your path info to the JVM