Name: dm26566 Date: 10/21/98


1. steps:
   javac case15.java
   javah -jni case15
   cl -c foo.c
   cl /LD /Fenative.dll foo.obj libc.lib
   java case15
2.
source case15.java:
class case15 {

    static {
        System.loadLibrary("native");
    }

    public native int foo(case15 o);

    public static void main(String[] args)
    {
      case15 a = new case15();

      int i;

      a.foo(a);
      a.foo(null);
    }

    public void bar()
    {
        System.out.println("in bar");
    }
}
source foo.c:
#include "case15.h"

JNIEXPORT jint JNICALL Java_case15_foo (JNIEnv *env, jobject obj, jobject obj2)
{
        jclass cls;
        jmethodID mid;

        cls = (*env)->FindClass(env, "case15");
        mid = (*env)->GetMethodID(env, cls, "bar", "()V");
        (*env)->CallVoidMethod(env, obj2, mid);
        if ((*env)->ExceptionOccurred(env) != NULL)
          printf("NullPointerException raised\n");
        else
          printf("Call to bar passed\n");
}
3. JNI panic: native code passed a null object to a non-static method
        at case15.main(case15.java:16)
(Review ID: 40563)
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