Edit Question - KnowledgeHub

Title Body

I am trying to invoke the Java Virtual machine from C++ following the example found here : Basically I have a small Java program: public class TestJNIInvoke { public static void main(String[] args) { System.out.println(args[0]); } } Then I have a C++ program that I want to create a JVM and call the TestJNIInvoke class: #include <jni.h> #include <cstdlib> #define PATH_SEPARATOR ';' /* define it to be ':' on Solaris */ #define USER_CLASSPATH "." /* where Prog.class is */ using namespace std; int main() { JNIEnv *env; JavaVM *jvm; jint res; jclass cls; jmethodID mid; jstring jstr; jclass stringClass; jobjectArray args; #ifdef JNI_VERSION_1_2 JavaVMInitArgs vm_args; JavaVMOption options[1]; options[0].optionString = "-Djava.class.path=" USER_CLASSPATH; vm_args.version = 0x00010002; vm_args.options = options; vm_args.nOptions = 1; vm_args.ignoreUnrecognized = JNI_TRUE; /* Create the Java VM */ res = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args); #else JDK1_1InitArgs vm_args; char classpath[1024]; vm_args.version = 0x00010001; JNI_GetDefaultJavaVMInitArgs(&vm_args); /* Append USER_CLASSPATH to the default system class path */ sprintf(classpath, "%s%c%s", vm_args.classpath, PATH_SEPARATOR, USER_CLASSPATH); vm_args.classpath = classpath; /* Create the Java VM */ res = JNI_CreateJavaVM(&jvm, &env, &vm_args); #endif /* JNI_VERSION_1_2 */ if (res < 0) { fprintf(stderr, "Can't create Java VM\n"); exit(1); } cls = (*env)->FindClass(env, "TestJNIInvoke"); if (cls == NULL) { goto destroy; } mid = (*env)->GetStaticMethodID(env, cls, "m

Tags (comma-separated) Cancel