//**************** JavaTester.cpp ******************//
#include <windows.h>
#include <jni.h>
#include <libloaderapi.h>

int main()
{
   const int numArgs = 2;
   JavaVMInitArgs vmArgs;
   JavaVMOption * options = new JavaVMOption[numArgs];

   // folder where TextTest.class is located
   options[0].optionString = (char*)"-Djava.class.path=D:";

   if ( numArgs > 1 )
      options[1].optionString = (char*)"-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=9009";

   vmArgs.version = JNI_VERSION_10;
   vmArgs.nOptions = numArgs;
   vmArgs.options = options;
   vmArgs.ignoreUnrecognized = false;

   char jvmPath[512] = "C:\\OpenJDK14\\bin\\server\\jvm.dll"; // custom installation
// char jvmPath[512] = "C:\\Program Files\\Java\\jdk-14.0.1\\bin\\server\\jvm.dll"; // standard installation
   HMODULE hmod = LoadLibraryA( jvmPath );
   if ( ! hmod )
      return 1;

   typedef void createJVMFunctionPtr(JavaVM**, void**, void*);
   createJVMFunctionPtr * createJVMFunction = (createJVMFunctionPtr*)GetProcAddress( hmod, "JNI_CreateJavaVM" );
   if ( ! createJVMFunction )
      return 2;

   JavaVM * jvm = nullptr;
   JNIEnv * env = nullptr;
   createJVMFunction( &jvm, (void**)&env, &vmArgs );

   if ( ! jvm )
      return 3;
   if ( ! env )
      return 4;

   jclass cls = env->FindClass( "TextTest" );
   jmethodID mid = env->GetStaticMethodID( cls, "RunTest", "()V" );
   env->CallStaticVoidMethod( cls, mid );

   // kludge to keep the swing window from disappearing for 30 seconds
   Sleep( 30000 );

   jvm->DetachCurrentThread();

   return 0;
}

//**************** END JavaTester.cpp ******************//