JNI - core dump - internal error on linux after calling Java method

Question

I'm getting a core dump after calling athe main statric method using JNNI.
On linux.
I can get the class id correcttly but when I attempt to call the method it craches with an internal error , anyone know why it would crash instead of just not work.
if(cls)
    main_methodID = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
       printf("Class Found Successfully\n");
  else
    printf ( "cls not found\n");
    return 0;
  if(main_methodID)
          jstring first_str = env->NewStringUTF("The First String");//create string
          jobjectArray args = (jobjectArray)env->NewObjectArray(1,env->FindClass("java/lang/String"), first_str);//new array with 2 elements
               env->SetObjectArrayElement(args, 2, first_str);//insert the second string into index 1 of the array
          jstring second_str = env->NewStringUTF("The Second String");//create string
          env->SetObjectArrayElement(args, 1, second_str);//insert the second string into index 1 of the array
     env->CallStaticVoidMethod(cls, main_methodID, args);//pass the array to the Java main method
                              The JAVA method is
  public static void main(String[] args) {
    System.out.println("Main method in Framework");
        Framework framework = new Framework();
                             

Answer 1

I see yere points but what I see on linux is it makes it to the constructor of the Java object and somewhere afterwards it bails out, the Java app does work alone. It appears to have problems initializing the JFrame, could there be a problem with the Java inheritance when a JVM is invoked throurgh native invocation??
Here's some of the Java stuff
public class Framework extends WindowAdapter {
    public int numWindows = 0;
    private Point lastLocation = null;
    private int maxX = 500;
    private int maxY = 500;
    public Framework() {
        System.out.println("JAVA Framework cnst");//GETTING HERE
        makeNewWindow();
    public void makeNewWindow() {
        System.out.println("JAVA makeWindow"); //GETTING HERE
        JFrame frame = new MyFrame(this); //NOT GETTING HERE!!!!!!!!!
        numWindows++;
        System.out.println("Number of windows: " + numWindows);
        System.out.println("Frame location: " + lastLocation);
        frame.setVisible(true);
        System.out.println("Post Java set frame visible");
    public static void main(String[] args) {
    System.out.println("Main method in Framework");
        Framework framework = new Framework();//GETTING HERE
class MyFrame extends JFrame {
    protected Dimension defaultSize = new Dimension(200, 200);
    protected Framework framework = null;
    public MyFrame(Framework controller) {
        super("New Frame");
        System.out.println("MyFrame cnst ");//NOT GETTING HERE!!!!!!
        framework = controller;
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        addWindowListener(framework);
        JMenu menu = new JMenu("Window");
        menu.setMnemonic(KeyEvent.VK_W);
       setSize(defaultSize);
}