How Link netbeans to netlogo

I want to connect netbeans to netlogo. I have a class: NetLogoConnection I want to call the class when I click on OK btn in my GUI. The codes are as following:

XML Code:

import org.nlogo.app.App;
public class NetLogoConnection {
  public static void main(String[] argv) {
    App.main(argv);
    try {
      java.awt.EventQueue.invokeAndWait(
    new Runnable() {
      public void run() {
        try {
          App.app().open("C:/Users/fmar825/Desktop/fire.nlogo");
        }
        catch(java.io.IOException ex) {
          ex.printStackTrace();
        }}});
     // App.app().command("set density 62");
     // App.app().command("random-seed 0");
     // App.app().command("setup");
      //App.app().command("repeat 50 [ go ]");
      //System.out.println(
//App.app().report("burned-trees"));
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
}

And the code for calling the class with JButton is as following :

XML Code:

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
       NetLogoConnection.main(argv);
      
    }

The error Message is a s following:

XML Code:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at org.nlogo.app.App$.moreTokens$1(App.scala:163)
at org.nlogo.app.App$.processCommandLineArguments(App.scala:164)
at org.nlogo.app.App$.main(App.scala:82)
at org.nlogo.app.App.main(App.scala)
at NetLogoConnection.main(NetLogoConnection.java:4)
at User.jButton1ActionPerformed(User.java:989)
at User.access$1600(User.java:31)
at User$19.actionPerformed(User.java:601)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6525)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6290)
at java.awt.Container.processEvent(Container.java:2234)
at java.awt.Component.dispatchEventImpl(Component.java:4881)
at java.awt.Container.dispatchEventImpl(Container.java:2292)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
at java.awt.Container.dispatchEventImpl(Container.java:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2739)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:719)
at java.awt.EventQueue$4.run(EventQueue.java:717)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)