Strange behavior with java from command line

[ocean]

<SOLVED>

Evening. Have a small issue. I use NetBeans when i code. It has made a nice Jar file. When i start it using java -jar path class.jar it starts but freeze at main frame. Cant click on the x to close it. All menus and other swing items dont show.

So i re compiled it from a new directory with fresh .java files using javac *.java from comand line. With the same result.

Confused I start NetBeans again. and there it works perfect. What does NetBeans do that i dont? or that i need to do. :confused:

I Have also comment out everything and only compiled only Main.java as shown below, with same result.

Have now tryed diffrent thing.
One i created a new class with only System.out.print("hello"); Works fine.

Two. added a simple JFrame with basic parameters. Little Buggy. wont close on x
every time.

Three tryed added one of my orginal classes, it shows but freeze. and it uses another font then in NetBeans.

Mabey need to re install my java ?

import java.awt.Dimension;
import javax.swing.*;

public class Main {
   
    Main(){
    mstFrame();
    }

private JFrame mstFrame () {
   
    JLabel label = new JLabel("hello");
    JFrame mstFrame = new JFrame("Mst");
  //  JTabbedPane mstTabPane = new JTabbedPane();
  // mstTabPane.addTab("Start", new Welcome());
  //  mstTabPane.addTab("Create Project", new CreateProject());
  //  mstTabPane.addTab("Customer", new Customer());
  //  mstTabPane.addTab("Product", new Product());
    mstFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  //   mstFrame.setSize(new Dimension(1010,620));
  //   mstFrame.setLocationRelativeTo(null);
  //  mstFrame.add(mstTabPane);
   
    mstFrame.setVisible(true);
     mstFrame.pack();
    return mstFrame;
}

   
    public static void main(String[] args) {
       java.awt.EventQueue.invokeLater(new Runnable(){
           public void run(){
              new Main();
           }
       }
  );
    }

}

[ocean]

Yes it was a re install of JDK that I needed. Now it works fine.