GUI Application Template

Actually there is nothing really special about an application that uses a GUI.

Simply create an application-class holding the main method as usual, then add a new file and make it a JFrame (select File - New File, then select "Java GUI Forms" and finally chose "JFrame Form").
In the application-object we simply create an object of the GUI-class and then shows it using the setVisible() method of the JFrame object.

In the following I assume that we've created a JFrame class called "ReadDataGUI" using NetBeans.
The application is named "Calculator" - the job of the application-object is simply to get the GUI-object running. We assume that all further execution is made from there.

public class Calculator {

   //Constructor for the class :
   public Calculator() {
      //In this very simple example there is no code for the constructor!
   }

   //main method creates application
   public static void main(String[] args) {
      //Initial code (nothing in this simple application)

      //Create application-object :
      Calculator app = new Calculator();

      //Give control to application-object by activating a method
      app.runApp();
   }

   //A method for controlling the application
   public void runApp() {
      //application code goes here (simply create and show GUI):        
      ReadDataGUI mainWindow = new ReadDataGUI();
      mainWindow.setVisible( true );
   }
}

For the general template click here: Application Template