miglayout | Official MiG Layout for Swing , SWT and JavaFX

Start by having a look at How to Use Buttons, Check Boxes, and Radio Buttons and How to Write an Action Listener

One thing you want to focus on is the setActionCommand for buttons and getActionCommand for the ActionEvent

For example...

According to the API documentation, the correct class to import is:

Theres multipple things wrong with your code, and many bad habits.

1. setLocation() only has permanent effects once you disable the the Layoutmanager. With panel.add(create_btn); you would need a panel with a LayoutManager that does not do any layouting on the Components. I don't know MigLayout, but as LayoutManagers usually do, they lay out the Components. So whenever any change makes MigLayout to layout the panel's Components, any previous manual changes via setSize/setLocation/setBounds etc are lost.

2. You re-use the variable "create_btn", you you actually do not add the first one to any panel, thus it will not appear. Best practice:

• Do not re-use variables
• Initialize as many components as possible in the field with final. This excludes any Components where initialisation throws Exceptions; however they still should be initialized ASAP and made final if possible

1. It looks like you're mixing up the Class APP and the standalone frame you create(frame = new JFrame();). You add the image to the APP, but you never display the frame APP. Instead, inside, you create a second Frame "frame", do NOT add any pictures/labels to it, and then display it. So no wonder the image does not get displayed, as it is in the Frame "APP" that never gets displayed.

/UPDATE: If you want to position the items all by yourself, simply add the line panel.setLayout(null);

The reason why you don't see anything is because in the generated code, the contents are added to frame1. But your GUI, which is of type Login also extends JFrame, so you got confused there. You used GUI.setVisible(true) even though this JFrame doesn't actually contain the components that were generated.

To fix this, you have two options.

1. Don't make your Login extend JFrame, instead set the contained JFrame visible at the end of the initComponents() method.
2. Add all the components to the Login instance, meaning this, in the initComponents method, and get rid of the frame1. Then you can keep the main method as it is.

You can use to span cells:

I've been having similar issues with JavaFX as well, since Java 11+. It's probably caused by your application not being a module.

As a workaround, try this:

I would suggest

I have solved it. The correct way to do this is like so

The answer was found with the help of @IanTurton

I upgraded the geotools version from 15.2 to 20.5. I also added the gt-epsg-hsql jar. The pom.xml is now like this :