Java Wait for thread to finish
Thread has a method that does that for you join which will block until the thread has finished executing.
swing
How to use Java AWT setBackground
You have added the JPanel over the JFrame which completely blocks out the underlying container on which you have set the color. You could do this instead:
How to make PopUp window in java
The same answer : JOptionpane with an example 🙂
How do you add an ActionListener onto a JButton in Java
Two ways: 1. Implement ActionListener in your class, then use jBtnSelection.addActionListener(this); Later, you’ll have to define a menthod, public void actionPerformed(ActionEvent e). However, doing this for multiple buttons can be confusing, because the actionPerformed method will have to check the source of each event (e.getSource()) to see which button it came from. 2. Use anonymous inner classes: Later, you’ll have to define selectionButtonPressed(). … Read more
addMouseListener for a JPanel
JPanel doesn’t have ActionListener capabilities. Instead, you need to use a MouseListener Take a look at How to Write Mouse Listeners for more details…
How to Set JPanel’s Width and Height?
please, something went xxx*x, and that’s not true at all, check that code (basic stuff from Trail: Creating a GUI With JFC/Swing , and yet I still satisfied that that would be outdated ) EDIT: forget setDefaultCloseOperation()
Implementing an actionlistener to a JTextField
From what you’ve provided, it looks like you’ve imported or implemented a class other than java.awt.event.ActionListener named, ActionListener (class name conflict). Try qualifying the parameter as java.awt.event.ActionListener:
How to repaint a JPanel after have drawn on it?
Try calling somePanel.revalidate(). That will tell the AWT that you have changed the component tree. EDIT: Changed from invalidate to revalidate
How to add an image to a JPanel?
Here’s how I do it (with a little more info on how to load an image):