Center JDialog over parent

by

On the JDialog you’ve created you should call pack() first, then setLocationRelativeTo(parentFrame), and then setVisible(true). With that order the JDialog should appear centered on the parent frame.

If you don’t call pack() first, then setting the location relative to the parent doesn’t work properly because the JDialog doesn’t know what size it is at that point. It appears to take the size as 0 by 0, which results in the “top left pixel of the popup over the center pixel of the parent” positioning mentioned in a comment to one of the other answers.

More Related Contents:

  1. Explain the code to create a textfield using java [closed]
  2. The Use of Multiple JFrames: Good or Bad Practice? [closed]
  3. How to set output stream to TextArea
  4. Best practice for setting JFrame locations
  5. Java Swing: How can I implement a login screen before showing a JFrame?
  6. Java Swing : why must resize frame, so that can show components have added
  7. Why are my items not showing up in JFrame?
  8. How to focus a JFrame?
  9. What is the relation between ContentPane and JPanel?
  10. Can I add a component to a specific grid cell when a GridLayout is used?
  11. Can this be made in Java? [closed]
  12. error: illegal start of expression 1 error
  13. Why is it frowned upon to use a null layout in Swing?
  14. Making a robust, resizable Swing Chess GUI [closed]
  15. Swing: link toggle buttons together with a button group, along with corresponding menu items
  16. Java: Difference between the setPreferredSize() and setSize() methods in components
  17. Centering a JLabel on a JPanel
  18. Unresponsive KeyListener for JFrame
  19. how to change UI depending on combo box selection
  20. Line-breaking widget layout for Android
  21. Calling one JFrame from another using Timer without any buttons
  22. WindowBuilder Design Tab incomplete in Eclipse
  23. Sizes of frame icons used in Swing
  24. Adding JPanels from other classes to the cardLayout
  25. set and disable icons of JToggleButton
  26. JTable Right Align Header
  27. Centering a JLabel in a JPanel
  28. How do I draw an image to a JPanel or JFrame?
  29. JavaFx tableview sort is really slow how to improve sort speed as in java swing
  30. Netbean Java Swing, JPanel/Jlabel Cant cover whole Frame

Leave a Comment