JPanel 3 « JPanel « Java Swing Q&A





1. JPanel    forums.oracle.com

2. JPanel Editing    forums.oracle.com

4. Creating a Jpanel outside of the constructor method of my GUI class    forums.oracle.com

Hi Im developing an application who use a class to implement and show the api GUI. But I want to add (create) a JPanel inside of an another JPanel (named notificationPanel)which exist arleady in the GUI when I push a button. This is my code: //instant of calling: help is the action associated to button pushing if("help".equals(e.getActionCommand())) this.getColorNotificationPanel(Color.RED); //content of getColorNotificationPanel(Color ...

5. JPanel trouble    forums.oracle.com

Hi everyone, i am working on an Applet that includes a JPanel on which some image manipulations are supposed to take place. For this i try to create an off-screen drawable image using {code}createImage{width, height){code} from Component. For some reason, though, this method returns always null. What could be the reason for that. I read the documentation for this method but ...

6. How do I make a hole in a JPanel with swing?    forums.oracle.com

Hi everyone, M knowledge about Java is not vast but still it helps me somehow. My problem is, I am writing a program that has a JFrame with a JPanel added to it and I need to draw a visual object in the middle of a white circle with everything else black. It's like old James Bond intros you see; black ...

7. The Cosmetics of a JPanel    forums.oracle.com

8. another JPanel in Jpanel    forums.oracle.com





10. the Jpanel is blank using jre1.4    forums.oracle.com

Hi all, When I use the jre 1.4 library, the Jpanel is blank i.e. there is no lable or textfield that I add. however, it is fine when I change to jre 1.5. so I try to uninstall the jre1.4 and install it again. but it did not work. anyone encounted such problem before?

11. Referencing JPanels within a JPanel    forums.oracle.com

Tip : When working with Swing if you are doing something that seems extraordinarily complex, backwards and obtuse it's a good sign you're doing it wrong. I am not sure I have ever used getComponents in my life. I am sure there is a reason someone would want to but I doubt you really need or want to do this.

12. JPanel mess    forums.oracle.com

Also, it's dicey to call setVisible(true) from the constructor, as you are then attempting to make visible an object that has not (yet) been fully constructed. Invoke setVisible after construction is complete, and also after all components have been added to the JFrame. Another point: your class evidently extends JFrame (inheritance), is that necessary? It is usually better for the class ...

13. jpanel getWidth returns 0    forums.oracle.com

I have a jframe using flowlayout which displays a variable number of jpanels. I don't want to display more than can fit on 1 row of the jframe. I'm trying somthing like this: for ... get object from vector create a new gamePanel with object attributes (extends jpanel) totalWidth += game.getWidth(); if (totalWidth <= windowWidth) this.add(gp); else break; Unfortunatly getWidth returns ...

14. JPanel Interaction    forums.oracle.com

Hello, thanks for those who helped with the last problem I had. Anyways, I have a new problem sadly. To make it short, I have JPanel A and JPanel B. JPanel B has buttons, when pressed, should tell JPanel A to start a graphic animation loop with paint and timer. The problem is that I can't find a way to press ...

15. Serializing an extension of JPanel    forums.oracle.com

16. Genarate JPanel    forums.oracle.com

Hi everybody, First, i want to excuse my english because i'm a french guy. Thank you I want to generate multiple JPanel inside a single JPanel. I try with a for loop, but this method don't give me any succes. The situation is...... i recieve an ID between 1 to unlimited and depending this ID i want to generate a JPanel ...





17. Jfrechart show in the Jpanel    forums.oracle.com

18. JPanels    forums.oracle.com

Hi Guys, need a bit of help. I am trying to add a JPanel and an Object(Object is called canvas and invokes the paint component method which draws a few circles onto it) to another JPanel. The problem is that the the object will not appear and i have looked through the Java Tutorials but wit no luck. Can this even ...

19. Refer to a JPanel??    forums.oracle.com

the above code allows graphics to be used on the panel extended in the class...but i want the graphics to be used on another panel called pan, which can be passed to this class...how do i make that passed JPanel called pan refer to the extended JPanel of this class...so that i can make graphics on JPanel pan???

20. Flash swf in a JPanel    forums.oracle.com

Hi guys, is it possible to show a swf flash file in a swing jPanel? With a java based web browser I wasn't successful in it. Alternatively is it possible from Java, launching Internet Explorer (or Mozilla) with an assigned webpage? Thanks in advance Bye Edited by: giuseppe_italiano on Nov 13, 2007 7:55 AM

21. Noob question dealing with JPanel    forums.oracle.com

Hi, right now I'm doing a program for school where three cars are displayed on the screen, and by pressing the start button, they move randomly to the finish line. However, my problem right now is displaying the three cars on the screen. I've created three different classes of cars, with an abstract superclass(requirement for class), which extends JPanel. I then ...

22. Multipule Jpanels question    forums.oracle.com

23. JPanels - Help! How to make reusable JPanels    forums.oracle.com

This solution worked when I made my buttons public. I feel silly because I didn't realize that the gui defaulted to private, but the buttons could be made public. It would be safer to make the buttons private and pass an actionevent to the beans panel and let it handle it, but this solution was quick and dirty.

24. Check to see if a JPanel is already open    forums.oracle.com

I'm a bit confused then. Without creating an instance of the class, how can i get access to the class? Well you have to create A instance yes. The problem is that you keep creating new ones. Your instance of KeyboardPanel needs to be a class variable in your GUI class. Not a local to method variable. As for not extending ...

25. JPanel backround question    forums.oracle.com

26. NetBeans: Set JPanel from another class.    forums.oracle.com

New here, and reasonably new to Java, and been using NetBeans for about a week. What I'm looking to do is have one JFrame (created through NetBeans) that I can populate with JPanels created in different classes. For example, I want to have a main window, and when a user selects a menu option, the screen repaints and displays the new ...

27. JPanel help    forums.oracle.com

Scanner in = new Scanner(System.in); System.out.println("CALCULATOR (h for help)"); System.out.println("NOTE: ~ represents minus, - represents negative"); String input = ""; input = clearWhitespace(in.nextLine()); while (!input.equalsIgnoreCase("q")) { if (input.equalsIgnoreCase("graph")) { System.out.println("Opening function graphing window..."); } if (input.equalsIgnoreCase("h")) { System.out.println("\nVARIABLES"); System.out.println("ans = last answer"); System.out.println("@ = pi = 3.14..."); System.out.println("# = e = 2.718..."); System.out.println("\nKEYS"); System.out.println("h = help"); System.out.println("q = quit"); System.out.println("* = ...

28. [Help] Include a Table into a JPanel    forums.oracle.com

Hello everybody I'm French so I apologize for the faults that I'm going to do and don't hesitate to correct me. So this is my programing problem : I need to include a Table into a JPanel and after 2 days of research, I've not found what I need. I've understand the functioning of a Table, but all the examples I've ...

29. javax.swing.JPanel Help    forums.oracle.com

30. can't getGraphics from JPanel    forums.oracle.com

31. Help!!! Need help on JPanel    forums.oracle.com

Hi guys, I am currently using a JPanel with the borderLayout. I want to have the east and west sections of the borderLayout to have a block of a certain size so that the center component can be center correctly when you maximized the window. Any ideas on how I could do that? Thank you in advance! : ) :-D One ...

32. Swap JPanel    forums.oracle.com

33. can we use setInsets into JPanel?    forums.oracle.com

34. can we use setinsets in JPanel?    forums.oracle.com

35. JPanel preferredsize help.    forums.oracle.com

Folks, Here is what I did: I put one JPanel in a JScrollPane, and put this JScrollPane in a JFrame. I set a preferredsize of this JPanel so the scroll bar could be seen. When the program is running, sometimes it figures out that the set preferredsize is too small so it set a new larger preferredsize and repaint(). Now this ...