Is it possible to add a menubar to one of the windows in a tabbed pane? And is a frame the only container which can have a menubar?
As Suraj mentioned, you can force the issue as as they are both, both components and containers however you will have to do the extra work to organize it in your pane's layout along with the rest of the components in the pane -- unlike with a JFrame which has methods to support it outright (setJMenuBar and you're outta there). Normally, when added to a JFrame, the JMenuBar is not in the content pane, it is in a layered pane which contains both the menu bar and the content pane below it.
You might also want to consider using a JToolBar which is very flexible (more easily customized) and has some optional built-in goodies like being separable/dockable.
Though you can directly add a JMenubar in to a JtabbedPane as both are JComponents. But it wont look nice(usable), if you have tried it.
I would suggest to subclass BasicTabbedPaneUI and override installComponents(), there you can add you JmenuBar at the top or wherever you want.
Is it possible to add a menubar to one
of the windows in a tabbed pane?
What problem did you have when you tried to do this?
If you need more help post your SSCCE showing the problem.
Related
i have 5 jFrames in my java project. And i want to make like a Main Menu.
I mean, i want that the program starts with a jFrame and when i click a button insteand of open the jFrame, all the elements like labels, buttons and tables are being shown in my principal jFrame.
And if i click other button the main frame will clean and charge other jframe.
It is possible? im programming with java jdk 8 and netbeans.
Thanks
Edit:
I think who marked duplicate didn't understand my question. I don't want to open or close the frame, or other frames, I want to load the structure and components of several in the same frame. Please read my question before you start complain that is duplicated
i have 5 jFrames in my java project.
And that's a problem.
And i want to make like a Main Menu. I mean, i want that the program starts with a jFrame and when i click a button insteand of open the jFrame, all the elements like labels, buttons and tables are being shown in my principal jFrame. And if i click other button the main frame will clean and charge other jframe.
Yes this can be solved by getting the contentPane (usually a JPanel) from the JFrame whose content you want to display within the currently displayed JFrame, and making it the contentPane of the displayed JFrame, for example:
// create the new JFrame, the one whose content you wish to display
NewJFrame newJFrame = new NewJFrame();
// get its contentPane
Container newContentPane = newJFrame.getContentPane();
// add this content pane into the displayed JFrame
displayedJFrame.setContentPane(newContentPane);
// revalidate and repaint the JFrame so that its new data is well displayed
displayedJFrame.revalidate();
displayedJFrame.repaint();
// displayedJFrame.pack(); // and you might need to do this if sizes are way off
But this extra gymnastics is bulky, prone to bugs and unnecessary. You are painting yourself in a corner by having your class extend JFrame, forcing you to create and display JFrames, when often more flexibility is called for. In fact, I would venture that most of the Swing GUI code that I've created and that I've seen does not extend JFrame, and in fact it is rare that you'll ever want to do this. More commonly your GUI classes will be geared towards creating JPanels, which can then be placed into JFrames or JDialogs, or JTabbedPanes, or swapped via CardLayouts, wherever needed. This will greatly increase the flexibility of your GUI coding.
For this situation what I recommend is that you do that, that your GUI classes create JPanels, and that you add the ones that you want to swap to a JPanel that uses a CardLayout. And then whenever you want to show a different "card", call show(...) on the CardLayout object, passing in the JPanel that uses it, as well as the String key that was used when adding the "card" JPanel to the CardLayout-using JPanel. This is all well-explained in the CardLayout Tutorials.
Other useful links:
For rationale on why to avoid manually swapping please see: What's so special about CardLayout vs manual adding/removal of JPanels?
For using a CardLayout to help control a "multi-page" application with multiple classes, please see: How to Integrate Multi-page Java Desktop Application from Multiple GUI Classes
I would like to add components (JButton and JSpinner) to a JPanel which was created using Netbeans GUI builder. This panel uses GroupLayout, and I can't seem to use add() to add a component. Is there any way to either add something to a panel which has a GroupLayout, or change this panel to a FlowLayout?
It's definitely not an easy thing to do. It depends on where you want to add those components. I usually reserve an empty placeholder JPanel with GUI builder, and then add components to that panel, using whatever layout I want. However, this only works when you want to add components in one place. If they are scattered around the GUI, it may be not that easy.
Another options is to migrate to manual GUI creation, possibly using Netbeans-generated code as a starting point. But depending on how complex your GUI is, it may be a tedious work.
There is an option if you right-click the JPanel to change it to a FlowLayout (Set Layout). This fixed all the problems I was having.
I am creating simple application in java - Eclipse - WindowBuilder Editor. JFrame`s contentPane has JGoodies FormLayout in which I have to place 3 or 4 Panels - depending on mode.
It is proper way to make if construction that decides if content pane will be divided 1x3 or 1x4(facilitation because between all I use relatedgaps and so on..)?
I am not sure if this is good approach but I do not know how can I do this in other way than if construction. It has to be practical and flexible approach - to handle resizing the window, et cetera..
Common approaches for dynamic layout include these:
Use revalidate(), and possibly repaint(), to layout a Container again after adding or removing components, as shown here.
Replace the layout and validate() the Container, as shown here.
Use CardLayout to replace one panel with another, as shown here and here.
I have developed a simple music player in Java which can play any given playlist or simple mp3 song.
For now i have worked all things out in plain JPanels. GUI doesn't look neat.
I need to revamp the GUI using tabbed pane. How this can be achieved using existing JPanels without affecting current functionality?
Also, i am not able to figure out shall i go for Tabbed Pane or Card Layout?
http://docs.oracle.com/javase/tutorial/uiswing/layout/card.html
Because a tabbed pane provides its own GUI, using a tabbed pane is simpler than using the CardLayout class.
"Also, i am not able to figure out shall i go for Tabbed Pane or Card Layout?"
It really depends on your preference of the look of your program. The two layouts perform very similarly, though CardLayout is a little bit more code, though at all not difficult. If you don't want the tab look, which I don't see why you would, for a game, then go with CardLayout
"How this can be achieved using existing JPanels without affecting current functionality? "
You need to create separate JPanel for each containment of whatever components you want in each tab. Then just add those JPanel to the JTabbedPane. It shouldn't break any functionality, just the look. Components from another panel should not be affected, you just won't be able to see any changes made, unless that other panel is in view.
If you want to go with CardLayout you can look at the tutorial
I have search on internet and found a lot of information about drawing in Java. But when I add new JFrame class in Netbeans then I cannot add a own JPane in the JFrame. Hopefully somebody can help me with this issue/question.
Drawing the JPane is possible when I make a new JFrame in a class, but I would like to use the design view in Netbeans. That is not possible when I make a new JFrame.
I look forward to receiving an answer.
It looks like you made a JFrame instance yourself, and then tried to add a JPane(l) to it using NetBeans swing builder. This wont work. Try creating a new swing class using the swing builder and let netbeans make the Jframe.
Also, make sure you set a correct layout for your JFrame.
Also, like BenCole said, I think you mean a JPanel, not a JPane.
As an alternative, create your own top level container and add your designer panel to its content pane. Here's a simple example. In this way you can limit the use of the designer to a single panel, while you explore other layouts.