How to make my JFrame auto-resizable? Size depends on existing components in the frame, but the user can add more components dynamically.
You could use the JFrame.pack() method, that according documentation:
Causes this Window to be sized to fit the preferred size and layouts
of its subcomponents.
See the Nested Layout Example for both dynamically added components (labels added using a button - in a scroll pane), as well as a resizable GUI.
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I´m using this code for starting the desktopPane maximized
this.setExtendedState(MAXIMIZED_BOTH);
When the jDesktopPane displays it's maximized, but the panels inside are the same size and I don't know how to resize them. I want the panels to resize too
For the JPanel inside your JDesktopPane, you need to implement layout manager. Then those panel resize based on the layout manager. For example, Here is tutorial how to use FlowLayoutManager
I implemented Layout Manager, but used Free Design Instead of Flow Layout, it was easier to me and I got the results I wanted
I have a resizable JFrame and (since I do not know much about Layouts yet) set its JPanel Layout to null.
Is there a way I can tell my program to resize each of its components' size relative to the window's size?
e.g. I have a 200x100 default sized JFrame, on which a button is 20x10. If I resize the window to 400x200, I want the button to be (still on the same position relative to the window's edges) resized to 40x20.
If that works is there a way to do the same thing with fonts? E.g. size 11 on 200x100 but something like size 14 on 400x200.
Regardless of what convention you use to scale your components and font, it is not a good idea to set a layout to null. Widgets behaving strangely when using "setlayout(null)" will give insight to why this is error prone. Automatically size JPanel inside JFrame might help with scaling when you change the size of the JFrame manually.
Add a ComponentListener to your frame and create a table with the defaultSizes of the Components for a specific windowsize. The componentResized(ComponentEvent e) will be called each time the window is resized. Inside it, you can resize the components. Or you implement your own LayoutManager.
I am creating one java Application which includes the JDesktopPane and JInternalFrame.
And I am using GridLayOut to set JInternalFrame
The Issue is I can't resize the JInternalFrame as per the GridLayout size
Below is One Screen Shot of Application
I want the JInnernalFrame as the grid size.
Please do help me.
Because JInternalFrames are suppose to be added to and managed by a JDesktopPane
Take a look at How to Use Internal Frames for more details
JDesktopPane isn't suppose to have a layout manager, the GridLayout is taking control and making decision about how the JInternalFrame should be managed.
Simple answer is, don't use a layout manager with a JDesktopPane. Instead use JInternalFrame#pack to size the frames, setLocation to place it and don't forget to make it visible
I want the JInnernalFrame as the grid size
Either don't use JInternalFrames this way, or provide functionality that can mimic this when you want it. Layout managers tend to be to rigid for providing both these functionalities
I'm posting this question because I'm new to programming at the present time and I have a pet peeve that when I create the app I don't want the objects to go across the entire window.
I use GridLayout the most often and I was wondering if there was a way to make components such as a JTextField or JTextArea NOT span the entire window, leave a little space on both ends?
You can add a component to a JPanel, which uses a FlowLayout by default and all components are displayed at their preferred sizes. Then add the panel to the layout using the GridLayout. The panel will increase in size but the components on the panel will stay at their preferred size.
I have an application where I want that the user is able to choose between normal and advanced settings. Now if the user checks a JCheckBox and the advanced settings should disapper the problem starts.
My idea was to set all unnessecary swing components (JScrollPane, JLabel...) invisible and then find a method of JFrame which fits the window to the VISIBLE components.
My question is if there is such a method?
... and then find a method of JFrame which fits the window to the VISIBLE components. My question is if there is such a method?
Yes, there is such a method, and it is called pack().
This will cascade through the layout managers of all the containers held by the top-level window, asking them to re-lay out their visible components, resizing components to their preferred sizes as based on the components and the layout manager requirements, and eventually resizes the top-level window to fit the containers and their components.
1. You can use setVisible(boolean b), to make the component visible and invisible.
2. You can check that if the component is visible or not using isVisible()
3. You can then use the pack() method, pack() method gives sets the frame size as per need
I think you can wrap the advanced content in a panel (if possible) and remove that panel from frame using this.remove(component) then use this.pack()
and you can do the opposite on showing them, this.add(...) then this.pack() again