I have to create a menu bar with a logo panel at far end of the bar and I have done it. But It's required that logo must have "appearing" effect? How can I do it?
I'm not exactly sure what you mean with "appearring effect", but if you want to create some color effects, you could extend the JLabel class and add some custom Color/Image Effects. Maybe this example for creating a JLabel with various effects gets you started.
See also How to animate a JLabel
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I'm still new at Java and having trouble at adding buttons using another JButton, the problem is that I can able to add them but right after I resize the form only. It means that the frame did not shown any JButton added to the panel unless I resize it.
right after I posted it, they already recommended related topics here and it was resolved now thanks!
just need to add 'revalidate();' at the component for it to dynamically change along the actionListener.
I extended JButton so it would fit my needs. I have one JTextArea and two JLabel components inside of my new class. The problem is, that I cannot click through JTextArea. So, when mouse is in JTextArea bounds, the button is not responding. There is no problem with labels.
As on screen. There are four buttons. Each one is a separate yellowish rectangle. When mouse is over JTextArea's gray rectangle, I cannot press the button. I need JTextArea because it supports multiple lines. Is there any option to make it not intercept the mouse?
It would be ok if I could attach ActionListener to JTextArea, but I can't. It cannot have this kind of listener.
You look to be trying to use a JButton in a very non-button way, including having it hold a JTextArea, and not looking at all like a button. If you want a clickable area that is not an identifiable JButton, then consider using a MouseListener instead. You would likely have to add the same MouseListener to the container JPanel and the JTextArea.
Take a look at Concepts: Editors and Renderers to understand the difference between a renderer and an editor.
A renderer is a "rubber stamp" of the component, it is simply "painted" onto the surface of the JTable and is not a real life component
You would need to implement a custom editor, which could translate the trigger event (in your case the MouseEvent) into a local context.
Take a look at TableCellEditor#isCellEdtiable which is probably the closest you will get to the source of the event which might trigger the cell to become editable.
JButton could be seeded with a HTML String (`"This is some text"), which would be capable of supporting multiple lines and line wrapping as well
Having said all that, you might want to seriously reconsider your design...
Quick question, couldn't find a definitive answer from searching so I thought I'd ask here. In my code I set a JLabel to an image and I would like that image to clear and disappear after I perform a certain action such as clicking a button.
JLabel one = new JLabel(ruby); //ruby is a seperate ImageIcon already defined.
I'm not sure what the command to clear the panel is, an answer would be appreciated! Thanks.
Assuming that the label is already on the screen and you have a reference to the label you should be able to either call remove(label) on the parent container that contains the label or label.setIcon(null) if you want to reuse the label. In either case, you may be required to call revalidate on the parent container
You may see this as a duplicate question but please here me out.
I have a JLabel with an image. This JLabel has a mouse listener binded to some function.
Is there any way to make the JLabel disappear (or technically, transparent) in order for the mouse listener function to be preserved?
I know I can set a transparent image as an icon to the JLabel, but I'm wondering if there's some kind of "toggle" function out there.
you could use yourLabel.setVisible(false); is not the same as dispose the frame; however, would you extend your question a little bit more or make it clearer?(I'm having a hard time trying to understand what do you want to do)
I am coding a piano in java using rectangles from the java.awt.graphics library. I am using a mouselistener to play the sound of each individual key when the mouse clicks a certain area on the JFrame.
How would I add a shape to the panel upon clicking, repaint, then repaint the keyboard back over top when the user releases the mouse?
Consider adding JLabels to a JPanel that uses GridLayout. Give each JLabel a MouseListener and either swap ImageIcons on mousePress/mouseRelease or change the JLabel's background with press and release. If you go the latter route, you'll want to make sure that the JLabels opaque property is set to true so that the background colors show.
Then for the black keys, you can add the above JPanel to a JLayeredPane and on top of this, add another JPanel that holds the black keys that function in the same way.
Also, you'll want to take care to "play" any notes in a background thread, such as can be obtained with a SwingWorker so as not to tie up the Swing event thread and completely freeze your program.
Consider solution: source
It might not be exactly what you're after, but it might give you an idea of how to approach your problem. It took me a long time to figure out how to use JLayeredPane without setting a null layout, but in the end this was the best I could come up with. Also, assumed some naming conventions for your sound files. :p