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Java swing - creating text field on button's place

When specific action is performed, I want to replace button with text field. I know that I have to call button1.setVisible(false); but I don't know how to create text field on the exact same place. I am using NetBeans designer, if you can give me a hint, how to add 2 components at same place, and switch between then, something like switching between layers in photoshop, if something like that is possible, would be great. Thanks

For many components in one space, use a CardLayout as see in this short example.

Is there a way to do this with Java textareas?

I have a question relating to java textarea. I know I could probably accomplish a textarea by using swing, but there is a feature in my textarea I need that I don't know if the one in swing can do for me. I need it so that there is boolean H = false, when H = true and someone is typing, the text they type is hightlighted (simply want a color overlayed, not selected), and I need a way to save this highlight and be able to parse the text area for this highlight. I plan on using some Java Canvas to get what I want done, not including the textarea. I know if I wanted I probably could just program the textarea in the canvas, but I feel like this would be really complicated, and if I should use canvas is there any way I can make it so I can still click and drag to select areas of text?

Custom swing JTextComponent [closed]

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Closed 10 years ago.
I want to create a JTextArea which looks like JTextArea, acts like JTextArea, responds like JTextArea, speaks like JTextArea, moves like JTextArea, etc, but is not JTextArea.
To make it short, I'd like to create a custom swing component based 100% on JTextArea. Once I do that, I'll be able to change different otherwise hard-coded properties of a JTextArea and make my own customised JTextArea. There are no predefined swing components that are designed the way I need them to be, but JTextArea is the closest, that why I choose it.
I'd like to change the spacing inbetweem the rows of a JTextArea. And no, I don't want to use JtextPane, I've tried, it doesn't work with my program, it calcualtes it position diferently, it look diferently, and applying the JtextArea border just messes thing up further.
I'm not trying to extend the JTextArea, I'm trying to create a custom JTextArea, as in custom swing component, with changed hard-coded properties that are not configurable trought JTextAreas methods.
However, I have no idea how to do it. I've been looking it up on the internet, but there is only an extensive guide about building your own component from stracth...
Figuring that out will take a lot of time and will not really solve my problem.
Only thing I have to do is create a class (or several classes) that will contain everyting that builds JTextArea. Start from JTextComponent level and copy all the lower level classes that are used in creating JTextArea. I'd also like to note that I use Nibus look and feel, I think that there may be some classes that would need to be included for the custom JTextArea to function properly under that LAF.
I've looked into the swing source code, and it's full of everyting. Figuring out what classes or their parts are used in creating a JTextArea would be a time consuming nightmare, given that I have no knowledge about core swing structure and mechanics.
That's why I'm asking somebody who has the knowledge to at least list the classes that I need to replicate the JTextArea, and I'll then figure out how to compose them.
Because, if I start learning now about swing core mechanics, it'll take days and weeks before I figure it all out, but for someone who knows, it would take only a couple of minutes to list all classes that I need to focus my attention onto.
I'm trying to take a shortcut here. I don't want to fully understand swing, I just want this thing to work. Default spacing is one pixel too low, and all I want to do is just make it that pixel higher. I don't want to know how the painter paints component onto screen, I just want to know where is it called from and what does it call itself...
Thanks to anyone who takes the time.

I'd like to change the spacing inbetweem the rows of a JTextArea
My first thought was that overriding javax.swing.JTextArea#getRowHeight would be sufficient. The javadoc clearly states
Defines the meaning of the height of a row. This defaults to the height of the font.
So I was hoping that by overriding this method, you would adjust the definition and you would get more spacing between the rows. Bummer, didn't work. A quick search on the usages of that method in the JDK revealed the same. It is mainly used to calculate some sizes, but certainly not used when painting text inside the component.
By looking at the source code of the javax.swing.text.PlainView#paint method, I saw that the FontMetrics are used, and those you can easily override in the JTextArea. So second approach was to extend the JTextArea (bwah, extending Swing components but it is for a proof-of-concept)
private static class JTextAreaWithExtendedRowHeight extends JTextArea{
private JTextAreaWithExtendedRowHeight( int rows, int columns ) {
super( rows, columns );
}
#Override
public FontMetrics getFontMetrics( Font font ) {
FontMetrics fontMetrics = super.getFontMetrics( font );
return new FontMetricsWrapper( font, fontMetrics );
}
}
The FontMetricsWrapper class basically delegates everything, except the getHeight method. In that method I added 10 to the result of the delegate
#Override
public int getHeight() {
//use +10 to make the difference obvious
return delegate.getHeight() + 10;
}
And this results in more row spacing (and a caret which is way too long, but that can probably be adjusted).
A little screenshot to illustrate this (not as nice as some of the other ones, but it shows that this approach might work):
Small disclaimer: this feels like an ugly hack and might result in unexpected issues. I do hope somebody comes with a better solution.

Swing JTable custom rendering

I have this kind of progamming task without JavaFx, instead it's Java Swing. I realized my knowledge is still limited.
I have one single JTable.
But, within this JTable I need a custome Cell Renderer.
The goal is to make this kind of JTable: Example image
My current solutions are: Example Image
Create a Single JTable:
get each Column and set its CellRenderer with a custom Renderer (below).
Create a new Class implements TableCellRenderer:
return different JPanel inside getTableCellRendererComponent
method using switch case (as column counted).
After hours, and hours, I think my current solutions is quite daunting tasks. Thus, My question is:
What are the simplest method of creating this Custom JTable to achieve the main goal as mentioned above?

you have two options
1) JPanel nested another JComponents and solve that by using standard LayoutManagers note scrolling isn't natural nor nice
2) JTable with JPanel can solve that, notice about scrolling inner JScrollPane inside another JScrollPane

I've been facing this problem for a while, and I decided to do it myself. Extending the existing implementation of a table, adding some concepts for what I expect from a table, and writting some editors/listeners for that. All the same, but with a treetable.
I'm working on this project called SUMI.
It contains a java package (ar.com.tellapic.sumi.treetable) that is an extension of a JXTreeTable from SwingLabs.
The project is being developed and I didn't provide any documentation yet. You can do what you want by creating a renderer and if needed, an editor, for lastly attaching actions to each object.
If you decide to use it and you need help, email me, I'll help you without any problem.
Or, you could read the source by your own.
Regards,
EDITED (again):
To clear a little bit this answer, I've just created a wiki page in the project wiki and put the relevant code there. If someone feels that the code should be inserted here, please let me know.
Basically, I try to explain how to find a straight solution to the renderer/editor problems you may find using JTable with your specifics needs by using part of my project, in order to get something like this:
Note that the screenshot was taken after clicking on the respective tick-button.

Once you create a nested panel for one row, as suggested by #mKorbel, you can add any number of them to a GridLayout(0, 1) in a JScrollPane. If rendering many rows becomes an issue, you can adopt the same approach used by JTable, illustrated here.

Even though, JTable can be customized to whatever you desire through cell renderer and cell editors, it is never preferred because you have to do a lot of messy codings for that. Instead, for your problem, I suggest to use JScrollPane and add your component (view panel as your sample jTable ) to its viewPort.
For this implementation, represent each rows with your custom class that extends JPanel. And add the required row components (that may be any components like jlabel, jtextfields or even jpanel too) in it. For the simplicity, you can use null layout for the row panel and add the components at any location you want.
I hope this will help you workout with your problem. If you got any problem in this implementation, feel free you ask again.

How do I prevent button surround from displaying in Java?

Sorry for the odd choice of words for the title, however, "border" seems to be the inappropriate term. While it is true that the visible line surrounding an icon in a JToggleButton can be made invisible by using setBorderPainted(false), the same is not true for JCheckBox and JRadioButton.
I can not use the JToggleButton and therefore need to use either the JCheckBox or JRadioButton (or some derivative of JToggleButton I am not aware of), but need the square or circle, respectively, to be non-visible when there is no icon on the button. Also, using setVisible(false) eliminates the button from the layout, however, I need the space to be reserved and not have the component layout change (using GroupLayout).
Any suggestions? Am I going to have to create a custom renderer? I will be looking at that in the mean time.

The route into this would be through customising the look at feel by changing some of the UI properties in the UImanager (the sort of thing that allows you to make simple tweaks with fonts and colours and presumably the images used for the checkboxes or radiobuttons) -- but it's many years since I last did that sort of thing and can't remember the details.
A little Googling turned up this project to inspect current property values, so might at least help with indicating the right part of the APIs to be looking at.

You have to choices here:
1) Customize Look and Feel as described in previous entry.
2) Create your own custom controls by inheriting from existing ones and overriding component painting.

I found a cheap and easy (read hack) for this. I created an empty transparent icon and used it when I didn't want any item to be displayed.