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I have an application where I implemented an onKeyPressed event listener for a text field.
In this listener I do a search for results like the input inmy database.
Is there a way that I can show an autocomplete list for the text box displaying the results of the database search?
If you are using swing you can attempt to link the textbox with a list and then you can achive autocomplete functionality using the swing autocomplete package.
Also see this question. Or this one.
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i want add symbols on left top keys like any keyboard averaibel now in stories
like:enter image description here
On Android you can't. Keyboards are a separate app, and decide what keys to display on their own. There is no API to even suggest special keys, much less force them.
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I want to create a JTextField to be auto updated everytime the users types a value (without pressing Enter key) into another JTextField.
In instance for what I want my program to be is google currency converter.
You add a DocumentListener to the Document of the text field.
An event will be generated whenever text is added or removed from the text field.
Read the section from the Swing tutorial on How to Write a DocumentListener for more information and a working example.
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I am using JPopup menu to implement an autocomplete model in java. everything works fine but the problem is when showing a lot of data that could be irritating. How could I implement arrows for up and down and limit the number of items to let's say to 5?
Is there any better approach for autocomplete model?
You essentially want what a JComboBox does. See BasicComboPopup What you would basically do is wrap your popup in a JScrollPane
Check out Darryl's Menu Scroller.
It has a few features you can customize:
the number of items to display
fixed items at the top/bottom
scrolling speed
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I am developing a web-based POS,
I have a grid of items which can be purchased.
I want to display the name of the chosen Items
in a text area, as they are being selected.
How can I do that? Java Label? HTML Text Area?
I am a bit lost.
Thank You.
Take a look at this tutorial on Oracle's site. Intially you can set the text value in the constructor but as you add items to your transaction, you can use the append() method to add more lines to the textarea.
You could use a JList which will allow you to add items to a list. It will also allow you to customise the way that the content is rendered as well.
Take a look at How to use Lists
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my snapshot http://postimg.org/image/fi1bwpfoz/ : how can make similar like menu bar as shown in snapshot. is there any solution for that.
A JMenuBar is just a swing component, so you can change the layout as needed to center it. This post shows an example of how to do it http://java-demos.blogspot.com/2013/11/how-to-place-jmenu-at-center-of-jmenubar.html. You could do the same thing on an internal frame as well.