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I was developing an java swing application to add view and modify the list of medicines.While adding the medicines it should show the list from the database(like google search box).For example if we press "p" it should show 'paracetamol' from the database.
You should implement a change listener on the text input box, when the text is changed, run a query to the database with the contents of the input box.
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How I can use this site result in my android app? I want send math expression to this site get answer in my app and display result to user?
You can actually code the relevant site as the required function. But if you want to use it, you can use it as a WebView and capture data about jsoup.
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To set the default button to suppose jButton4 the following code has to be used: this.getRootPane().setDefaultButton(jButton4); But where to add this?
What all I tried:
I tried to add it in main function but it gave me an error, I tried to put it inside the button action performed block but it did not work, I tried to put it just before the main function it gave me an error.
Question: So where do I put this line of code so it works? I am using Netbeans GUI to make the program.
You could add this line everywhere you want to set the default button (a button click, where you create your UI etc.).
I think a nice place is where you create your UI elements.
In your case it would be, just after initComponents();
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How would I get user input from a jtextfield in my GUI? Would I use java.util.Scanner or another class?
JTextField a = new JTextField("Input Here")
//Put calculation formula here
A GUI is an event driven environment. You will need to listen to the events that the component is producing.
For example, JTextField raises ActionEvents (amongst others) which tells you that the user has (on most systems) pressed the Enter key.
Start by taking a look at How to use Textfields
When your ready, you can use getText to get the String value that the user entered...
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I created the Tab panel which is having 3 tabs, and in each tab I'm displaying chart.
My problem is I want to use arrow key to move a chart back and forth.
But when I pressed arrow it switches the tab.
How I can remove this default behavior of Arrow key of swiching tabs?
You have to unregister keybinding.
For example:
tabComponent.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke("LEFT"), "none");
tabComponent.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke("RIGHT"), "none");
You may want to take a look at this How to use KeyBindings.
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I wish to create a button exactly same as this (from iOS5).
You will have two images, for ON and for OFF.
Whenever you click the button, you will switch images with button.setImage(..).
Swing constraints:
Button will still be rectangular, even though the image is oval
Animation possible, but quite hard AFAIK. From the way you asked your question, I think it will take you a while to study swing more
In swing, there is JToggleButton which can have two status. However, if you want the button of the same shape and the same visual effect, you should implement it.