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Search found 269 results on 11 pages for 'actionlistener'.

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• how to run/compile java code from JTextArea at Runtime? ----urgent!!! college project

  - by Lokesh Kumar

  I have a JInternalFrame painted with a BufferedImage and contained in the JDesktopPane of a JFrame.I also have a JTextArea where i want to write some java code (function) that takes the current JInternalFrame's painted BufferedImage as an input and after doing some manipulation on this input it returns another manipulated BufferedImage that paints…

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• Read / write program in Java using JFileChooser

  - by Casper Marcussen

  Didn't want to bother people in here, but since I am under a time pressure, I am desperate to get help. My questions is how to link the file choosen from a JFileChooser to a file, and how to convert it to string being able to display and edit it in a TextArea. I have the GUI set up using swing, but the link between actionListener and the…

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• Why is internationalization not working properly? JSF

  - by Nitesh Panchal

  Hello, This is my messages_en_US.properties file in WEB-INF/classes folder :- Login=Login And then i created messages_fr_FR.properties :- Login=frenchLogin Then in my JSF page i wrote this :- <f:loadBundle basename="messages" var="msg"/> <h:commandButton id="btnLogin" value="#{msg.Login}"…

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• How to check all check boxes at a click of a button

  - by LivingThing

  I am new to Swing, UI and MVC I have created a code based on MVC. Now my problem is that that in the controller part i have an actioneventlistener which listens to different button clicks. Out of all those buttons i have "select all" and "de-select all". In my view i have a table, one of the column of that…

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• Javax Swing Timer Help

  - by kap

  Hello Guys, I am having some problems concerning starting javax.swing.Timer after a mouse click. I want to start the timer to perform some animation after the user clicks on a button but it is not working. Here are the code snippets: public class ShowMe extends JPanel{ private javax.swing.Timer timer;…

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• adjust selected File to FileFilter in a JFileChooser

  - by amarillion

  I'm writing a diagram editor in java. This app has the option to export to various standard image formats such as .jpg, .png etc. When the user clicks File-Export, you get a JFileChooser which has a number of FileFilters in it, for .jpg, .png etc. Now here is my question: Is there a way to have the…

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• JSF + PrimeFaces: `update` attribute does not update component

  - by Harry Pham

  Here is my layout <div id="mainPanel"> <div id="padding"> <h:outputText id="text" value="Personal Feed" rendered="#{Profile.renderComment}"/> </div> <div id="right"> <h:form> <p:commandButton value="Update"…

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• Object can not be resolved.

  - by Gabriel A. Zorrilla

  I have this code: public class Window extends JFrame { public Window(){ ... JButton button = new JButton("OK"); getContentPane().add(button); ButtonHandler handler = new ButtonHandler(); button.addActionListener(handler); ... } private class…

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• Can a user-chosen image be inserted directly into a JEditorPane?

  - by JIM

  What I am trying to do is open up a JFilechooser that filters jpeg,gif and png images, then gets the user's selection and inserts it into the JEditorPane. Can this be done? or am i attempting something impossible? Here is a sample of my program.(insert is a JMenuItem…

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• How do I prevent my form from freezing when it is loading an image from the web at the click of a button?

  - by Vimal Basdeo

  I want to display an image from the web to a panel in another Jframe at the click of a button but whenever I click the button first the image loads and during this time the current form potentially freezes and once the image has loaded the form is displayed with the…

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• Update JProgressBar from new Thread

  - by Dacto

  How can I update the JProgressBar.setValue(int) from another thread? My secondary goal is do it in the least amount of classes possible. Here is the code I have right now: **Part of the main class....** pp.addActionListener( new ActionListener(){ …

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• Can you cast an object to one that implements an interface? (JAVA)

  - by DDP

  Can you cast an object to one that implements an interface? Right now, I'm building a GUI, and I don't want to rewrite the Confirm/Cancel code (A confirmation pop-up) over and over again. So, what I'm trying to do is write a class that gets passed the class it's…

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• NullPointerException Java help

  - by KP65

  Hello guys. I've been tearing my hair out the past few hours trying to solve this problem. Every time I click on a JButton which should open a JFrame(And it does), i get a stacktrace saying I have a null point exception at these bits of code: In class A i have: …

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• Panel is not displaying in JFrame

  - by mallikarjun

  I created a chat panel and added to Jframe but the panel is not displaying. But my sop in the chat panel are displaying in the console. Any one please let me know what could be the problem My Frame public class MyFrame extends JFrame { MyPanel chatClient; …

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• Java Box Class: Unsolvable: aligning components to the left or right

  - by user323186

  I have been trying to left align buttons contained in a Box to the left, with no success. They align left alright, but for some reason dont shift all the way left as one would imagine. I attach the code below. Please try compiling it and see for yourself. …

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• Add a listener inside or outside get method

  - by James P.

  I'm learning Swing and have composed an interface using a series of get methods to add components. Is it a good practise to add a Listener inside a get method as follows? I'd like to make things as decoupled as possible. private JButton getConnectButton() {…

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• loading a file and getting its contents crashes on me.

  - by Richards

  private class Lytterklasse implements ActionListener{ public void actionPerformed(ActionEvent e) { JFileChooser chooser = new JFileChooser(); FileNameExtensionFilter filter = new FileNameExtensionFilter( "Sudoku Tekstfiler", "txt"); …

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• java timer and socket problem

  - by Guru

  Hi there, I'm trying to make a program which listens to the client input stream by using socket programming and timer but whenever timer executes.. it gets hanged Please help me out here is the code... private void…

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• Is there a version of postActionEvent for KeyEvent (specifically for a JTextArea)?

  - by Brian Pelc

  I'm writing a program that contains multiple JTextFields and 2 JTextAreas within an input panel. I have a submit button on the bottom. I have it set up so when a user types something into each field (including the…

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• Threads to make video out of images

  - by masood

  updates: I think/ suspect the imageIO is not thread safe. shared by all threads. the read() call might use resources that are also shared. Thus it will give the performance of a single thread no matter how many…

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• How can I fade in a JPanel & children?

  - by Christian 'fuzi' Orgler

  I know that I can fade in a panel, by adding the alpha value to the background color & a timer. But how can I fade in a panel with child components (like a JLabel)? EDIT _fadeTimer = new Timer(40, new…

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• Distinguish between a single click and a double click in Java

  - by user552279

  Hi, I search the forum and see this codes: public void mouseClicked(MouseEvent e) { if (e.getClickCount() == 2) { System.out.println(" and it's a double click!"); …

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• can i add textfields in the code other than in the init?

  - by themanepalli

  Im a 15 year old noob to java. I am trying to make a basic program trader that asks for the stock price, the stock name, the stock market value and the type of order. Based on the type of order, i want a new…

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• Click event of buttons is not fired when it causes onChange event of textbox is fired first

  - by bakkujp

  Hi All, I have a textbox like below <h:inputText value="#{bean.strQuantite}"> <a4j:support actionListener="#{tabacListCommandeAltadisDetailBean.actionListenerQuantity}" …

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• how do i close a frame yet open a new frame?(revisited)

  - by altvali

  I'm new at Java and I'm trying to do what the title says, my application has page A, a jpanel with some controls and a specific button, and when the user clicks the button i want page A to disappear…

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