How should I run animation in a Swing applet? I have an animation thread performing active rendering and it initially animates fine. Sometimes (anywhere from 1 minute to 2 hours later) it begins to fail to update the screen and only the sounds occur. I believe this is due to the fact that the paint is not performed from the EDT causing ...
I want to make a component to occupy the maximumAvailableHeight of the Container. In the code that I have pasted below for example, I have made the root frame to be 800,600. I want to set the height/width of only that frame (and I do not want to try and pixelify its children). If I run this, I see a badly aligned UI. Firstly, I want a p...
I am currently working on a project in which I have a Java GUI class and another class which contains its relevant methods. I want a text area in the GUI to be updated with the content of a string in the other class whenever it changes. What is the easiest way to watch for these changes? Cheers! ...
Hi all, I'm trying to scale a rectangle from its center using AffineTransform. I'm sure the solution is obvious but I cannot make it work ! Here is what I've tested so far... import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.geom.AffineTrans...
I've written a MnemonicsBuilder class for JLabels and AbstractButtons. I would like to write a convenience method setMnemonics( JFrame f ) that will iterate through every child of the JFrame and select out the JLabels and AbstractButtons. How can I obtain access to everything contained in the JFrame? I've tried: LinkedList<JLabel> h...
I've been building a test application that works with a database that up until recently has been without a UI. I'm adding one now. Problem is, the JFrame is launched in another thread and I need my database connection to close when that thread closes (when the UI closes, I should say). How do I do this? Also, what happens to the appl...
I create a graph based visual applicaion using a Netbens Visual Library. Can somebody post a code sample that enables a selection of nodes with mouse clicks (and Ctrl key fo multiple selection) ? Thanks in advance. ...
Hi there, When calling persist the setId method never gets called which in turns causes the firePropertyChange not to execute. I need to fire the changeSupport method because I have functionality that dependants on the state of my entity. public void setId(Long id) { Long oldId = this.id; this.id = id; changeSupport.firePro...
What is the use of Container in Swing? ...
My Project is in Java Swing. I have a JPanel on which I am adding some images with .png extension (which are on JLabels) at center. Now I want to add a line which will be partially on the JPanel & partially on that image. Currently when I am adding a line, JPanel shows the line but when I resize the image & drag it to the image, the i...
Hello, I have a JTree that implements multi selection logic. This works great when I do all my selections using the mouse + Ctrl key pressed. If user makes selections with the Ctrl key unpressed it breaks my logic. I can't really see why it breaks but I think that a possible solution is to always indicate the TreeSelectionModel that t...
Why is Java's GUI development platform named "Swing"? What does it mean? ...
I know they announced in February that it was going to transition to a community-developed model over the next year... but right now, I can't find it on their website, at all, let alone version 4.5 that was supposed to be released this month. I am about to embark on the GUI portion of a major project, and while I had considered using QT...
import java.awt.*; import javax.swing.*; public class import javax.swing.*; import java.awt.*; import javax.swing.tree.*; import javax.swing.event.*; /*<applet code="JT.class" width=200 height=300> </applet>*/ public class JT extends JApplet { JTree tree; JTextField box; Object nodeInfo; String node1; public voi...
import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import java.util.Random; /** * */ public class GUI { private static final int BTN_MAX = 8; private JFrame frame; private JPanel panel; private JPanel scores; private JButton[] buttons; private ImageIcon[] icons; ...
I have a JButton which, when pressed, changes background color from active to normal: final Color activeButtonColor = new Color(159, 188, 191); final Color normalButtonColor = new Color(47, 55, 56); I want to fade the active button color back to the normal button color when a specific task has finished executing. I'm using SwingWorke...
I'm looking for a decent hex viewer (read-only; I don't need an editor) GUI component that I can use within my Swing GUI. Is there anything out there? I suppose I could write my own, but am hoping to avoid doing this. (also it would be nice to be able to render certain bytes as colorized/bold to highlight particular bytes in question.) ...
OK, this problem is out of my league. I'm trying to implement a GUI widget in swing that allows files to be dropped onto a JTable, and allows the rows of the JTable to be dragged for re-sorting. Think VLC's playlists or the one in iTunes. I got dropping files from the OS (Explorer, Finder, etc.) working just fine, but I'm having an impo...
There is strange behaviour of JTextArea when displaying japanese characters - I get well-known blank rectangles instead of kanji. The mostly strange thing is that JTextField displays them perfectly (in both cases I use "Tahoma" font family). Also, if I put this code: Font f = new Font("123", Font.PLAIN, 12); // This font doesn't ex...
I'm trying to use Nimbus Look and Feel and I can't simply plug it in to replace other Look and feel because it adds some external padding around each component. So, I would like to remove this padding. This is the list of defaults that can be changed, however the following code changes nothing. UIManager.put("Button.contentMargins", ne...