Just found a code snippet which might help if you want to wrap those misbehaving LAF provided icons more often: /** * Some ui-icons misbehave in that they unconditionally class-cast to the * component type they are mostly painted on. Consequently they blow up if * we are trying to paint them anywhere else (f.i. … Read more
JFrame is a normal window with its normal buttons (optionally) and decorations. JDialog on the other side does not have a maximize and minimize buttons and usually are created with JOptionPane static methods, and are better fit to make them modal (they block other components until they are closed). But both inherit from Window, so … Read more
Something like this? BorderLayout layout = (BorderLayout)panel.getLayout(); panel.remove(layout.getLayoutComponent(BorderLayout.CENTER));
Calling setOpaque(false) on the upper JPanel should work. From your comment, it sounds like Swing painting may be broken somewhere – First – you probably wanted to override paintComponent() rather than paint() in whatever component you have paint() overridden in. Second – when you do override paintComponent(), you’ll first want to call super.paintComponent() first to … Read more
It doesn’t work because you didn’t attach the ScrollPane to the JFrame. Also, you don’t need 2 JScrollPanes: JFrame frame = new JFrame (“Test”); JTextArea textArea = new JTextArea (“Test”); JScrollPane scroll = new JScrollPane (textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); frame.add(scroll); frame.setVisible (true);
When using GridBagLayout for a tabular display of JLabel : JTextField, I like to have a method that makes my GridBagConstraints for me based on the x, y position. For example something like so: private GridBagConstraints createGbc(int x, int y) { GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = x; gbc.gridy = y; gbc.gridwidth = 1; … Read more
It is very well possible! One has to install JavaFX 2.0, and somehow manage to have jfxrt.jar in the Classpath. The following code renders a JFXPanel inside a JFrame. The JFXPanel contains a WebView which loads google.com. However, at least on my machine, the WebView feels rather sloppy. I’m working on Mac OS X 10.6; … Read more
You can add any component to a JOptionPane. So add a JEditorPane which displays your HTML and supports a HyperlinkListener.
According to my profiler, the operation spends most of the time in the method Thread.holdsLock, which can be indeed a costly operation, which is called by Component.checkTreeLock which is called indirectly by Component.updateCursorImmediately. Generally, you can avoid costly visual updates when updating multiple components by calling getContentPane().setVisible(false); right before the operation and getContentPane().setVisible(true); right afterwards, … Read more
Here is pretty nice example http://www.leepoint.net/GUI/structure/40mvc.html I tried to find simplest possible to let you feel the idea. Anyway I don’t like the: Seems to me there is not a defined MVC architecture in Java. You can use MVC, MVP and whole other patterns in various different languages. Java has nothing to do with MVC, … Read more