To get DEFAULT color that panel will use when it is created use: Color color = UIManager.getColor ( “Panel.background” ); To get CURRENT panel background use: Color color = panel.getBackground (); For a complete list of UIManager colour properties, see http://alvinalexander.com/java/java-uimanager-color-keys-list.
JTextArea is meant to entertain Plain Text. The settings applied to a single character applies to whole of the document in JTextArea. But with JTextPane or JEditorPane you have the choice, to colour your String Literals as per your liking. Here with the help of JTextPane, you can do it like this : import java.awt.*; … Read more
Have a look at this source: import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Tester { public Tester(){ JComboBox box = new JComboBox(); box.addItem(“One”); box.addItem(“Two”); box.addItem(“Three”); box.addItem(“Four”); box.addItemListener(new ItemListener(){ public void itemStateChanged(ItemEvent e){ System.out.println(e.getItem() + ” ” + e.getStateChange() ); } }); JFrame frame = new JFrame(); frame.getContentPane().add(box); frame.pack(); frame.setVisible(true); } public static void main(String … Read more
Try this: mytable.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent mouseEvent) { JTable table =(JTable) mouseEvent.getSource(); Point point = mouseEvent.getPoint(); int row = table.rowAtPoint(point); if (mouseEvent.getClickCount() == 2 && table.getSelectedRow() != -1) { // your valueChanged overridden method } } });
I think the simplest way to build a model from an instance of ResultSet, could be as follows. public static void main(String[] args) throws Exception { // The Connection is obtained ResultSet rs = stmt.executeQuery(“select * from product_info”); // It creates and displays the table JTable table = new JTable(buildTableModel(rs)); // Closes the Connection JOptionPane.showMessageDialog(null, … Read more
You need to add a filter: JFileChooser jf = new JFileChooser(); FileNameExtensionFilter filter = new FileNameExtensionFilter(“TEXT FILES”, “txt”, “text”); jf.setFileFilter(filter);
Outline Here are the steps to follow. Read the picture as a BufferedImage. Resize the BufferedImage to another BufferedImage that’s the size of the JLabel. Create an ImageIcon from the resized BufferedImage. You do not have to set the preferred size of the JLabel. Once you’ve scaled the image to the size you want, the … Read more
If you want this effect then you need to utilize the GridBagLayout. http://download.oracle.com/javase/tutorial/uiswing/layout/gridbag.html Have fun with that one =P EDIT: You can work around the problem by employing a mixture of FlowLayout and GridLayout to get a similar effect. However, this solution will become extremely tedious and messy as your layout complexities become bigger.
The problem can be solved by using myLabel.setAlignmentX(Component.CENTER_ALIGNMENT);. It works with JLabel, JButton and JRadioButton.
keyPressed – when the key goes down keyReleased – when the key comes up keyTyped – when the unicode character represented by this key is sent by the keyboard to system input. I personally would use keyReleased for this. It will fire only when they lift their finger up. Note that keyTyped will only work … Read more