No, you can’t add components at a specific cell. What you can do is add empty JPanel objects and hold on to references to them in an array, then add components to them in any order you want. Something like: int i = 3; int j = 4; JPanel[][] panelHolder = new JPanel[i][j]; setLayout(new GridLayout(i,j)); … Read more
It’s not two competing mechanisms – a JPanel is a Container (just look at the class hierarchy at the top of the JPanel javadocs). JFrame.getContentPane() just returns a Container to place the Components that you want to display in the JFrame. Internally, it’s using a JPanel (by default – you can change this by calling … Read more
Never override paint() in JPanel rather paintComponent(..) Im not quite sure I understand however I made a short example which I hope will help. Basically it is a simple JFrame with a DrawingPanel (my own class which extends JPanel and the shapes are drawn on). This panel will create shapes (only 2 for testing) add … Read more
Swing components have no width or height until they’ve been rendered. This occurs if you call pack() or setVisible(true) on a root container. Consider placing your x y int initialization code in the componentResized method of a ComponentListener that is added to your JPanel. e.g., import java.awt.event.*; import java.awt.*; import javax.swing.*; public class TestLinePanel { … Read more
ImageIcon image = new ImageIcon(“image/pic1.jpg”); JLabel label = new JLabel(“”, image, JLabel.CENTER); JPanel panel = new JPanel(new BorderLayout()); panel.add( label, BorderLayout.CENTER );
You can use a BorderLayout for your JPanel and put the JMenuBar into the NORTH area of the panel with JPanel p = new JPanel(); p.setLayout(new BorderLayout()); p.add(menubar, BorderLayout.NORTH); JMenuBar is a JComponent and can be added to a Container like any other JComponent.
Here’s a problem: final Timer timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { Don’t use a java.util.Timer in a Swing program as you will have threading problems. Instead use a Swing Timer. Also, you’re making Swing calls in background threads and using Graphics object obtained by calling getGraphics() on a component, two no-nos for Swing programs. … Read more
You want the drawImage() that scales to the target container. See the article cited here for alternatives. For example, g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
You should use: label1.setHorizontalTextPosition(SwingConstants.LEFT); (Set the position of the text, relative to the icon)
Simply drag the class from the projects tree on to the form in the GUI designer. Just like it says in stackoverflow question 691890.