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Can someone please explain me what’s the difference between Swing and AWT? Are there any cases where AWT is more useful/advised to use than swing or vice-versa? 9 Answers 9
Your gif is disposal = 3 that means it needs previous image as it renders incrementally. The problem is the image is with black background and not white … Here are the disposals possible: if (disposal==0) s=”no animation”; else if (disposal==1) s=”leave image as is”; else if (disposal==2) s=”clear with background”; else if (disposal==3) s=”restore … Read more
Getting a HeadlessException: No X11 DISPLAY variable was set
You should actually take the result from the option pane: dialogButton = JOptionPane.showConfirmDialog (null, “Are you sure?”,”WARNING”, dialogButton); Otherwise, it remains set to JOptionPane.YES_NO_OPTION. Cleaner would be: if (JOptionPane.showConfirmDialog(null, “Are you sure?”, “WARNING”, JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) { // yes option } else { // no option } Although, I’m not sure what this line is … Read more
JPanel doesn’t have ActionListener capabilities. Instead, you need to use a MouseListener import java.awt.Color; import java.awt.Container; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.GridLayout; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JPanel; public class CoordBoutons extends JFrame { CoordBoutons() { super(“GridLayout”); setDefaultCloseOperation(EXIT_ON_CLOSE); Container contenant = getContentPane(); contenant.setLayout(new GridLayout(8, 8)); for (int i = 0; i < 8; i++) { for (int … Read more
You have added the JPanel over the JFrame which completely blocks out the underlying container on which you have set the color. You could do this instead: public Gui(String title) { super(title); JPanel pane = new JPanel(); setBounds(100, 100, 500, 500); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container con = this.getContentPane(); pane.setBackground(new Color(0, 0, 0)); con.add(pane); setVisible(true); }
