Problème avec une sous-classe de JPanel

Bonjour,

J'ai aucune solutions de trouver donc si vous vous en avez une je vous en remercie d'avance

J'ai une appli qui soit lance un Panel vierge soit avec une image en Buffer avec l'image j'ai aucun soucis graphique mais sans donc vierge des bugues graphique

J'ai tester tout un tas de truc mais rien y fait toujours ces bugues pourtant je pense bien construire mon panel avant de rajouter les composants

Problème résolut en rajoutant ce qui est en gras coloré

Voici la classe JPanel

Code:

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public class BackgroundImage extends JPanel {
  BufferedImage image;

  public BackgroundImage(BufferedImage image) {
      this.image = image;
  }

  public BackgroundImage() { 
        super();  
  }
  
  @Override
  protected void paintComponent(Graphics g) {
    if(Objects.nonNull(image)){
        int x = (getWidth() - image.getWidth()) / 2;
        int y = (getHeight() - image.getHeight()) / 2;
        g.drawImage(image, x, y, this);
    }else{
        super.paintComponent(g);
    }
  }
}

Voici la class Frame

Code:

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public class NewJFrame extends javax.swing.JFrame {
 
    // Variables declaration - do not modify                     
    javax.swing.JScrollPane jScrollPane1;
    javax.swing.JTextArea jTextArea1;
    BackgroundImage jPanel;
    // End of variables declaration            
 
    public NewJFrame() {
        initComponents();
    }
 
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
 
        File f = new File("images/test.png");
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);
 
        if (f.exists() && f.canRead()) {             
            BufferedImage image = ImageIO.read(new File("images/test.png"));
            jPanel = new BackgroundImage(image);
        }else{
            jPanel = new BackgroundImage();
        }
 
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel);
        jPanel.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(51, 51, 51)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 450, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(334, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addContainerGap(292, Short.MAX_VALUE)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 244, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(40, 40, 40))
        );
 
        getContentPane().add(jPanel);       
        pack();
        setLocationRelativeTo(null);
 
    }// </editor-fold>                        
 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see <a href="http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html" target="_blank">http://download.oracle.com/javase/tu...feel/plaf.html</a> 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }
 
}