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2. CEHJ 19,990
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5. MicheleM... 11,450
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1. objects 201,653
2. CEHJ 112,864
3. zzynx 46,385
4. Bart_Cr 28,150
5. mayankea... 25,533
6. ksivananth 22,462
7. sciuriware 21,162
8. Javatm 18,454
9. girionis 15,460
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11. ADSLMark 12,500
12. MicheleM... 11,450
13. dejanpazin 11,210
14. heyhey_ 9,702
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16. contactka... 7,000
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19. conick 6,045
20. mbodewes 6,000
21. vladi21 5,825
22. Webstorm 5,270
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24. tomboshell 4,490
25. jimmack 4,432

11.26.2007 at 07:28AM PST, ID: 22982543

	[x] Attachment Details

ScrollPane Hides JPanel

Asked by LarryAndro in Java AWT & Swing, Java Programming Language

Tags: jpanel, scrollpane

The attached code adds a JPanel to a Container. The JPanel has a lineborder, and can be seen when I invoke the class. However, when I add a ScrollPane, the JPanel disappears, and I'm shown a blank GUI screen.

Please note the lines marked #1, #2 & #3 in the attached code. When I run the code with the ArithmeticLayoutManager layout manager used, #1, the problem occurs. When I run the code with the GridLayout layout manager used, #2, the same problem occurs.

And, when I comment out line #3, so the ScrollPane is not created, the JPanel shows up on the GUI screen fine.

Why is the ScrollPane hiding my JPanel?Start Free Trial

         
           
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             package mugs;
 
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.WindowConstants;
import javax.swing.border.LineBorder;
import nl.marcoslot.lib.gui.layout.alm.ArithmeticLayoutManager;
 
public class Practice extends JFrame {
    
    Container panel = null;
    JPanel pnlMugs = null;
 
    public Practice() {
        init();
    }
    
    public void init() {
        panel = getContentPane();
        panel.setLayout(new ArithmeticLayoutManager()); // #1: Layout #1
        //panel.setLayout(new GridLayout());            // #2: Layout #2
        JScrollPane sp = new JScrollPane(panel);        // #3: Adding scrollpane
                
          pnlMugs = new JPanel();
        pnlMugs.setPreferredSize(new Dimension(570,750));
        LineBorder line = new LineBorder(Color.black, 1, true);
        pnlMugs.setBorder(line);
        pnlMugs.setOpaque(false);
        
        panel.add(pnlMugs,"x=10;y=10");
        
        setSize(700, 850);
        setTitle("Practice");
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
 
    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Practice().setVisible(true);
            }
        });
    }
    
}

           
         

Keywords: ScrollPane Hides JPanel

	Title
1	JFrame with several JPanels
2	Scrollpane question
3	ScrollPane not working
4	everythink A.O.K except scrollpane
5	JList with custom items (JPanel)
6	scrollable jpanel

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20080716-EE-VQP-32 / EE_QW_2_20070628

ScrollPane Hides JPanel

Asked by LarryAndro in Java AWT & Swing, Java Programming Language

Tags: jpanel, scrollpane

About this solution