Can I add a JPanel in JScrollPane?

Can I add a JPanel in JScrollPane?
If I added,components in the JPanel can effect the JScrollPane?
thanks!

Can I add a JPanel in JScrollPane?yes you can - it is meant for this.
If I added,components in the JPanel can effect the
JScrollPane?if you mean affect like focusing and scrolling to a certain place - the answer is yes, you have to look the right functions in each component you insert to the panel.

Similar Messages

Is it possible to add a JPanel to JScrollPane

i created a JPanel .
I gave the layout for this panel to be NULL .
Then i added 16 JLabels in that JPanel(using setbounds)
when i try to add it to the container i was not able to see last two labels
So i tried to create a JscrollPane and i add that JPanel to this JScrollPane
I cant see any difference and the JScrollPane was not working
The code is:
JScrollPane scrollPane = new JScrollPane(p);
getContentPane().setLayout(new BorderLayout());
getContentPane().add(scrollPane,BorderLayout.CENTER);
I dont know
1) Is it correct to add a JPanel to JScrollPane
2)Is it compulsory to use a Layout style while using JScrollPane

i created a JPanel .
I gave the layout for this panel to be NULL .
Then i added 16 JLabels in that JPanel(using
setbounds)
when i try to add it to the container i was not able
to see last two labelswhich container ?
Have you checked that the size of this container is coherent
with the one of your JPanel ?
And even before, can this container let the JPanel take the size needed for the
16 JLabels ?
So i tried to create a JscrollPane and i add that
JPanel to this JScrollPane
I cant see any difference and the JScrollPane was not
working
The code is:
JScrollPane scrollPane = new JScrollPane(p);
getContentPane().setLayout(new BorderLayout());
getContentPane().add(scrollPane,BorderLayout.CENTER);
I dont know
1) Is it correct to add a JPanel to JScrollPaneyes
2)Is it compulsory to use a Layout style while using
JScrollPaneJScrollPane has it own layout.
However the component/container you whish to view with the JScrollPane
can have the Layout you whish.

Can we add same JPanel twice??.. on JFrame and JDialog together!!

Hello Frnds,
my problem is quite weird!! i will try to explain..as much as I can !!
My requirement is I want to show same JPanel in JDialog and JFrame at once..!!
I am adding a
JPanel A ---> JDialog
JPanel A ---> JScrollPanel B
JScrollPane B ---> JFrame.. and making frame and dialog visible together.. but JPanel is visible in dialog only..
if i dont add in JDialog.. then JPanel is visible in frame.. !!.. but why that??
JFrame fr = new JFrame();
JPanel np = new JPanel();      // This JPanel is added Twice
np.setBounds(0, 0, 128, 128);
JScrollPane scroll=new JScrollPane(np);      // Once JPanel added here..
scroll.setPreferredSize(new Dimension(385,385));
fr.add(scroll);
JDialog dlg=new JDialog(fr, "Another Panel", false);
dlg.add(np);                        // Second Time JPanel added here..
dlg.pack();
dlg.setVisible(true);
fr.setVisible(true);

Let's make it very clear : it is NOT possible to add
the same instance of a component to two different
containers.
Is it possible to have frame with component.. but on closing that frame component shifts to another frame.. and vice versa I will add to the above:
it is NOT possible to add the same instance of a component to two different containers... at the same time. Does that clarify it?
Why is it so hard to try it yourself?
Instead of waiting a couple of hours hoping someone answers the question you could have solved your problem in a couple of minutes.

Can't add to JPanel after removeAll() is triggered by another swing compone

Consider the bit of code below. It's a much simplified version of my real app.
In jPanel1 is a single label. In jPanel2 is a single button.
The button in jPanel2 is supposed to wipe clear (with removeAll()) jPanel1 and add a new label in place of the old one. What actually happens is that after the first button press, jPanel1 is indeed cleared by the removeAll() method but the new label can't be added (or rather it can be added but won't show.) I can hard code the removal & addition back and forth all day & it works fine. It's just when I use a swing component like JButton or JComboBox that it doesn't work. Why?? Is this a thread thing? (I know I can just change the text of the label but the real app is much more complicated.)
package my.stuff;
import java.awt.*;
import javax.swing.*;
public class TreeTest3 extends javax.swing.JFrame {
     private String language = "english";
     public TreeTest3() {
          initComponents();
          jPanel1.setLayout(new FlowLayout());
          jPanel1.setVisible(true);
          changeLabel();
     private void changeLabel()
          System.out.println("language = " + language);
          jPanel1.removeAll();
          jPanel1.validate();
          jPanel1.add(new JLabel(language), "Center");
          repaint();
     @SuppressWarnings("unchecked")
        // <editor-fold defaultstate="collapsed" desc="Generated Code">
        private void initComponents() {
                jPanel1 = new javax.swing.JPanel();
                jPanel2 = new javax.swing.JPanel();
                jButton1 = new javax.swing.JButton();
                setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
                jPanel1.setBorder(new javax.swing.border.MatteBorder(null));
                jPanel1.setPreferredSize(new java.awt.Dimension(400, 204));
                javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
                jPanel1.setLayout(jPanel1Layout);
                jPanel1Layout.setHorizontalGroup(
                        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGap(0, 398, Short.MAX_VALUE)
                jPanel1Layout.setVerticalGroup(
                        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGap(0, 133, Short.MAX_VALUE)
                jButton1.setText("switch");
                jButton1.addActionListener(new java.awt.event.ActionListener() {
                        public void actionPerformed(java.awt.event.ActionEvent evt) {
                                jButton1ActionPerformed(evt);
                javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
                jPanel2.setLayout(jPanel2Layout);
                jPanel2Layout.setHorizontalGroup(
                        jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(jPanel2Layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(jButton1)
                                .addContainerGap(308, Short.MAX_VALUE))
                jPanel2Layout.setVerticalGroup(
                        jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(jPanel2Layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(jButton1)
                                .addContainerGap(126, Short.MAX_VALUE))
                javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
                getContentPane().setLayout(layout);
                layout.setHorizontalGroup(
                        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                layout.setVerticalGroup(
                        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                pack();
        }// </editor-fold>
     private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
          if (language.equals("english")) language = "spanish"; else language = "english";
          changeLabel();
     public static void main(String args[]) {
          java.awt.EventQueue.invokeLater(new Runnable() {
               public void run() {
                    new TreeTest3().setVisible(true);
        // Variables declaration - do not modify
        private javax.swing.JButton jButton1;
        private javax.swing.JPanel jPanel1;
        private javax.swing.JPanel jPanel2;
        // End of variables declaration
}

It should be
                private void changeLabel()
          System.out.println("language = " + language);
          jPanel1.removeAll();
          jPanel1.add(new JLabel(language), "Center");
          jPanel1.revalidate();
          jPanel1.repaint();
     }

How can i add more than 500 jPanels in a jScrollPane

Hello to all ,
I am facing a problem related to adding jPanels in jScrollPane. My application needs more than 500 jpanels in the jscrollpane.where in each jPanel 4 jtextboxes, 1 comboboxes, 1 check box is there.when the check box will be clicked then the total row( ie row means the panel containing the 4 jtextboxes, 1 comboboxes, 1 check box ).and when the user will click on move up or move down button then the selected jpanel will move up or down.
The tool(sun java studio enterprise 8.1) is not allowing more Jpanels to add manually. so i have to add the jpanels by writing the code in to a loop. and the problem is that when i am trying to add the code in the code generated by the tool the code written out side the code by me is not integratable into the tool generated code.
If u watch the code here am sending u ll get what am facing the problem. The idea of creating jpanels through loop is ok but when trying to impleent in tool facing difficulties.
A example code am sending here. please tell me how i can add more panels to the scrollpane(it is the tool generated code)
Thanks in advance , plz help me for the above
package looptest;
public class loopframe extends javax.swing.JFrame {
/** Creates new form loopframe */
public loopframe() {
initComponents();
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jPanel1 = new javax.swing.JPanel();
jPanel2 = new javax.swing.JPanel();
jTextField1 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jPanel3 = new javax.swing.JPanel();
jTextField2 = new javax.swing.JTextField();
jComboBox2 = new javax.swing.JComboBox();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setText("jTextField1");
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.add(28, 28, 28)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 109, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(54, 54, 54)
.add(jComboBox1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 156, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(35, Short.MAX_VALUE))
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jComboBox1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(21, Short.MAX_VALUE))
jTextField2.setText("jTextField2");
jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
org.jdesktop.layout.GroupLayout jPanel3Layout = new org.jdesktop.layout.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel3Layout.createSequentialGroup()
.add(20, 20, 20)
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 111, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(33, 33, 33)
.add(jComboBox2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 168, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(40, Short.MAX_VALUE))
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel3Layout.createSequentialGroup()
.add(21, 21, 21)
.add(jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jComboBox2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(21, Short.MAX_VALUE))
org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jPanel3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(58, Short.MAX_VALUE))
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.add(21, 21, 21)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(49, 49, 49)
.add(jPanel3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(66, Short.MAX_VALUE))
jScrollPane1.setViewportView(jPanel1);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(31, 31, 31)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 439, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(74, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(30, 30, 30)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 254, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(55, Short.MAX_VALUE))
pack();
}// </editor-fold>
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new loopframe().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JComboBox jComboBox1;
private javax.swing.JComboBox jComboBox2;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
and
package looptest;
public class Main {
public Main() {
public static void main(String[] args) {
new loopframe().setVisible(true);
}

Thanks for here kind attention to solve my problem.
I am thinking to create the classes separately for the components (i.e the jpanel, combobox,textbox etc)and call their instaces from the for loop .But the problem is the jpanel will contain the other components and that jpanels (unlimited jpanels will be added later)will be later added to the jscrollpane.
By writing code, the problem is to place components( the comboboxes,textboxes etc placed on the jpanel ) in appropriate coordinates . So i am doing it through tool .
I am sending here the sample code related to my actual need . In this i have taken a jScrollPane, on that i have added jPanel1 and on jPanel1 i have added jPanel2.On jPanel2 jTextField1, jComboBox1,jCheckBox are added. If the u ll see the code u can understand what problem i am facing.
If i am still not clearly explained ,please ask me. plz help me if u can as u have already handled a problem similar to this.
package addpanels;
public class Main {
/** Creates a new instance of Main */
    public Main() {
    public static void main(String[] args) {
        new addpanels().setVisible(true);
} and
package addpanels;
public class addpanels extends javax.swing.JFrame {
    /** Creates new form addpanels */
    public addpanels() {
        initComponents();
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        jTextField1 = new javax.swing.JTextField();
        jComboBox1 = new javax.swing.JComboBox();
        jCheckBox1 = new javax.swing.JCheckBox();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jTextField1.setText("jTextField1");
        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
        jCheckBox1.setText("jCheckBox1");
        jCheckBox1.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0, 0));
        jCheckBox1.setMargin(new java.awt.Insets(0, 0, 0, 0));
        org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 131, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jComboBox1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 144, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jCheckBox1)
                .addContainerGap(39, Short.MAX_VALUE))
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(17, Short.MAX_VALUE)
                .add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jComboBox1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jCheckBox1))
                .addContainerGap())
        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(34, Short.MAX_VALUE))
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .add(26, 26, 26)
                .add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(152, Short.MAX_VALUE))
        jScrollPane1.setViewportView(jPanel1);
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                .addContainerGap(36, Short.MAX_VALUE)
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 449, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(18, 18, 18))
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(32, 32, 32)
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 230, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(38, Short.MAX_VALUE))
        pack();
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new addpanels().setVisible(true);
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JCheckBox jCheckBox1;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration//GEN-END:variables
}

Can i add JPanel to Jasper Report

I have a panel on which I have drawn some graphics and now I want this panel to be added on report, is this possible?
Can we add Jpanel to Jasper report, if anybody has any thoughts and ideas please share with me?
Thanks & regards,
- Prashant

Don't know exactly what you mean but this is how I add a JPanel to a JScrollPane.
public class Scroll extends JFrame{
JScrollPane jsp;
JPanel panel;
public Scroll(){
jsp = new JScrollPane();
panel = new JPanel();
jsp.getViewPort().add(panel);
getContentPane().add(jsp, BorderLayout.CENTER)
}

Simple question I think, add JPanel to JScrollPane

I would imagine that for anyone with experience with Java this will be a simple problem. Why can't I add a JPanel to a JScrollPane using myScrollPane.Add(myPanel); ?? it seems to get hidden...
This works correctly:
     //Create a panel
     JPanel panel = new JPanel(new FlowLayout());
     //Make it pink
     panel.setBackground(Color.pink);
     //Make it 400,400
     panel.setPreferredSize(new Dimension(400,400));
     //Create a Scrollpane
     JScrollPane scrollPane = new JScrollPane(panel);
     //Make it 300,300
     scrollPane.setPreferredSize(new Dimension(300,300));
     //Create a JFrame
     JFrame frame = new JFrame("Test Scrollpane");
     frame.setLayout(new FlowLayout());
     //Set close operation
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     //Set its size
     frame.setSize(600,600);
     //Add Scrollpane to JFrame
     frame.add(scrollPane);
     //Show it
     frame.setVisible(true);
This doesnt:
     //Create a panel
     JPanel panel = new JPanel(new FlowLayout());
     //Make it pink
     panel.setBackground(Color.pink);
     //Make it 400,400
     panel.setPreferredSize(new Dimension(400,400));
     //Create a Scrollpane
     JScrollPane scrollPane = new JScrollPane();
     scrollPane.add(panel);
     //Make it 300,300
     scrollPane.setPreferredSize(new Dimension(300,300));
     //Create a JFrame
     JFrame frame = new JFrame("Test Scrollpane");
     frame.setLayout(new FlowLayout());
     //Set close operation
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     //Set its size
     frame.setSize(600,600);
     //Add Scrollpane to JFrame
     frame.add(scrollPane);
     //Show it
     frame.setVisible(true);

rcfearn wrote:
I would appreciate it you could read the sample code, I am asking the question as to why I have to do this? For structural reasons I don't want to have to add the JPanel during instatiation of the JScrollPane...Please read the [jscrollpane api.|http://java.sun.com/javase/6/docs/api/javax/swing/JScrollPane.html] To display something in a scroll pane you need to add it not to the scroll pane but to its viewport. If you add the component in the scroll pane's constructor, then it will be automatically added to the viewport. if you don't and add the component later, then you must go out of your way to be sure that it is added to the viewport with:
JScrollPane myScrollPane = new JScrollPane();
myScrollPane.getViewport().add(myComponent);

Problem with JPanel inside JScrollPane

I want to make a simple graphic editor (like MS-Paint) with Java.
I create the frame using JFrame, and use many Swing component. But I found
some difficult when I tried to create the drawing area (the area where user
performs drawing). I use JPanel as drawing area and I put it in JScrollPane.
I use JScrollPane in case if user want to create a big drawing area.
What I want to do with drawing area is, to put it in JScrollPane with size smaller than JScrollPane but I can't get it because the size of drawing area (JPanel) is always be the same as JScrollPane size. In MS-Paint you can see that the canvas (drawing area) size is able to be resize. And the canvas default color is white, and the Scroll Box around it has darkgray color. How can I make it like that (MS-Paint)? Please help. Thanks...
Irfin

I haven't actually tested this, but I think it should work...
Add a JPanel to the scrollpane setting it's background to grey (i think the dark grey in MSPaint is something easy like 128,128,128). Set the layout on that panel to null, then add a second panel to that panel, at freeze it's size (ie. setMaximumSize). Doing it this way will allow you to set like a (10,10) position or something like that, giving the second panel a position away from the edge of the scrollpane.
Seeing as you will be using mouse listeners anyways, you might even be able to allow for the second panel to be resized by checking the mouse position to see if the mouse is over the edge of the panel. I won't go into detail, that'll ruin the fun for you.
Good luck, hope this helps.
Grant.

How can i add the check box beside the directory?

how can i add the check box beside the directory? anybody can help?
tis r the panel of my program :
// FileTreePanel.java
// JPanel for displaying file system contents in a JTree
// using a custom TreeModel.
package com.deitel.advjhtp1.mvc.tree.filesystem;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
import com.deitel.advjhtp1.mvc.tree.filesystem.FileSystemModel;
public class FileTreePanel extends JPanel {
private JTree fileTree;
private FileSystemModel fileSystemModel;
private JTextArea fileDetailsTextArea;
public FileTreePanel( String directory )
fileDetailsTextArea = new JTextArea();
fileDetailsTextArea.setEditable( false );
fileSystemModel = new FileSystemModel(
new File( directory ) );
fileTree = new JTree( fileSystemModel );
fileTree.setEditable( true );
fileTree.addTreeSelectionListener(
new TreeSelectionListener() {
public void valueChanged(
TreeSelectionEvent event )
File file = ( File )
fileTree.getLastSelectedPathComponent();
fileDetailsTextArea.setText(
getFileDetails( file ) );
JSplitPane splitPane = new JSplitPane(
JSplitPane.HORIZONTAL_SPLIT, true,
new JScrollPane( fileTree ),
new JScrollPane( fileDetailsTextArea ) );
setLayout( new BorderLayout() );
add( splitPane, BorderLayout.NORTH );
JCheckBox check = new JCheckBox("Check me");
add( check, BorderLayout.SOUTH );
public Dimension getPreferredSize()
return new Dimension( 400, 200 );
private String getFileDetails( File file )
if ( file == null )
return "";
StringBuffer buffer = new StringBuffer();
buffer.append( "Name: " + file.getName() + "\n" );
buffer.append( "Path: " + file.getPath() + "\n" );
buffer.append( "Size: " + file.length() + "\n" );
return buffer.toString();
public static void main( String args[] )
if ( args.length != 1 )
System.err.println(
"Usage: java FileTreeFrame <path>" );
else {
JFrame frame = new JFrame( "JTree FileSystem Viewer" );
FileTreePanel treePanel = new FileTreePanel( args[ 0 ] );
frame.getContentPane().add( treePanel );
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame.pack();
frame.setVisible( true );
}

You can maybe explore button and forms feature in InDesign. It was added in CS6.

Can I Add a memo in the E61i calendar that repeats...

Can I Add a memo in the E61i calendar that repeats weekly?

Try this it worked, I not sure if this is what you want. a few ke things worth noticing, setPreferred size on the JPanel. That might be the reason it was not showing up, anyway here it is.
import javax.swing.*;
import java.awt.*;
import java.util.Vector;
public class temp extends JFrame{
     public temp(){
          super("Scroll Test");
          Vector myVector = new Vector();
          JPanel contentPane = new JPanel(new BorderLayout());
          for(int j = 0; j < 40; j++)
               myVector.add(new String(j + ""));
          JList theList = new JList(myVector);
          JScrollPane sp = new JScrollPane(theList);
          JPanel p = new JPanel(new BorderLayout());
          p.setPreferredSize(new Dimension(100, 100));
          JMenuBar menuBar = new JMenuBar();
          JMenu menu = new JMenu("Scroll");
          p.add(sp, BorderLayout.CENTER);
          menu.add(p);
          menuBar.add(menu);
          this.setJMenuBar(menuBar);
          this.setContentPane(contentPane);
          this.setSize(300, 300);
     public static void main(String [] args){
          JFrame j = new temp();
          j.show();
Good luct write back and tell me if this is what you were looking for!
Late jason

Can not add a picture to the JFrame from an ActionListener class

As topic says, I can not add a picture to the JFrame from an ActionListener class which is a class inside the JFrame class.
I have a Map.java class where I load an image with ImageIcon chosen with JFileChooser.
I my window class (main class), I have following:
class OpenImage_Listener implements ActionListener
     public void actionPerformed(ActionEvent e)
          int ans = open.showOpenDialog(MainProgram.this);     // "open" is the JFileChooser reference
          if(ans == open.APPROVE_OPTION)
               File file = open.getSelectedFile();
               MainProgram.this.add(new Map(file.getName()), BorderLayout.CENTER);     // this line does not work - it does not add the choosen picture on the window,
                        //but if I add the picture outside this listener class and inside the MainProgram constructor, the picture apperas, but then I cannot use the JFileChooser.
                        showMessageDialog(MainProgram.this, fil.getName() ,"It works", INFORMATION_MESSAGE); // this popup works, and thereby the ActionListener also works.
}So why can�t I add a picture to the window from the above listener class?

The SSCCE:
Ok, I think I solved it with the picture, but now I cannot add new components after adding the picture.
Look at the comment in the actionlistener class:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class Test extends JFrame{
     JButton b = new JButton("Open");
     JFileChooser jfc = new JFileChooser(System.getProperty("user.dir"));
     Picture pane;
     Test(){
          super("Main Program");
          setLayout(new BorderLayout());
          JPanel north = new JPanel();
          add(north, BorderLayout.NORTH);
          north.add(b);
          b.addActionListener(new Listener());
          setVisible(true);
          setSize(500,500);
          pane = new Picture("");
          add(pane, BorderLayout.CENTER);
     class Listener implements ActionListener {
          public void actionPerformed(ActionEvent e){
               int ans = jfc.showOpenDialog(Test.this);
               if(ans == jfc.APPROVE_OPTION)
                    File file = jfc.getSelectedFile();
                    Test.this.add(new Picture(file.getName()), BorderLayout.CENTER);
                    pane.add(new JButton("NEW BUTTON")); // Why does this button not appear on the window???
                    pane.repaint();
                    pane.revalidate();
     public static void main(String[] args)
          Test t = new Test();
class Picture extends JPanel
     Image pic;
     String filename;
     Picture(String filename)
          setLayout(null);
          this.filename = filename;
          pic = Toolkit.getDefaultToolkit().getImage(filename);
        protected void paintComponent(Graphics g)
            super.paintComponent(g);
            g.drawImage(pic,0,0,getWidth(),getHeight(),this);
            revalidate();
}

How do I add multiple JPanels to a JFrame?

I've been trying to do my own little side project to just make something for me and my friends. However, I can't get multiple JPanels to display in one JFrame. If I add more than one JPanel, nothing shows up in the frame. I've tried with SpringLayout, FlowLayout, GridBagLayout, and whatever the default layout for JFrames is. Here is the code that's important:
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.*;
public class CharSheetMain {
      * @param args
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          CharSheetFrame frame=new CharSheetFrame();
          abilityPanel aPanel=new abilityPanel();
          descripPanel dPanel=new descripPanel();
          frame.setLayout(new FlowLayout());
          abilityScore st=new abilityScore();
          abilityScore de=new abilityScore();
          abilityScore co=new abilityScore();
          abilityScore in=new abilityScore();
          abilityScore wi=new abilityScore();
          abilityScore ch=new abilityScore();
          frame.add(aPanel);
          frame.add(dPanel);
          frame.validate();
          frame.repaint();
          frame.pack();
          frame.setVisible(true);
}aPanel and dPanel both extend JPanel. frame extends JFrame. I can get either aPanel or dPanel to show up, but not both at the same time. Can someone tell me what I'm doing wrong?

In the future, Swing related questions should be posted in the Swing forum.
You need to read up on [How to Use Layout Managers|http://download.oracle.com/javase/tutorial/uiswing/layout/index.html]. The tutorial has working example of how to use each layout manager.
By default the content pane of the frame uses a BorderLayout.
For more help create a [SSCCE (Short, Self Contained, Compilable and Executable, Example Program)|http://sscce.org], that demonstrates the incorrect behaviour.
The code you posted in NOT a SSCCE, since we don't have access to any of your custom classes. To do simple tests of adding a panel to frame then just create a panel, give it a preferred size and give each panel a different background color so you can see how it works with your choosen layout manager.

Can I add multiple swing elements on a single line.

Im adding a number of labels to the JPanel -- is there a way to add them all on one line as opposed to:
c.add(top1);
c.add(top2); etc. etc.?

Im adding a number of labels to the JPanel -- is
there a way to add them all on one line as opposed
to:
c.add(top1);
c.add(top2); etc. etc.?well you can do
c.add(top1); c.add(top2);
but basically no, you can't add them all together at the same time

How can I add a JButton in a JList

Hello every one,
Please, if some one knows how to put a JButton or JLabel in a JList let me know.
Thank you in advance

Thanks Noah,
But how can I use this class Cellrenderer?
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.util.*;
import javax.swing.event.*;
public class try001 extends JFrame{
     JSplitPane pane= null;
     JScrollPane left = null;
     JScrollPane right = null;
     JTree tree = null;
     JList list = null;
     JButton button = null;
     DefaultListModel myListModel = null;
     public try001(){
          tree = new JTree();
          list = new JList();
          list.setCellRenderer(new MyCellRenderer());
          //for(int i=0;i<items.length;i++)
          //     list.add(items);
          left = new JScrollPane(tree);
          right = new JScrollPane(list);
          tree.addTreeSelectionListener(treeListener);
          pane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, left, right);
          pane.setDividerLocation(0.5);
          pane.setOneTouchExpandable(true);
          pane.setContinuousLayout(true);
          getContentPane().add(pane, BorderLayout.CENTER);
          setSize(500,300);
          setVisible(true);
     transient TreeSelectionListener treeListener=new TreeSelectionListener() {
          public void valueChanged(TreeSelectionEvent e) {
               //buttons.addElement("lucky");
               //addElement(button);
          } // valueChanged
     }; // treeListener
public static void main(String args[]){
          new try001();

Can we add JComponents as nodes to JTree

Hi:
can we add some components to JTree. Say for example Can I show buttons as JTree Nodes?

You can add anything to a tree or list component. You have to provide your own TreeCellRenderer (extend DefaultTreeCellRenderer and look up some examples on the web), or ListCellRenderer. To allow inline editing of data, you provide a DefaultTreeCellEditor derived implementation. Set these on the tree, and each will handle the rendering and/or editing of nodes. As far as I know, you would only have one renderer, but you can chain them if in your constructor you provide a parameter of TreeCellRenderer, OR you can call upon super.xxx() to use the super class your class extends. Ideally one renderer and one editor is all you need. You just have to write code in the getCellRenderer() and getCellEditor() methods (forget if that is their name off the top of my head..but look att TreeCellRenderer interface and TreeCellEditor interface for the method you must implement).
When you provide a cell editor, you can actually return a JPanel component, and put all kinds of components in that panel. Set the tree row height size to 0, and when a node goes into edit mode, it calls upon your cell editor to make sure it can be edited (and the tree setEditable(true) must have been called), and you can actually "grow" the node inline to whatever size for the editor. Once editing is done, it goes back to the renderer to draw the node again, so that you may show a normal sized node.

Can I add a JPanel in JScrollPane?

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