How to set glasspane in Jpanel?

I want to block all mouse/key input in JPanel, so how to set glasspane in jpanel?

A glass pane is for the entire frame, not just a JPanel.
Read the Swing tutorial on [How to Use Root Panes|http://java.sun.com/docs/books/tutorial/uiswing/TOC.html] which has an example on using Glass Panes.

Similar Messages

How to set an empty JPanel to maximum size?

Hello!
I created class extends JFrame.
I want this maximum size so I set the minimum size as screen size:
setSize(screenWidth,screenHeight);
Now I added an empty JPanel,
and I want it to be the maximum size.
But the problem is - I don't know what is the maximum of the current size without the frame borders. I mean, after set it to maximum size (I don't know how),
I could get the width and height of the current size without the frame borders by:
frame.getContentPane().getSize();
In conclusion, I want to set an empty JPanel to maximum size and get JFrame size without the frame borders.
Thanks!

800512 wrote:
Now I added an empty JPanel,
and I want it to be the maximum size.Define "maximum size". You want it to fill the screen or you want it to be the maximum size inside its container (JFrame in this case)?
You cannot make a component break out of its container, that's for sure. So assuming you want the component to grow to the maximum size inside its container, that should already happen when you add the component to the CENTER position of the JFrame's container. By default it has a BorderLayout.

How to set image to JPanel

Hi to all,
How to set background image to panel in swing?
If anyone knows tell me..

Hi,
Just modify and use this..
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
import RboJComponents.RboJEmailTextField;
import RboJComponents.RboJPanel;
public class ImagePanel extends JPanel
public static final int TILED = 0;
public static final int SCALED = 1;
public static final int ACTUAL = 2;
private BufferedImage image;
private int style;
private float alignmentX = 0.5f;
private float alignmentY = 0.5f;
public ImagePanel(BufferedImage image)
this(image, TILED);
public ImagePanel(BufferedImage image, int style)
this.image = image;
this.style = style;
setLayout( new BorderLayout() );
public void setImageAlignmentX(float alignmentX)
this.alignmentX = alignmentX > 1.0f ? 1.0f : alignmentX < 0.0f ? 0.0f : alignmentX;
public void setImageAlignmentY(float alignmentY)
this.alignmentY = alignmentY > 1.0f ? 1.0f : alignmentY < 0.0f ? 0.0f : alignmentY;
public void add(JComponent component)
add(component, null);
public void add(JComponent component, Object constraints)
component.setOpaque( false );
if (component instanceof JScrollPane)
JScrollPane scrollPane = (JScrollPane)component;
JViewport viewport = scrollPane.getViewport();
viewport.setOpaque( false );
Component c = viewport.getView();
if (c instanceof JComponent)
((JComponent)c).setOpaque( false );
super.add(component, constraints);
protected void paintComponent(Graphics g)
super.paintComponent(g);
if (image == null ) return;
switch (style)
case TILED :
drawTiled(g);
break;
case SCALED :
Dimension d = getSize();
g.drawImage(image, 0, 0, d.width, d.height, null);
break;
case ACTUAL :
drawActual(g);
break;
private void drawTiled(Graphics g)
Dimension d = getSize();
int width = image.getWidth( null );
int height = image.getHeight( null );
for (int x = 0; x < d.width; x += width)
for (int y = 0; y < d.height; y += height)
g.drawImage( image, x, y, null, null );
private void drawActual(Graphics g)
Dimension d = getSize();
float x = (d.width - image.getWidth()) * alignmentX;
float y = (d.height - image.getHeight()) * alignmentY;
g.drawImage(image, (int)x, (int)y, this);
public static void main(String [] args)throws Exception
BufferedImage image = javax.imageio.ImageIO.read(new java.io.File("c:\\final.jpg"));
//ImagePanel north = new ImagePanel(image, ImagePanel.ACTUAL);
//north.setImageAlignmentY(1.0f);
//JTextArea text = new JTextArea(5, 40);
//JScrollPane scrollPane = new JScrollPane( text );
//north.add( scrollPane );
ImagePanel south = new ImagePanel(image, ImagePanel.SCALED);
south.setPreferredSize(new Dimension(490, 340));
south.setLayout(null);
RboJPanel buttons = new RboJPanel();
buttons.setBounds(15, 105, 350, 50);
RboJEmailTextField toAddress = new RboJEmailTextField(28);
//toAddress.setBounds(20,20,20,20);
//toAddress.setCaretColor ( toAddress.getBackground () ) ;
buttons.add(toAddress);
//buttons.add(new JButton("Two"));
/*JPanel boxes = new JPanel();
boxes.add( new JCheckBox("One"));
boxes.add( new JCheckBox("Two") );*/
south.add(buttons);
//south.add(boxes, BorderLayout.PAGE_END);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//frame.getContentPane().add( north, BorderLayout.NORTH );
frame.getContentPane().add( south);
frame.pack();
frame.setVisible(true);
}Regards,
Anees

How to set Width of a JPanel?

I am overwirting paintComponent(Graphics g) method to
draw some g2D in a JPanel.
I want the drawing processing shown on screen (not flashed out after drawn because it is VERY SLOW).
So that I CAN NOT use setsize() or setBound() because to change JPanle.width because this is NOT what I wanted(the graphics is shown AFTER is drawn).
Everytime I call paintComponent(), the width of JPanel is changed.
My question is : How can change JPanel.width without calling method like setsize() or setBound() .
Thanks a lot!!

My code too large, I just show some idea here:
class caller (){
myPanel p;
Graphics2D g2 = (Graphics2D)p.getGraphics();
//I nee to increase the p.width before call my_paint
//I CAN NOT use setsize() or setBound()
//because I want show the drawing process
//on screen( and that is fast)
p.my_paint(g2); // how to set p.width ??
public class myPanel extends JPanel
public void my_paint(Graphics2D g2)
//Do my drawing here ,
// I need to draw thousands of Line2D.
public void paintComponent(Graphics g){
Graphics2D g2 = (Graphics2D)g;
my_paint(g2);

Any one know how to set a picture background in JPanel

I am study java at collage and need to know this for a project
How to set a picture gif or bmp etc to a background in JPanel in Swing
CAN ANYONE HELP!

If you want to just add an image to a JPanel, create a JLabel and add the image to that, then add the JLabel to the JPanel. If you want it to be the background of the JPanel, check this out:
http://manning.com/sbe/files/uts2/Chapter15html/Chapter15.htm
15.2 is where you'll find your answer along with sample code. The whole book is useful, take a look through it if you're interested.

How to set a   background for jFrame?

Hai.i have a code for background image.i.e
* TextOver.java
* Created on June 23, 2008, 1:53 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class TextOver
private static final String IMAGE_PATH =
"http://upload.wikimedia.org/wikipedia/commons/b/b5/HMS_Cardiff_%28D108%29_1.jpg";
private BufferedImage image;
private JTextArea textarea = new JTextArea(20, 40);
private JPanel mainPanel = new JPanel()
@Override
protected void paintComponent(Graphics g)
super.paintComponent(g);
if (image != null)
g.drawImage(image, 0, 0, this);
public TextOver()
URL imageUrl;
try
imageUrl = new URL(IMAGE_PATH);
image = ImageIO.read(imageUrl);
Dimension imageSize = new Dimension(image.getWidth(), image.getHeight());
mainPanel.setPreferredSize(imageSize);
JScrollPane scrollpane = new JScrollPane(textarea);
textarea.setOpaque(false);
scrollpane.setOpaque(false);
scrollpane.getViewport().setOpaque(false);
mainPanel.add(scrollpane);
catch (MalformedURLException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
public JPanel getPanel()
return mainPanel;
private static void createAndShowGUI()
admin_login_code a=new admin_login_code();
a.setVisible(false);
JFrame frame = new JFrame("TextAreaOverImage Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new TextOver().getPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(false);
public static void main(String[] args)
javax.swing.SwingUtilities.invokeLater(new Runnable()
public void run()
createAndShowGUI();
i want to give this backgground to my existing jFrame something like
import java.sql.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class admin_login_code extends javax.swing.JFrame {
String admin_name;
String password;
Connection con;
Statement stmt;
ResultSet rs;
public admin_login_code() {
initComponents();
jPasswordField1.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (!(Character.isDigit(c) ||
(c == KeyEvent.VK_BACK_SPACE) ||
(c == KeyEvent.VK_DELETE))) {
getToolkit().beep();
e.consume();
jFormattedTextField1.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (!(Character.isLetter(c) ||
(c == KeyEvent.VK_BACK_SPACE) ||
(c == KeyEvent.VK_DELETE))) {
getToolkit().beep();
e.consume();
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jPanel1 = new javax.swing.JPanel();
jLabel2 = new javax.swing.JLabel();
jFormattedTextField1 = new javax.swing.JFormattedTextField();
jLabel4 = new javax.swing.JLabel();
jPasswordField1 = new javax.swing.JPasswordField();
jPanel2 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 36));
jLabel1.setForeground(new java.awt.Color(255, 0, 0));
jLabel1.setText("ADMIN LOGIN");
jLabel2.setFont(new java.awt.Font("Tahoma", 1, 24));
jLabel2.setText("Admin Name");
jFormattedTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jFormattedTextField1ActionPerformed(evt);
jLabel4.setFont(new java.awt.Font("Tahoma", 1, 24));
jLabel4.setText("Password");
jPasswordField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jPasswordField1ActionPerformed(evt);
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()
.add(39, 39, 39)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel4)
.add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 161, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(43, 43, 43)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPasswordField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 190, Short.MAX_VALUE)
.add(jFormattedTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 190, Short.MAX_VALUE))
.addContainerGap())
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.add(47, 47, 47)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 34, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jFormattedTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(60, 60, 60)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel4)
.add(jPasswordField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
jButton1.setText("Login");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
jButton3.setText("Exit");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel2Layout.createSequentialGroup()
.add(38, 38, 38)
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 93, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 110, Short.MAX_VALUE)
.add(jButton3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 93, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(55, 55, 55))
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.add(38, 38, 38)
.add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jButton3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 32, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 32, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(30, Short.MAX_VALUE))
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(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(574, 574, 574)
.add(jLabel1))
.add(layout.createSequentialGroup()
.add(459, 459, 459)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(521, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(149, 149, 149)
.add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 66, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(43, 43, 43)
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(42, 42, 42)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(250, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void jPasswordField1ActionPerformed(java.awt.event.ActionEvent evt) {
private void jFormattedTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
Object src=evt.getSource();
if(src==jButton3)
dispose();
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
Object src=evt.getSource();
if(src==jButton1)
admin_name=jFormattedTextField1.getText();
password=jPasswordField1.getText();
try
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcle","scott","root");
stmt=con.createStatement();
rs=stmt.executeQuery("select admin_name,password from admin_registration where admin_name='chandana' and password='8989' ");
while(rs.next())
if(admin_name.equals(rs.getString(1))&&password.equals(rs.getString(2)))
admin_registration a=new admin_registration();
a.setVisible(true);
dispose();
else
JOptionPane.showMessageDialog(null,"Please enter admin name & password ");
catch(ClassNotFoundException e)
e.printStackTrace();
catch(SQLException e)
e.printStackTrace();
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
admin_login_code a=new admin_login_code();
a.setVisible(true);
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton3;
private javax.swing.JFormattedTextField jFormattedTextField1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel4;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPasswordField jPasswordField1;
// End of variables declaration
Can any one can help me how to set a background for jFrame?
Thank you in advance.
Edited by: forums.com on Jul 14, 2008 1:40 AM

90% of the code you posted is not relevant to your question.
If you want further help post a Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the problem.
And don't forget to use code tags when posting code.

How to set the background for all components?

hi
Does anybody know how to set the DEFAULT background color in an application.. I need it because in jdk 1.3 the default bgcolor is grey and in 1.5 it is white.. and I wish white as well.. so to make it also white in jdk 1.3 I need to use the (a bit annoying) anyContainer.setBackground( Color.white ); and these are lots in my app.. So my question is: is there such an overall class with a function (say UIManager.setComponentsBackground( Color color ) ) for such a purpose?
any tip or link would be greatly appreciated

Does anybody know how to set the DEFAULT background color in an applicationthis might get you close
import java.awt.*;
import javax.swing.*;
import java.util.Enumeration;
class ApplicationColor extends JFrame
public ApplicationColor()
    setApplicationColor(Color.RED);
    setLocation(400,300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JPanel jp = new JPanel(new BorderLayout());
    jp.add(new JTextField("I'm a textfield"),BorderLayout.NORTH);
    jp.add(new JComboBox(new String[]{"abc","123"}),BorderLayout.CENTER);
    jp.add(new JButton("I'm a button"),BorderLayout.SOUTH);
    getContentPane().add(jp);
    pack();
public void setApplicationColor(Color color)
    Enumeration enum = UIManager.getDefaults().keys();
    while(enum.hasMoreElements())
      Object key = enum.nextElement();
      Object value = UIManager.get(key);
      if (value instanceof Color)
        if(((String)key).indexOf("background") > -1)
          UIManager.put(key, color);
public static void main(String[] args){new ApplicationColor().setVisible(true);}
}

How to set the extra component to horizontal scrollbar position

How to set the component to position of horizontal scrollbar , that position contain two component horizontal scrollbar and any component (JButton , JLabel ) like that.. Ms-Word scrollbar ,
Like that bellow fig.


{font:'Times New Roman'}{size:12pt}<img src="file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/04/clip_image002.jpg" alt="" width="485" height="27" />{size}{font}
How to design ?

pradeep.rajadurai wrote:
I want set the JTable as a background of jframe or jinternalframe , how it is possible One way that may work, you can always extract the image from a rendered JTable and then paint the same image into the JPanel that holds your components via it's paintComponent method, then added the JPanel to the app's contentPane.
give me simple pgmIs English your second language? Because if so, please understand that this demand can be taken by some as rude.

How to set a Swing component as Modal on a SWT Component?

How to set a Swing component as Modal on a SWT Componen?.I mean, I have a SWt Component window and from that window I am displaying a SWING Component Modal window.
The problem is my swing window is not working as Modal always.
When I opened the swing window from SWT window,swing window is working as Modal.But if Idouble click on Menubar or Title bar of the SWT Window then my Swing window goes back.If I click on any other part of the SWT window.. then once again Swing window is working as modal.
Can any one suggest me to solve this?
I think this is isuue related with Swing over SWT..

pradeep.rajadurai wrote:
I want set the JTable as a background of jframe or jinternalframe , how it is possible One way that may work, you can always extract the image from a rendered JTable and then paint the same image into the JPanel that holds your components via it's paintComponent method, then added the JPanel to the app's contentPane.
give me simple pgmIs English your second language? Because if so, please understand that this demand can be taken by some as rude.

How to set components aligned in left when we use BorderLayout

Hello All,
How to set the components aligned in the left when we use BorderLayout in a panel.Right now,the components are getting aligned in the center.
Any solutions?
Thanks in advance,
Vijay

By default a JPanel uses a FlowLayout when created and by default a FlowLayout uses center alignment. Read the FlowLayout API to find out how to use left alignment.
Also each individual component has an alignmentX and alignmentY value which is set to 0.5 (center aligned). Some LayoutManagers will take this value into consideration. Read the Component API for more information.
Also, check out this section from the Swing tutorial on "Using Layout Managers":
http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html

How to set focus on the last row of JTextPane

how to set focus on the last row of JTextPane?
import javax.swing.*;
import javax.swing.text.html.*;
import java.awt.*;
import java.awt.event.*;
public class MyGUITest extends JPanel implements ActionListener
{   public static void main(String[] args)
    {   SwingUtilities.invokeLater(new Runnable()
         {   public void run()
          {    JFrame f = new JFrame("My GUI");
              MyGUITest GUI = new MyGUITest();
              GUI.setOpaque(true);
              f.setContentPane(GUI);
              f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
              f.pack();
              f.setLocationRelativeTo(null);
              f.setVisible(true);
    JTextPane txtP;
    JButton add;
    HTMLEditorKit hek;
    HTMLDocument hd;
    String txt;
    MyGUITest()
    {     this.setLayout(new BorderLayout());
     this.setPreferredSize(new Dimension(400,200));
     txtP = new JTextPane();
     txtP.setEditable(false);
     txtP.setContentType("text/html");
     txtP.setText("");
     hek = new HTMLEditorKit();
     txtP.setEditorKit(hek);
     hd = new HTMLDocument();
     txtP.setDocument(hd);
     JScrollPane sTxtA = new JScrollPane(txtP);
     add = new JButton("add");
     add.addActionListener(this);
     sTxtA.setBorder(BorderFactory.createTitledBorder(""));
     this.add(sTxtA, BorderLayout.CENTER);
     add(add, BorderLayout.SOUTH);
     new Thread(new Runnable()
     {   public void run()
         {   while(true)
          {   try
              {     Thread.sleep(100);
              }catch(InterruptedException ex)
              {     ex.printStackTrace();
              appendText("This is <b>HTML</b> text");
              //add.doClick();
     }).start();
    public void actionPerformed(ActionEvent e)
    {     txt = "<b>asd</b>";
     try
     {   hek.insertHTML(hd, hd.getLength(), txt, 0, 0, null);
     }catch(Exception ex){   ex.printStackTrace();   }
    public void appendText(String txt)
    {     try
     {   hek.insertHTML(hd, hd.getLength(), txt, 0, 0, null);
     }catch(Exception ex){   ex.printStackTrace();   }
}thanks~

anIdiot wrote:
im not sure what is the caret location...So don't youthink you should have looked for it in the API?
anyway, i want the scroll bar to scrolled down automatically when the output is displayed.
normally, the scroll bar is scrolled down automatically when a new text is inserted, but it doesnt work on this timeGo through camockr's http://tips4java.wordpress.com/2008/10/22/text-area-scrolling/
db

JList: how a set a "name" and "value" for a element

my JList
DefaultListModel listMBuddy;
JList listBuddy;
listMBuddy = new DefaultListModel();
listBuddy = new JList(listMBuddy);
listMBuddy.insertElementAt("buddy name 1", listMBuddy.size());
listMBuddy.insertElementAt("buddy name 2", listMBuddy.size());
listMBuddy.insertElementAt("buddy name 3", listMBuddy.size());a string "buddy name 1" will be show in JList, it is like a name of element.
how i set value for "buddy name 1"? like html
<select>
<option value="5">buddy name 1</option>
<option value="7">buddy name 2</option>
<option value="2">buddy name 3</option>
</select>
thanks

You have to write your own renderer.
example:
public class MyListsRenderer extends JPanel implements ListCellRenderer {
     JTextArea t;
     private LinkedHashMap<Integer, String> departmentsList;
     private LinkedHashMap<Integer, Boolean> checkedList;
     public MyListsRenderer(int tabSize) {
          t = new JTextArea();
          t.setTabSize(tabSize);
     public Component getListCellRendererComponent(JList list, Object value,
               int index, boolean isSelected, boolean cellHasFocus) {
          Integer id = (Integer) value;
          // you need to create class that get an id (value) and return name
          //this is my example:
          String name = Contacts.getInstance().getContacts().get(
                    (Integer) value);
          t.setText(name);//this is the text in the list row
          add(t);
          return this;
}

How to set radio buttons in horizontal state in the JRadioButtonGroup

How to set horizontal alignment in the JRadioButtonGroup

I don't know of any JRadioButtonGroup class.
A ButtonGroup is just a simple data structure that ensures that only one button is selected. It is not a component.
Just add your JRadioButtons to a JPanel with any LayoutManager you wish.

How to set ButtonGroup inactive?

Hello
I have 2 buttongroups in a frame. Within each, a number of JCheckBox appear. Based on the choise in Buttongroup 1, the Buttongroup 2 may or may not be nessecary. But how to set the buttongroup inactive?
Regards
Jens

You have to set the checkboxes inactiveimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test3 extends JFrame {
ButtonGroup bg1 = new ButtonGroup(), bg2 = new ButtonGroup();
JCheckBox[] rightButtons = new JCheckBox[4];
public Test3() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = getContentPane();
    JPanel left = new JPanel(new GridLayout(0,1)), right = new JPanel(new GridLayout(0,1));
    content.add(left, BorderLayout.WEST);
    content.add(right, BorderLayout.EAST);
    for (int i=0; i<5; i++) {
      JCheckBox jb = new JCheckBox((i%2==0?"Enable":"Disable")+"-"+i);
      left.add(jb);
      bg1.add(jb);
      jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
          boolean flag = ((JCheckBox)ae.getSource()).getText().startsWith("Enable");
          for (int i=0; i<rightButtons.length; i++) {
            rightButtons.setEnabled(flag);
for (int i=0; i<rightButtons.length; i++) {
rightButtons[i] = new JCheckBox("Right-"+i);
right.add(rightButtons[i]);
bg2.add(rightButtons[i]);
setSize(300, 300);
public static void main(String[] args) { new Test3().setVisible(true); }

How we set up multiple websites on OSX Server

BACKGROUND
After fiddling and futzing around for weeks (actually since last year) I've finally figured out how to set up multiple websites (virtual sites) using one port and one IP address. While there seems to be lots of discussion on this topic, it seems that the basic assumption is that one knows everything about websites, DNS and all that stuff, which I do not.
When our network was originally established the engineer set up a wiki and also configured webmail, so we had two sites, one secured for mail and the other open for Calendar and the wiki. We were not hosting any websites locally because our school website is hosted by a company in New England.
This year I wanted to set up websites for teachers and students. As great as the wiki is, there are some things it just can't do as well as a website. So I figured if I set up the sites teachers could link back and forth from one to the other. In addition kids could now start to use a real website instead of the cobbled together file mess I had when we ran a Windows network. Also iWeb is a much more accessible tool than FrontPage.
SERVER SIDE:
Snow Leopard Server - 10.6.4
There are two - actually three pieces if you want your iWeb clients to connect to the server: Server Side Web Services, DNS and, in my case, FTP.
================================================ SERVER SIDE - WEB SERVICES
If you haven't turned on Web services, you'll need to open Server Admin and do that. If you don't know how to set up web services - just reply and I'll step you through that as well.
Once web services are set up and turned on, you'll see it listed under your server’s name in the Server Admin sidebar. Click on "Web" and then click on the "Sites" tab at the top of page. This is where you list all your sites.
Click the plus button and enter the fully qualified name of your site, for example: "students.myschool.org". Don't use the defaults here (no name) - that's what got me in trouble before. BE SPECIFIC!
You'll be looking at the "General" tab (the other tabs, "Options", "Realms", etc. we'll deal with in a second).
On the "General Tab", the default IP address ("any") and port (80) is just fine. We'll run everything over port 80. (Apache figures all the virtual site stuff out - you don't need your rocket science degree for that.)
"Web Folder:" is important because this is how you'll "segment" your websites. While I would NEVER do this again, we have a solid state hard drive for the OS and a RAID array for our data files. IF you have that, make sure you do NOT use the default "Web Folder" because it will store all your files on your solid state drive. There may not be enough room, over time, on that drive. I've not experienced it yet, but it's my understanding that if the drive fills up, the server shuts down.
I store my web sites on a folder on the RAID array.
Everything else on that tab can be left as the default. (Just make sure that you have an "index.html" or "index.php" file in your web folder root, but iWeb will take care of that for you.)
I would put in your email address in the "Administrator Email:" field.
Under "Options" you really don't have to put anything. I've tested making websites with iWeb and it doesn't appear that anything needs to be checked.
Nothing needs to be entered in "Realms" as well from what I see working w/ iWeb.
The defaults in "Logging" are fine.
You can leave "Security" alone, but we do have a (self-issued) certificate listed for our webmail site.
"Aliases" is important. Under "Web Server Aliases" you enter how you want the site to respond to when users type in a URL in their web browsers.
When our web server was initially set up the engineer set up "wiki.myschool.org" on port 80 and "mail.myschool.org" on port 443. In the aliases section was nothing but a "*" (the wildcard character). That means, from what I can figure out, that the webserver will respond to these sites regardless of what is typed in the URL. (Well, something like that - point is, if you create OTHER websites, you'll NEVER get to them because the wildcard character in the "Aliases" section, in effect, grabs those web requests and redirects them to the sites that are already there.
In my case I deleted both of those wild card characters. For my "wiki.myschool.org" site, I entered "mail.myschool.org". That means if you type EITHER "wiki." or "mail.", go to the site that’s stored in the “Web Folder” we set up when those sites were created.
For "mail.myschool.org" I just DELETED the wildcard character. I wanted that site (since it was secured) only to respond to "mail." - nothing else. (You're not going to that secured site for any other reason than to get your mail.)
"Proxy" can be left blank. Have no idea what that does. As time permits I'll do some research and figure out what it's used for.
"Web Services" is if you want to provide any MORE services to this particular site. Most likely you'll want to uncheck all the boxes. For our "wiki." site, we have checked "Wikis", "Blogs", and "Calendar". For our "mail." site we have those checked PLUS "Mail".
I would create a separate "Web Folder" for each of your sites. I don't know if that's a requirement but for housekeeping purposes, I would keep the sites separated. And I SUSPECT that it's "best practice" to separate your wiki from your other websites.
SERVER SIDE - DNS
OK...now you have to make your site reachable and the only way to do that is to set up DNS so that folks don't need to type in the IP address of your web server. You need to set up DNS inside your network and, if you want folks in the outside world to reach your website, you'll need to set up an external DNS as well. I'm going to cover INTERNAL DNS - if you don't know how to set up EXTERNAL DNS - reply or email me and I'll post those instructions.
Most likely you have already created Zones for you network...all you really need to do is create "Aliases" so that when you type "students.myschool.org" your web browser will know that site resides on IP address XXX.XXX.XXX.XXX.
If you've set up Zones then you already have a "Machine" setting that translates your server’s name to an IP address and vice versa.
All you need to do is create an "Alias" (CNAME) record for, in this case, "students". You’ll see the choices for types of records when you click the "Add Record" button.
There are only two fields to configure for a record: "Alias Name" - in this case "students" and "Destination" - in this case "servername.myschool.org". (You've already entered a machine record that says "servername" = 192.168.1.x.)
That's it for Internal DNS.
SERVER SIDE - FTP
Now you have to get iWeb to communicate with the webserver.
There are only three ways iWeb will communicate with webservers: MobileMe, Local Folder and FTP Server.
Local Folder is really only practical if you want to host a website on a laptop (I was blown away initially when I found out that all Macs had a built-in web server - how neat is that?). I think there are some very cool things teachers could do with configuration, and, of course, you wouldn't need to set up any web services on the web server, but that's for another discussion. You need to set up FTP services on the web server.
Turn on and enable FTP on your webserver.
You can leave the defaults for "General", "Messages" and "Logging". "Advanced" is the only thing you want to set. I set "Authenticated Users See:" to "Home Folder Only". I set the "FTP Root" to the same root folder in which I plan to store my web sites (/VOLUMES/RAID Array/WebServer/Documents). This setting sets that folder only to be accessible via FTP.
I would suggest returning to your DNS settings and adding one more "Alias". Set "ftp." to point to your webserver. Why? So folks can edit their sites from home (see below).
CAVEAT: If you are running FTP on other servers, make sure that the settings here do not conflict with the settings on the other servers. For example, I'm running FTP on my file server so that my scanners can communicate with it. However, I configure my FTP settings by machine name and NOT "ftp.myschool.org".
================================================
CLIENT SIDE - CONFIGURING iWEB
Now you have to configure iWeb so that it will communicate with your server.
Click on the "Site" icon so that "Site Publishing Settings" appears.
Publishing:
"Publish to:" = "FTP Server"
You can set the "Site name:" and "Contact email:" to whatever you want. But see below!
FTP Server Settings:
"Server address"=ftp.myschool.org (you could also enter in servername.myschool.org or the IP address. However, if you want folks to be able to work on the site from home, you will need to configure external DNS for that. If you use the IP address, you're out of luck for remote access to the site. (You can do it but it's beyond the scope of this discussion.)
"Username" & "Password" should be your user's network login credentials.
"Directory/Path" - this is important. Remember, you set your "FTP Root" to be "/VOLUMES/RAID Array/WebServer/Documents". If you leave this field blank then the website will be dumped into this folder. If you are only setting up one site, that may be OK. However I wanted to set up a "students" site folder, a "faculty" site folder and a separate site for our literary magazine.
THEREFORE: I have, in my ..../Documents folder (on the server), a "students" folder, a "faculty" folder, and a "litmag" folder.
SO...in my "Directory/Path:" field, I have "/faculty". That means the full path to this website is "ftp root/faculty" or "/VOLUMES/RAID Array/WebServer/Documents/faculty" (You don't need a trailing "/" character. iWeb will automatically append the folder for you user depending on what you entered in "Site Name:" in the "Publishing" area.
Website URL:
This is the root website depending on whether it is "students" or "faculty". Since iWeb will append the site name to this root website, I accomplished what I hoped to accomplish in this post (http://discussions.apple.com/message.jspa?messageID=12288561#12288561).
Faculty sites will be @ http://faculty.myschool.org/username. Students @ http://students.myschool.org/username. PERFECT!
iWeb is such a GREAT tool - NOW the kids can start using it!
I want to reiterate that this works for our school but it should work for you as well. There may be better ways to do this but it works for us.
Hope this has been helpful and you won't have to spend weeks trying to figure this all out by yourself!

OK...here's how we did it.
To get access to the website you created from outside your network there are a couple of steps.
First, you have to have a STATIC IP address from your ISP. If you have a T1 circuit, no problem...you usually get a couple of static IPs you can use. However, if you have a cable modem circuit, most likely you have a dynamic IP address which changes when you connect to the internet. Usually a static IP will cost a bit more because the ISP has to go through a couple of steps to set it up for you. But once you have the address, you now have a way for folks outside your network to connect with you.
(I’m also assuming that you use a router of some sort through which traffic flows out to the internet and that you aren’t using connection sharing or something like that.)
The next thing you need to do is have your new static IP address associated with the server on which you are hosting your website. You've probably already done that if your website works inside your network. However, you've associated a private ip (192.168.x.x, etc.) to your web server. That doesn't mean anything to folks on the outside because private IP addresses are just that - private - folks can't access them. (I won't get into VPN because that's a whole other topic.)
The way you associate your new static IP address to your web server is through some sort of dns application from your ISP. For example, we use TierraNet to manage our external DNS information. They have a web interface control panel that is very similar to the DNS interface for XServer. You can create CNAME records (aliases - other ways that folks can access your servers).
Basically you create an "A" (CNAME) record with a fully qualified domain name (e.g. webserver.myschool.org) and point it to your public IP address (XXX.XXX.XXX.XXX) which you just got from your ISP. It's going to take a while (24-48 hours) for this change to take effect. BTW, you can create as many “A” records as you want. For example mail.myschool.com and wiki.myschool.com could point to the same place.
You want to make sure that the fully qualified domain name you enter in the external dns utility matches the name you used when you created your internal dns records on your XServer.
OK...so now folks can get to your domain - but, remember, you have a private network IP scheme between them and you. You now have to tell your router that when web traffic arrives, allow it inside the network and direct it to your web server.
Let's say your public IP address is 205.100.112.50 and your web server is 192.168.0.5.
You have to create, in your router’s "Security Zone" (router companies call them different things) a couple of rules. Usually the first rule is: "Let everything inside the network get out to the web." You've probably already done that if folks inside the network can reach the internet.
You then have to tell the router to allow web traffic (port 80) into your network AND redirect that traffic to 192.168.0.5.
We use AdTran routers and they have a web interface which allows you to write "rules" affecting public and private traffic. Public is folks outside the network, private is folks inside.
AdTran calls them "Security Zones" and you modify those zones with policies.
So my "Policy" would say, in the above example, redirect traffic from my public IP (205.100.112.50) -> to my web server -> (192.168.0.5).
THEN you have to modify this policy with what AdTran calls "Traffic Selectors". You've said, OK, you can get in, but WHAT can get in?
The "Traffic Selector" is written to say: "Permit" "TCP" traffic from 205.100.112.50 only through Port 80. (That's the port that web traffic goes over. If you wanted a secure website, you'd add another traffic selector that opens port 443, for example.)
I'll tell you I'm no genius when it comes to this. I called AdTran and had them configure my router for me. I told them what I wanted done, they remoted into the router and configured it. But then I could go to the web interface and see what they did and then added rules later on when I wanted, for example, to get access to the network via Apple Remote Desktop or VPN into the network on my iPad.
I'd bet that your router has a maintenance agreement that includes this service and if it doesn't it should have.
I did find that I still had issues when I tried to set this up originally and it had to do with the ORDER of the policies. I can’t remember exactly what the issue was, but, effectively one of the policies highjacked traffic before the policy that I wanted got triggered. Simply moving them around in the list fixed that issue. So if you have this set up but still can’t access the site, check the order of your rules.
I don’t know if that helps or not, but I try to think about this stuff conceptually and then get someone to help me with the details. I work with this stuff so infrequently that I forgot how I did something 6 months or a year ago. I’m in the process of creating a wiki for the school which documents all this stuff, but that’s a major undertaking.
Cheers,
John

How to set glasspane in Jpanel?

Similar Messages

Maybe you are looking for