JComboBox and focus

I have 7 JComboBoxes on a JPanel on a JFrame.
How can I dictate in the code which JComboBox has focus? Other languages I've have setFocus methods.
Thanks,

call requestFocus on the desired combo

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JOptionPane and Focus

Hello All,
I've got a small problem with setting the focus in a JOptionPane. My JOptionPane consists of one JComboBox and two JTextFields. I've created this JOptionPane by putting the components in an array and passing it to the JOptionPane constructor. Initially it starts with the focus on the top most component (the JComboBox). What i would like is to have it focussed on one of the JTextFields.
Does anyone have any idea how to do this?
Thanks in advance.

Don't use a JOptionPane, why not use a modal JDialog? That way it is much easier to organise the components and arrange focus

Setting the border when JCombobox get focused

Hello,
Is it possible to set the border when the JCombobox get focused?
In fact, I would like to hide the border at all, but remain the "setFocusable(true)"
Thanks in advance.

So why did you post your last three questions in the Swing forum, but then decide to post this "Swing related" question in the Java Programming forum?
Is it possible to set the border when the JCombobox get focused?Try it!
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.
Don't forget to use the Code Formatting Tags so the posted code retains its original formatting. That is done by selecting the code and then clicking on the "Code" button above the question input area.

Not Updating the Values in the JComboBox and JTable

Hi Friends
In my program i hava Two JComboBox and One JTable. I Update the ComboBox with different field on A Table. and then Display a list of record in the JTable.
It is Displaying the Values in the Begining But when i try to Select the Next Item in the ComboBox it is not Updating the Records Eeither to JComboBox or JTable.
MY CODE is this
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.DefaultComboBoxModel.*;
import javax.swing.table.*;
import java.sql.*;
import java.util.*;
public class SearchBook extends JDialog implements ActionListener
     private JComboBox comboCategory,comboAuthor;
     private JSplitPane splitpane;
     private JTable table;
     private JToolBar toolBar;
     private JButton btnclose, btncancel;
     private JPanel panel1,panel2,panel3,panel4;
     private JLabel lblCategory,lblAuthor;
     private Container c;
     //DefaultTableModel model;
     Statement st;
     ResultSet rs;
     Vector v = new Vector();
     public SearchBook (Connection con)
          // Property for JDialog
          setTitle("Search Books");
          setLocation(40,110);
          setModal(true);
          setSize(750,450);
          // Creating ToolBar Button
          btnclose = new JButton(new ImageIcon("Images/export.gif"));
          btnclose.addActionListener(this);
          // Creating Tool Bar
          toolBar = new JToolBar();
          toolBar.add(btnclose);
          try
               st=con.createStatement();
               rs =st.executeQuery("SELECT BCat from Books Group By Books.BCat");
               while(rs.next())
                    v.add(rs.getString(1));
          catch(SQLException ex)
               System.out.println("Error");
          panel1= new JPanel();
          panel1.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          c.fill = GridBagConstraints.HORIZONTAL;
          lblCategory = new JLabel("Category:");
          lblCategory.setHorizontalAlignment (JTextField.CENTER);
          c.gridx=2;
          c.gridy=2;
          panel1.add(lblCategory,c);
          comboCategory = new JComboBox(v);
          comboCategory.addActionListener(this);
          c.ipadx=20;
          c.gridx=3;
          c.gridwidth=1;
          c.gridy=2;
          panel1.add(comboCategory,c);
          lblAuthor = new JLabel("Author/Publisher:");
          c.gridwidth=2;
          c.gridx=1;
          c.gridy=4;
          panel1.add(lblAuthor,c);
          lblAuthor.setHorizontalAlignment (JTextField.LEFT);
          comboAuthor = new JComboBox();
          comboAuthor.addActionListener(this);
          c.insets= new Insets(20,0,0,0);
          c.ipadx=20;
          c.gridx=3;
          c.gridy=4;
          panel1.add(comboAuthor,c);
          comboAuthor.setBounds (125, 165, 175, 25);
          table = new JTable();
          JScrollPane scrollpane = new JScrollPane(table);
          //panel2 = new JPanel();
          //panel2.add(scrollpane);
          splitpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,panel1,scrollpane);
          splitpane.setDividerSize(15);
          splitpane.setDividerLocation(190);
          getContentPane().add(toolBar,BorderLayout.NORTH);
          getContentPane().add(splitpane);
     public void actionPerformed(ActionEvent ae)
          Object obj= ae.getSource();
          if(obj==comboCategory)
               String selecteditem = (String)comboCategory.getSelectedItem();
               displayAuthor(selecteditem);
               System.out.println("Selected Item"+selecteditem);
          else if(obj==btnclose)
               setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
          else if(obj==comboAuthor)
               String selecteditem1 = (String)comboAuthor.getSelectedItem();
               displayavailablity(selecteditem1);
               //System.out.println("Selected Item"+selecteditem1);
               System.out.println("Selected Author"+selecteditem1);
     private void displayAuthor(String selecteditem)
          try
          {     Vector data = new Vector();
               rs= st.executeQuery("SELECT BAuthorandPublisher FROM Books where BCat='" + selecteditem + "' Group By Books.BAuthorandPublisher");
               System.out.println("Executing");
               while(rs.next())
                    data.add(rs.getString(1));
               //((DefaultComboBoxModel)comboAuthor.getModel()).setVectorData(data);
               comboAuthor.setModel(new DefaultComboBoxModel(data));
          catch(SQLException ex)
               System.out.println("ERROR");
     private void displayavailablity(String selecteditem1)
               try
                    Vector columnNames = new Vector();
                    Vector data1 = new Vector();
                    rs= st.executeQuery("SELECT * FROM Books where BAuthorandPublisher='" + selecteditem1 +"'");
                    ResultSetMetaData md= rs.getMetaData();
                    int columns =md.getColumnCount();
                    String booktblheading[]={"Book ID","Book NAME","BOOK AUTHOR/PUBLISHER","REFRENCE","CATEGORY"};
                    for(int i=1; i<= booktblheading.length;i++)
                         columnNames.addElement(booktblheading[i-1]);
                    while(rs.next())
                         Vector row = new Vector(columns);
                         for(int i=1;i<=columns;i++)
                              row.addElement(rs.getObject(i));
                         data1.addElement(row);
                         //System.out.println("data is:"+data);
                    ((DefaultTableModel)table.getModel()).setDataVector(data1,columnNames);
                    //DefaultTableModel model = new DefaultTableModel(data1,columnNames);
                    //table.setModel(model);
                    rs.close();
                    st.close();
               catch(SQLException ex)
}Please check my code and give me some Better Solution
Thank you

You already have a posting on this topic:
http://forum.java.sun.com/thread.jspa?threadID=5143235

Using KeyMap in Editable JComboBoxes and JTable

I am using Keymapping for JTextFields. It works fine ! I am interested in extending the keymap feature to JComboBoxes and JTable.

if you want to do the keymapping inside the editable component of the combobox or the table, make sure you apply it on the editor component.e.g. comboBox.getEditor().getEditorComponent() and table.getCellEditor().getTableCellEditorComponent().

Help with JComboBox and Model creation

hi,
I'm trying to figure out the best way to set up the data behind the JComboBox and copy part of that data to be shown by the JComboBox. Here is what I would like it to do.
My data:
itemID, dbaseID, name
1, 2, test1
2, 2, test2
3, 2, test3
The JCombo will only display the name in this case "test1", "test2", or "test3". However when the user selects the name, I want to easily retrieve the hidden itemID or dbaseID. I've got the combobox working with just the "test1" but it doesn't tell me which dbase it is from. I have to search all of them and worry about identical names.
What is the best way to set this up? I was thinking about an multiDimensional model but not sure how that would look. It is just not clicking how set up the data and then add parts of to the combo box.
Any guidance or examples would be appreciated.

From what I can tell both getSelectedItem() and getSelectedValue() return the string value of the GUI component. Read the API, that is not what they return. They return the "selected" Object.
The renderer, by default, displays the toString() value of the Object.
I'm casting the string into Item No you aren't, because that is not possible.
My understanding was casting was just converting one thing to another.Casting does not "convert" anything. Time to get out your Java textbook and read up on casting.
However this looks like it is actually grabbing the memory point to an item.Exactly. The getSelected... methods simply return a reference to the Object that was selected. Thats all any get... method does.

[svn] 3079: Pop up and focus fixes.

Revision: 3079
Author: [email protected]
Date: 2008-09-03 10:53:07 -0700 (Wed, 03 Sep 2008)
Log Message:
Pop up and focus fixes.
QE: YES
Doc:
Checkintests: YES
Reviewer: Alex
Bugs: SDK-16669, SDK-15688
mx/events/SWFBridgeEvent.as
Add marshal() method. Update ASDoc.
mx/managers/FocusManager.as
Fix bug SDK-15688. Type coercion error fixed by moving to a common super class of IFocusManagerComponent and SWFLoader.
mx/managers/PopUpManagerImpl.as
Renaming.
airframework/src/mx/managers/WindowedSystemManager.as
mx/managers/SystemManager.as
Fix problems introduced from API scrub and fix an old problem activating A.2.2.
mx/managers/SystemManagerProxy.as
Override addEventListener() and removeEventListener() to also add listeners on the proxied SystemManager. This
allows the Proxy to get keyboard focus events that happen in the proxied SystemManager. Dispatch activate/deactivate messages to the sandbox root.
Ticket Links:
http://bugs.adobe.com/jira/browse/SDK-16669
http://bugs.adobe.com/jira/browse/SDK-15688
http://bugs.adobe.com/jira/browse/SDK-15688
Modified Paths:
flex/sdk/branches/3.0.x/frameworks/projects/airframework/src/mx/managers/WindowedSystemMa nager.as
flex/sdk/branches/3.0.x/frameworks/projects/framework/src/mx/events/SWFBridgeEvent.as
flex/sdk/branches/3.0.x/frameworks/projects/framework/src/mx/managers/FocusManager.as
flex/sdk/branches/3.0.x/frameworks/projects/framework/src/mx/managers/PopUpManagerImpl.as
flex/sdk/branches/3.0.x/frameworks/projects/framework/src/mx/managers/SystemManager.as
flex/sdk/branches/3.0.x/frameworks/projects/framework/src/mx/managers/SystemManagerProxy. as

I would suggest not to use JWindow but JPopupMenu! In
the JPopupMenu you can add any swing-components!
You can show the Popup in focusGained (ok, that is
not so user-friendly, in my opinion a shortcut would
do better!).
The Popup will hide automatically if you click with
the mouse somewhere else or hit escape.Thank you for the reply.
I'm still having problems. I'd prefer not to use a jpopupmenu, because I want to use that for something else. This was just going to be a simple list that would appear near the text field so user could have a list of options to choose from.
Focus gained on the textfield brings up the list. Selecting something on the list clears it (hides). This idea works well on the mac. But on the pc the jwindow keeps hiding behind the main frame ?
I have the following code
The windows is created as follows
listWindow = new JWindow(SwingUtilities.getWindowAncestor(this));
listWindow.getContentPane().add(pane);
listWindow.setVisible(false);
pane contains the jlist of values
Then the textfield is as follows
textField.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusGained(java.awt.event.FocusEvent evt) {
if (showListWindow) {
if (!listWindow.isVisible()) {
Point los = getLocationOnScreen();
listWindow.setVisible(true);
listWindow.setLocation(los.x +580, los.y +75);
listWindow.pack();
listWindow.toFront();
textField().requestFocus();
I use a boolean showListWindow to decide when to show. Because I noticed that displaying the jlist and requesting focus to the textfield caused the focusGain to fire again.
Any ideas why the pc keeps the list hidden ? If I move the main frame I can see !

AWT and focusing on different windows

Hey guys.
I have a problem, I'm trying to set the focus a window but can't.
I have two windows A and B.
I also have a Events being picked up set on window A.
So the set of events are detailed as follows.
Window A display's and responds to events.
When a particular event occurs it loads up a new window (WindowB) and focus is given to that window.Wasn't a problem until we realised that there was a delay between Window A being displayed and Window B being displayed, enough to cause a problem.
So the code was changed like follows.
WindowB.pack();
WindowB.setVisible(true);
WindowA.setVisible(false);When it was changed to the above, we lost the ability to pick up keyboard events, as WindowA was still the window with focus.
I've had a look at the KeyboardFocusManager where it seems that focus can be change between components.
However is also states for method setGlobalFocusWindow() that it can only be set if it is in the same context.
Which it is not.
Is it possible to set focus to the window before the window has been set visible? Is KeyboardManager the right class to look at?
Sorry about the lack of code(It's spread in many directions and is sensitive)
Thanks for any help in advance

hello,
the following link may help: http://java.sun.com/j2se/1.4.2/docs/api/java/awt/doc-files/FocusSpec.html
wrappingduke

Web browser resets scroll position and focus when page load completes

when a page is loading, the scroll position of the page reverts to the top-left and focus in a form element is lost whenever an element or the whole page finishes loading
Post relates to: Pre p100eww (Sprint)

Possibly related to the OP's question, I wish we could get the composition page to scroll when typing a reply here on the forum (while using my Pre plus).
Quoting a reply fills half the text box, then once I reach the bottom of the box, I can't scroll any further downward to complete my reply...
WyreNut
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My iphone6 camera is rear , and focus dosnt work in it , although my front camera is working great

My iphone6 camera is rear , and focus dosnt work in it , although my front camera is working great

Hey there Aydarezania,
It sounds like you are able to focus using the front camera, but the back one doesnt seem to. I would use these troubleshooting steps from the following article, named:
Get help with the camera on your iPhone, iPad, or iPod touch
Force the app to close, then open the Camera app again.
Restart your device, then open the Camera app again.
Your photos are blurred or out of focus
If your photos are blurred, out of focus, or have dark spots, try these steps:
Make sure that the camera lens is clean. If you need to clean the lens, use a microfiber cloth. If you see dirt or debris inside the lens, take your device to an Apple Retail Store or Authorized Service Provider for more help.
Make sure that there’s nothing blocking the camera lens. If you’re using a case, try removing it.
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens attachment, try taking a picture without it. Then compare the quality.
Adjust the focus by tapping on the person or object in the preview screen. You’ll see the screen pulse or briefly go in and out of focus as the camera adjusts. In photo mode, try to stay steady when adjusting the focus. If you move too far in any direction, the camera will automatically refocus to the center. In video mode, you can adjust the focus before you begin recording.
If the color seems too bright, or you see double-exposures of moving objects, make sure that HDR is set to Auto or Off. Tap HDR at the top of the screen to choose a different setting.
Thank you for using Apple Support Communities.
Cheers,
Sterling

Problem while adding both Key And Focus Listeners to JTextField

Hi!
I have something peculiar while adding Key and Focus Listener to JTextField. Suppose i add just Key Listener then everything's fine and i could keep track of keys being pressed. But as soon as i add a Focus Listener to it with the code to select full text in focusGained() method, it starts reponding wrongly to arrow keys pressed and does not perform desired actions. For let arrow key it moves caret by one for the first time after that it does not resond to that unless caret is changed by using mouse. If right arrow key is pressed the it moves the caret to last position from wherever it is. For UP and DOWN it selects the full text(This should be done when it gets focus)
public void focusGained(FocusEvent fe)
setCaretPosition(0);
moveCaretPosition(getDocument().getLength());
Can someone help me out on this?
thanks and regards,
Amit.

None of those things will cause your JFrame to resize itself. And this is probably a good thing, because your JFrame shouldn't change size once you have created it. Why not create your JPanel so that it has enough space for you to add the component later? Or why not just add the component to start with and then enable it or make it editable when you decide that's necessary?

What's focus-angle and focus-distance in CSS radial-gradients?

Reading the reference ( http://docs.oracle.com/javafx/2.0/api/javafx/scene/doc-files/cssref.html#typepaint ) I found these two values you can set in a radial-gradient definition:
radial-gradient([ *focus-angle* <angle>, ]? [ *focus-distance* <percentage>, ]? [ center <point>, ]? radius [ <length> | <percentage> ] [ [ repeat | reflect ], ]? <color-stop>[, <color-stop>]+)
Could someone enlighten me what they mean? I wrote a little tool for visual definition of Gradients (http://88.198.17.44/blog/2012/04/13/it-works-fxexperience-tools-gradienteditor-plugin/) as an extension to FXExperience Tools, and I'd like to include it if it makes sense.
Thanks
Toni

focus-angle and focus-distance are together used to determine the focal point of the radial pattern.
See this image: http://www.webdesign.org/img_articles/6822/gradient.jpg

Plazmic CDK 4.6 caret and focus button issues

I hope I'm posting in the right thread? This is regarding the Plazmic CDK 4.6 for Blackberry - to create your own themes.
Ok. I think I some what get the hang of Plazmic CDK 4.6 except for a few things.
I use ArcSoft PhotoStudio to make color changes to certain things. However, in the Today style, when I try to change the 'caret' color, which is that selection bar, no matter how much I resize it, it always looks really thick, almost covering the top of the 2nd line (see image below).
Also, when I try to change the focus circle, I open it with PhotoStudio and it changes the circle to this circle with a box around it, so when I try to change the color, it turns out like this (see picture below)
I also have issues with using a transparent background if I upload and make minor changes to an icon (see picture below). So I found this american flag icon, altered the pic to make the colors darker, then it adds this white background instead of keeping it transparent.
Is there a better program I could be using? Or any idea how to make these changes with this program? Or where can I find 'caret' and 'focus' icons so I don't have to worry about changing the colors.
Sorry if I sound confusing, hopefully someone understands what I'm saying?
Thanks!

you can only use Plazmik, sorry.
about transparency, when you use your drawing software and save the images, do you use a format that supports transparency ? There are two : GIF and PNG. All others add an opaque background color.
The search box on top-right of this page is your true friend, and the public Knowledge Base too:

JComboBox.setPopupVisible() and focus

Hello,
the following code demonstrates that always when the combobox is editable and the standard focus sequence is modified, a setPopupVisible(true) indeed opens the popup, but it is immediately closed again. Is anything wrong with the code?
Although there are quite a number of JComboBox bugs in the database, I did not find this one. If it is a bug, of course I would be interested in a workaround.
Regards
J�rg
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Y extends JFrame
private JComboBox cmb;
public Y()
{ setSize(300,300);
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    Container cp= getContentPane();
    cp.setLayout(null);
    final JCheckBox cb= new JCheckBox("Combo editable");
    cb.setBounds(80,30,130,20);
    cb.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
     cmb.setEditable(cb.isSelected());
    final JTextField tf1= new JTextField();
    tf1.setBounds(50,60,60,20);
    tf1.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
     if (!tf1.getText().equals("ee")) {
       cmb.requestFocusInWindow(); // Prevents popup to stay open.
       cmb.setPopupVisible(true);
       System.out.println(cmb.isVisible());
    JTextField tf2= new JTextField();
    tf2.setBounds(150,60,60,20);
    tf2.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
     cmb.setPopupVisible(true);
    cmb = new JComboBox(new String[]{"Item 1", "Item 2", "Item 3", "Item 4"});
    cmb.setBounds(100,90,50,20);
    cmb.setSelectedIndex(-1);
    System.out.println("LightWeight: "+cmb.isLightWeightPopupEnabled());
    cp.add(cb);
    cp.add(tf1);
    cp.add(tf2);
    cp.add(cmb);
    setVisible(true);
    tf1.requestFocusInWindow();
public static void main(String args[])
{ java.awt.EventQueue.invokeLater(new Runnable()
    { public void run()
      { new Y();
}

Well, there's two things I note. The first is you're printing out the comboBox's visible status, which is always true, when you're probably trying to get the comboBox's popup's visible status.
The second thing is the cause of your problem. You request focus on the combo box. When it is editable, however, it is the editor component that gets the focus, not the combo box. So, the popup is made visible and then the editor component loses focus because the combo box gets focus, and so the popup is hidden.
This change does what you want, I think:
    tf1.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
    if (!tf1.getText().equals("ee")) {
        if ( cmb.isEditable() )
            cmb.getEditor().getEditorComponent().requestFocusInWindow();
        else
            cmb.requestFocusInWindow(); // Prevents popup to stay open.
      cmb.setPopupVisible(true);
      System.out.println(cmb.isVisible());
    });

Problem with applet, popup window and focus loss

Hi all !
I've got a problem when my applet lose the focus. Let me explain :
I've got an applet embed in a jsp page. There are several buttons in it that allow the user to open modal windows.
The problem comes when the user gives the focus to another application whithout closing the modal window first.
When he tries to come back to the web page owning the applet (using the task bar), then the modal window stays behind it and blocks any action on the applet.
Does anyone know how to force the modal window to be displayed in front of the applet, even when the user plays with focuses ?
Thank's in advance.

thank you for your help, sils.
I've written that code :
* Cr�� le 31 ao�t 05
package com.scor.apricot.web.rpc.ltnp.applet.listener.ldf;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JDialog;
import javax.swing.JPanel;
public class AppletWindowListener extends WindowAdapter {
     private JPanel panel;
     private JDialog dialogWindow;
     public AppletWindowListener(JPanel panel, JDialog dialogWindow) {
          this.panel = panel;
          this.dialogWindow = dialogWindow;
     public void windowActivated(WindowEvent e) {
          if (dialogWindow!=null && dialogWindow.isShowing())
               dialogWindow.toFront();
}Is that right ?
I don't know how to add the listener, where must I put the addWindowListener method ? It seems that this method cannot be used with a JApplet object.

JComboBox and focus

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