Problem with JComboBox in j2sdk 1.4.2_01

Hi,
I've got a JComboBox, and I want to change its background color. I use this code:
BasicComboBoxEditor editor = (BasicComboBoxEditor)myJComboBox.getEditor();
editor.getEditorComponent().setBackground(SystemColor.control);
This code works with versions 1.3.1 and 1.4.1, but with version 1.4.2_01 it doesn't.
Can anyone tell me another way to change the background color??
Thanx in advance.

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FocusListener problem with JComboBox

Hi,
I am facing a problem with JComboBox. When I make it as Editable it is not Listening to the FocucListener Event....
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Regards,
Chandan Sharma

I searched the forum using "jcombobox focuslistener editable" and quess what, the first posting I read had the solution.
Search the forum before posting questions.

Strange problem with JComboBox

I am having a strange problem with JComboBox, I created a method as a JComboBox factory which returns a JComboBox filled with items. the method works fine and I can see the items in the JComboBox. The problem is when I try using the method myCombo.SelectedItem(String item); the object myCombo does not set the selected item, it just leaves the item blank (or unselected).
//This method build a JComboBox
public javax.swing.JComboBox makeJComboBox(String[] items) {
javax.swing.JComboBox myComboBox = new javax.swing.JComboBox();
for (int index=0;index<items.length;index++){
myComboBox.addItem(makeObj(items[index]));
return myComboBox;
public Object makeObj(final String item) {
return new Object() {
public String toString() {
return item;
}

Couple of better ways to populate a combo with items-
public javax.swing.JComboBox makeJComboBox(String[]items) {
javax.swing.ComboBoxModel cbModel = new DefaultComboBoxModel(items);
javax.swing.JComboBox myComboBox = new javax.swing.JComboBox(cbModel);
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}OR
public javax.swing.JComboBox makeJComboBox(String[]items) {
return new javax.swing.JComboBox(items);

Problem with JComboBox in aTable Cell

I try to put JComboBox in JTableCell,
what i want to do is something like this...
Question | Answer |
1. what is your favourite | a. Pizza |
food? | b. Hot Dog |
2. what is your favourite | a. red |
color? | b. blue |
Object[][] data = {
{"1.What is your favourite food?", new AnswerChoices(new String[]{"a.Pizza","b.Hot Dog"})},
{"2.What is your favourite color?", new AnswerChoices(new String[]{"a.red","b.blue"})}
here my code;
//class AnswerChoicesCellEditor
import javax.swing.table.*;
import javax.swing.*;
import java.awt.Component;
import java.awt.event.MouseEvent;
import java.util.EventObject;
import de.falcom.table.*;
public class AnswerChoicesCellEditor extends AbstractCellEditor implements TableCellEditor{
 protected JComboBox mComboBox;
public AnswerChoicesCellEditor(){
 mComboBox = new JComboBox();
 mComboBox.addActionListener(this);
 mComboBox.setEditable(false);
public Component getTableCellEditorComponent(JTable table,Object value,boolean isSelected,int row,int column){
 if(value instanceof AnswerChoices){
 AnswerChoices a = (AnswerChoices)value;
 String[] c = a.getChoices();
 mComboBox.removeAllItems();
 for(int i=0; i < c.length; i++)
 mComboBox.addItem(c);
 mComboBox.setSelectedIndex(a.getAnswer());
 return mComboBox;
public Object getCellEditorValue(){
 int nchoices = mComboBox.getItemCount();
 String[] c = new String[nchoices];
 for(int i = 0; i<nchoices; i++){
 c[i] = mComboBox.getItemAt(i).toString();
 return new AnswerChoices(c,mComboBox.getSelectedIndex());
 //return mComboBox.getSelectedItem(); //here i get but after selection there is no comboBox in tableCell
//the Renderer class
import javax.swing.table.TableCellRenderer;
import javax.swing.*;
import java.awt.Component;
public class AnswerChoicesCellRenderer extends JComboBox implements TableCellRenderer {
 private Object curValue;
/** Creates new AnswerChoiceCellRenderer */
public AnswerChoicesCellRenderer() {
setEditable(false);
public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column) {
if (value instanceof AnswerChoices) {
AnswerChoices nl = (AnswerChoices)value;
String[] tList = nl.getChoices();
if (tList != null) {
removeAllItems();
for (int i=0; i<tList.length; i++)
addItem(tList[i]);
 setSelectedIndex(AnswerChoices.getAnswer());
 //this.setSelectedItem();
//return this;
//this.getTableCellRendererComponent(table,value,isSelected,hasFocus,row,column);
if (table != null)
if (table.isCellEditable(row, column))
setForeground(CellRendererConstants.EDITABLE_COLOR);
else
setForeground(CellRendererConstants.UNEDITABLE_COLOR);
 setBackground(table.getBackground());
return this;
public class AnswerChoices {
 static int ans = 0;
 String[] choices ;
public AnswerChoices(String[]c,int a){
 choices = c;
 ans = a;
public AnswerChoices(String[] c){
 this(c,0);
public String[] getChoices(){
 return choices;
public void setAnswer(int a){
 ans = a;
public static int getAnswer(){
 return ans;
//the TableModel i used in my app
import java.awt.Color;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;
import javax.swing.*;
public class FAL_Table extends JTable {
/** Creates new FAL_Table */
public FAL_Table(DefaultTableModel dtm) {
super(dtm);
setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
setRowSelectionAllowed(false);
setColumnSelectionAllowed(false);
setBackground(java.awt.Color.white);
setDefaultCellEditorRenderer();
private void setDefaultCellEditorRenderer(Class forClass, TableCellEditor editor, TableCellRenderer renderer) {
 setDefaultEditor(forClass, editor);
 setDefaultRenderer(forClass, renderer);
 private void setDefaultCellEditorRenderer() {
 // Setting default editor&renderer of Boolean
 setDefaultCellEditorRenderer(Boolean.class, new BooleanCellEditor(), new BooleanCellRenderer());
 //Setting default editor&renderer of ComboBox
 setDefaultCellEditorRenderer(JComboBox.class, new ComboBoxCellEditor( ),new ComboBoxRenderer());
 // Number class
 // Setting default editor&renderer of java.math.BigDecimal
 setDefaultCellEditorRenderer(java.math.BigDecimal.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of java.math.BigInteger
 setDefaultCellEditorRenderer(java.math.BigInteger.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of java.lang.Byte
 setDefaultCellEditorRenderer(Byte.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of Double
 setDefaultCellEditorRenderer(Double.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of Float
 setDefaultCellEditorRenderer(Float.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of Integer
 setDefaultCellEditorRenderer(Integer.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of Long
 setDefaultCellEditorRenderer(Long.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of Short
 setDefaultCellEditorRenderer(Short.class,new NumberCellEditor(), new NumberCellRenderer());
 // Setting default editor&renderer of String
 setDefaultCellEditorRenderer(String.class,new StringCellEditor(), new StringCellRenderer());
 // Setting default editor&renderer of FileName
 setDefaultCellEditorRenderer(FileName.class,new FileNameCellEditor(), new FileNameCellRenderer());
 // Setting default editor&renderer of Color
 setDefaultCellEditorRenderer(Color.class,new ColorCellEditor(), new ColorCellRenderer());
 setDefaultCellEditorRenderer(AnswerChoices.class, new AnswerChoicesCellEditor(), new AnswerChoicesCellRenderer());
 setDefaultCellEditorRenderer(JSpinner.class, new SpinnerCellEditor(), new SpinnerRenderer());
public Class getCellClass(int row,int col) {
TableModel model = getModel();
if (model instanceof FAL_TableModel) {
FAL_TableModel ptm = (FAL_TableModel)model;
return ptm.getCellClass(row,convertColumnIndexToModel(col));
return model.getColumnClass(convertColumnIndexToModel(col));
public TableCellRenderer getCellRenderer(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = tableColumn.getCellRenderer();
if (renderer == null) {
renderer = getDefaultRenderer(getCellClass(row,column));
return renderer;
public TableCellEditor getCellEditor(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellEditor editor = tableColumn.getCellEditor();
if (editor == null) {
editor = getDefaultEditor(getCellClass(row,column));
return editor;
import javax.swing.table.*;
import java.util.Vector;
import java.awt.event.MouseEvent;
import java.util.EventObject;
public class FAL_TableModel extends DefaultTableModel implements TableModel {
public FAL_TableModel() {
this((Vector)null, 0);
public FAL_TableModel(int numRows, int numColumns) {
super(numRows,numColumns);
public FAL_TableModel(Vector columnNames, int numRows) {
super(columnNames,numRows);
public FAL_TableModel(Object[] columnNames, int numRows) {
super(convertToVector(columnNames), numRows);
public FAL_TableModel(Vector data, Vector columnNames) {
setDataVector(data, columnNames);
public FAL_TableModel(Object[][] data, Object[] columnNames) {
setDataVector(data, columnNames);
 public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
Object obj = getValueAt(row,col);
if (col != 1){
return false;
 }else{
 return true;
public Class getCellClass(int row,int col) {
Object obj = getValueAt(row,col);
if (obj != null)
 return obj.getClass();
 else
 return Object.class;
public Object getCellValue(int row,int col) {
Object obj = getValueAt(row,col);
 return obj;
my problem is, when i select an item from one of the comboBox in the table the value of the other cells changes too and i have the same problem with JSpinner.
please help i am stuck
Gebi

and when i try to get the current value oa a cell it returns the Component class like this
AnswerChoices@bf1f20 ...

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OK I know that subject doesn't make much sense, but this is rather hard to explain.
Has anyone else had any issues with the the Java2 1.4 SDK's jre (The software dev kit along with the jre) and just the 1.4 jre installation files? Basically it's this:
j2re-1_4_0-win.exe - JRE ONLY
j2sdk-1_4_0-win.exe - SDK + JRE
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Installing the jre with j2sdk-1_4_0-win.exe will make the applet work, but just installing the jre itself (j2re-1_4_0-win.exe - the one your web browser will make you d/l if you don't have jre 1.4) will make the applet unworkable.
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Obviously this is very puzzling and was wondering if anyone else has had something like this happen to them, and if not maybe Sun should look into this since this has really made my applet pointless (what's the point of using an applet if you have to d/l a 30+ meg file in order to run it vs the 9 meg file that won't run it :) ).
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thanks a lot..

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import java.awt.event.*;
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Ciao,
Vipul

WAS 6.40 Java Edition - problems with j2sdk-1_4_2_10

Just for info!
Several installations without success
VMWare 5.0.0
Windows 2003 SP1
j2sdk-1_4_2_10
2GB RAM
Steps 18 or 22 errrors.
Put j2sdk-1_4_2_08 - OK
cheers!

Pl. check OSS Note 716604. SAP recommends using 1.4.2_09 SDK.
Extract from the Note:
Quote:
Access to appropriate Sun J2SE Version:
Please use Sun J2SE 1.4.2_09 SDK (or higher 1.4.2 versions after they will become available). It is not recommended to use versions lower than 1.4.2_09. Please also do not use J2SE 5.0
Important note:
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Unquote:
I have used 1.4.2_09 and have no problems with the installation.
Regards
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P.S : Pl. reward points if it is helpful to you.

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Hi,
i have a problem handling VARCHAR-Columns via JDBC.
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Configuration details:
JDBC-Driver:
package com.sap.dbtech.jdbc, MaxDB JDBC Driver, MySQL MaxDB, 7.5.1 Build 000-000-002-750 on Java 1.4.2
Database-version:
7.5.00.16 on WindowsXP Pro SP1
JRE:
1.4.1_02
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[email protected] (UPDATE NOTARZTEINSATZPROTOKOLL_1 SET NEUROLOGISCHER_ERSTBEFUND = ? WHERE NAP_ID = ? AND EP_ID = ? AND BEMERKUNG IS NULL AND SOZ_ID IS NULL AND PSYZ_ID IS NULL AND ERSTBEFUND_ZEITPUNKT IS NULL AND GCSAO_ID_EB IS NULL AND GCSBVR_ID_EB IS NULL AND GCSBMR_ID_ARMLINKS_EB IS NULL AND GCSBMR_ID_ARMRECHTS_EB IS NULL AND GCSBMR_ID_BEINLINKS_EB IS NULL AND GCSBMR_ID_BEINRECHTS_EB IS NULL AND BWSL_ID_EB IS NULL AND EXTB_ID_ARMLINKS_EB IS NULL AND EXTB_ID_ARMRECHTS_EB IS NULL AND EXTB_ID_BEINLINKS_EB IS NULL AND EXTB_ID_BEINRECHTS_EB IS NULL AND PUPW_ID_LINKS_EB IS NULL AND PUPW_ID_RECHTS_EB IS NULL AND EJN_ID_FEHLTLICHTR_LI_EB IS NULL AND EJN_ID_FEHLTLICHTR_RE_EB IS NULL AND EJN_ID_MENINGISMUS_EB IS NULL AND NEUROLOGISCHER_ERSTBEFUND IS NULL AND TEMPERATUR_EB IS NULL AND RR_SYSTOLISCH_EB IS NULL AND RR_DIASTOLISCH_EB IS NULL AND HERZFREQUENZ_EB IS NULL AND EJN_ID_HF_REGELM_EB IS NULL AND BLUTZUCKER_EB IS NULL AND ATEMFREQUENZ_EB IS NULL AND SPO2_EB IS NULL AND CO2_EB IS NULL AND SCHM_ID_EB IS NULL AND ERH_ID_COR_EB IS NULL AND EELS_ID_COR_EB IS NULL AND EJN_ID_EKG_EMENTKOPPEL_EB IS NULL AND EERBST_ID_COR_EB IS NULL AND EHA_ID_COR_EB IS NULL AND ESVES_ID_COR_EB IS NULL AND EVES_ID_COR_EB IS NULL AND EKG_BEMERKUNG_EB IS NULL AND ATRH_ID_EB IS NULL AND EJN_ID_ZYANOSE_EB IS NULL AND EJN_ID_SPASTIK_EB IS NULL AND EJN_ID_RASSELGER_EB IS NULL AND EJN_ID_STRIDOR_EB IS NULL AND EJN_ID_VERLEGATEMW_EB IS NULL AND BEAM_ID_UEBERNAHME IS NULL AND ATMUNG_FREITEXT_EB IS NULL AND VERLM_ID IS NULL AND SCHWV_ID_SCHAEDELHIRN IS NULL AND SCHWV_ID_GESICHT IS NULL AND SCHWV_ID_HWS IS NULL AND SCHWV_ID_THORAX IS NULL AND SCHWV_ID_ABDOMEN IS NULL AND SCHWV_ID_BWSLWS IS NULL AND SCHWV_ID_BECKEN IS NULL AND SCHWV_ID_OEXTREMITAET IS NULL AND SCHWV_ID_UEXTREMITAET IS NULL AND SCHWV_ID_WEICHTEILE IS NULL AND VBRT_ID IS NULL AND TRT_ID IS NULL AND UHG_ID IS NULL AND SICHTK_ID IS NULL AND UNFALLZEITPUNKT IS NULL AND SAPS_2 IS NULL AND TISS_28 IS NULL AND NACA_ID IS NULL AND ZBV IS NULL )
=> com.sap.dbtech.jdbc.CallableStatementSapDB@11daf60
<at this position the trace-file ends?!; "NEUROLOGISCHER_ERSTBEFUND ist defined as
"NEUROLOGISCHER_ERSTBEFUND" Varchar (1000) ASCII; i also encountered this problem while handling shorter VARCHAR-columns with JComboBox-components...>
Any information would be very helpfully!!!
Greetings,
Arnd
Message was edited by: Arnd Benninghoff
Message was edited by: Arnd Benninghoff

Hi Arnd,
if I understand right you are trying to insert/update value into a Varchar(1000) column. And if you set a non numeric value you get an exception "java.lang.NumberFormatException", Right?
Of course this should work with MaxDB. The exception you get doesn't come from MaxDB's JDBC driver. The driver will only throw exceptions that are derived from java.sql.Exception.
So, I guess the error comes from a layer above the JDBC layer, possibly from the JDBC-components of <SunONE Community Edition Update 1>. This would also explain why you don't see any exception in the JDBC trace.
Did you have defined any constraints for the input field (JTextArea or JTextField)?
Hope that helps.
regards,
Marco

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I have a problem with JDialogs in my standalone application. This app pops-up multiple JDialogs, say a stack of JDialogs.
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Any ideas why JDialog1 is not working fine? Am I missing anything?
Thanks,
Srinivas.

Hi,
I have a component called DateComponent that works similar to a JComboBox. When you click a small button of DateComponent, it pops-up a Calendar similar to the drop down list of JComboBox and user can pick a date from it. It gets closed when it loses focus.
I have this DateComponent on JFrame1, JDialog1 and JDialog2. The Calendar is not being diaplayed on JDialog1 upon clicking the small button of DateComponent after JDialog2 is disposed. But it is being diaplayed properly on JDialog1 before JDialog1 opens JDialog2. What could be wrong?
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Hello,
I am new to Java (started learning two months back), There is a problem with the requestFocus() in the focusListener. The program does not return the focus to the object indicated in the requestFocus but it shows multiple cusors!!
The faculity at the institute where I am learning could not rectify the error.
Is the error because of the myMethod() which I am using. I had made this method to prove to my professor that we can reduce the code drastically while using the gridbaglayout.
The code which I had written is as under:
// file name ShopperApplet.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ShopperApplet extends JApplet implements ActionListener, FocusListener,Runnable
     //static JPanel sP;
     //static JPanel oP;
     JTabbedPane tabbedPane = new JTabbedPane();
     JPanel sP;
     JPanel oP;
     JPanel pwd = new JPanel();
     // Layout Decleration of oP
     GridBagLayout ordL = new GridBagLayout();
     GridBagConstraints ordC = new GridBagConstraints();
     // Layout Decleration of sP
     FlowLayout flow = new FlowLayout();
     // Variables of sP
          JTextField textShopperId;
          JPasswordField textPassword;
          JTextField textFirstName ;
          JTextField textLastName ;
          JTextField textEmailId ;
          JTextField textAddress ;
          JComboBox comboCity ;
          JTextField textState ;
          JTextField textCountryId ;
          JTextField textZipCode ;
          JTextField textPhone ;
          JTextField textCreditCardNo ;
          JRadioButton rbVisa;
          JRadioButton rbMaster;
          JRadioButton rbAmEx;
          ButtonGroup BGccType;
          //JComboBox comboCreditCardType;
          //JTextField textExperyDate;
          JComboBox cmbDt;
          JComboBox cmbMth;
          JComboBox cmbYear;
          JButton btnSubmit;
          JButton btnReset;
     // Variables of oP
          // Variable Decleration od oP
          JTextField txtOrderNo;
          JTextField txtToyId;
          JTextField txtQty;
          JRadioButton rbYes;
          JRadioButton rbNo;
          ButtonGroup bgGiftWrap;
          JComboBox cmbWrapperId;
          JTextField txtMsg;
          JTextField txtToyCost;
          JButton btnOSubmit;
          JButton btnOReset;
     // Variables of pwd
          JTextField txtShopperId;
          JPasswordField txtPassword;
          JButton btnPSubmit;
          JButton btnPReset;
          JButton btnPNew;
          JButton btnPLogoff;
          JLabel lblN, lblN1;
          Thread t,t1;
     Font TNR = new Font("Times New Roman",1,15);
     Font arial = new Font("Arial",2,15);
     public void sPDet()
          //Variable Decleration of sP
          textShopperId = new JTextField(6);
          textPassword = new JPasswordField(4);
          textPassword.addFocusListener(this);
          //textPassword = new JTextField(4);
          textPassword.setEchoChar('*');
          textFirstName = new JTextField(20);
          textLastName = new JTextField(20);
          textEmailId = new JTextField(25);
          textAddress = new JTextField(20);
          String cityList[] = {"New Delhi", "Mumbai", "Calcutta", "Hyderabad"};
          comboCity = new JComboBox(cityList);
          comboCity.setEditable(true);
          textState = new JTextField(30);
          textCountryId = new JTextField(25);
          textZipCode = new JTextField(6);
          textPhone = new JTextField(25);
          textCreditCardNo = new JTextField(25);
          String cardTypes[] = {"Visa", "Master Card", "American Express"};
          //comboCreditCardType = new JComboBox(cardTypes);
          rbVisa = new JRadioButton("Visa");
          rbMaster = new JRadioButton("Master Card");
          rbAmEx = new JRadioButton("American Express");
          BGccType = new ButtonGroup();
          BGccType.add(rbVisa);
          BGccType.add(rbMaster);
          BGccType.add(rbAmEx);
          String stDt[] = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"};
          String stMth[] = {"January","February","March","April","May","June","July","August","September","October","November","December"};
          String stYear[] = {"2001","2002","2003","2004","2005","2006","2007","2008","2009","2010"};
          cmbDt = new JComboBox(stDt);
          cmbMth = new JComboBox(stMth);
          cmbYear = new JComboBox(stYear);
          //textExperyDate = new JTextField(10);
          btnSubmit = new JButton("Submit");
          btnReset = new JButton("Reset");
          // Adding Layout Controls
          sP.setLayout(ordL);
          sP.setBackground(Color.green);
          myLayout(textShopperId,3,1,sP,"FM","Shopper Id");
          myLayout(textPassword,3,2,sP,"FM","Password");
          myLayout(textFirstName,3,3,sP,"FM","First Name") ;
          myLayout(textLastName,3,4,sP,"FM","Last Name") ;
          myLayout(textEmailId,3,5,sP,"FM","E-Mail Id") ;
          myLayout(textAddress,3,6,sP,"FM", "Address") ;
          myLayout(comboCity,3,7,sP,"FM","City") ;
          myLayout(textState,3,8,sP,"FM","State") ;
          myLayout(textCountryId,3,9,sP,"FM","Country") ;
          myLayout(textZipCode,3,10,sP,"FM","Zip Code") ;
          myLayout(textPhone,3,11,sP,"FM","Phone") ;
          myLayout(textCreditCardNo,3,12,sP,"FM","Credit Card No.") ;
          //myLayout(rbVisa,3,13,sP);
          JPanel newPanel = new JPanel();
          newPanel.add(rbVisa);
          newPanel.add(rbMaster);
          newPanel.add(rbAmEx);
          myLayout(newPanel,3,13,sP,"FM","Credit Card Type");
          //myLayout(rbMaster,4,13);
          //myLayout(rbAmEx,5,13);
          JPanel newPanel1 = new JPanel();
          newPanel1.add(cmbDt);
          newPanel1.add(cmbMth);
          newPanel1.add(cmbYear);
          myLayout(newPanel1,3,14,sP,"FM","Expiry Date");
          //myLayout(textExperyDate,3,14,sP,"FM");
          myLayout(btnSubmit,1,17,sP,"AL","Submit");
          myLayout(btnReset,3,17,sP,"AL","Reset");
     public void oPDet()
          txtOrderNo = new JTextField(10);
          txtToyId = new JTextField(10);
          txtQty = new JTextField(10);
          rbYes = new JRadioButton("Yes");
          rbNo = new JRadioButton("No");
          bgGiftWrap = new ButtonGroup();
          bgGiftWrap.add(rbYes);
          bgGiftWrap.add(rbNo);
          String wrapperTypes[] = {"Blue Stripes", "Red Checks", "Green Crosses","Yellow Circles", "Red & Purple Stripes"};
          cmbWrapperId = new JComboBox(wrapperTypes);
          txtMsg = new JTextField(10);
          txtToyCost = new JTextField(10);
          btnOSubmit = new JButton("Submit");
          btnOReset = new JButton("Reset");
          // Adding Controls to oP
          oP.setLayout(ordL);
          oP.setBackground(Color.yellow);
          myLayout(txtOrderNo,3,1,oP,"FM","Order No.");
          myLayout(txtToyId,3,2,oP,"FM","Toy Id");
          myLayout(txtQty,3,3,oP,"FM","Quantity");
          myLayout(rbYes,3,4,oP,"M");
          myLayout(rbNo,4,4,oP,"M");
          myLayout(cmbWrapperId,3,5,oP,"M","Wrapper Id");
          myLayout(txtMsg,3,6,oP,"FM","Message");
          myLayout(txtToyCost,3,7,oP,"FM","Toy Cost");
          myLayout(btnOSubmit,1,8,oP,"AL","Submit");
          myLayout(btnOReset,3,8,oP,"AL","Reset");
     public void pwdDet()
          pwd.setLayout(ordL);
          pwd.setBackground(Color.green);
          t = new Thread(this);
          t.start();
          t1 = new Thread(this);
          t1.start();
          lblN = new JLabel("");
          lblN1 = new JLabel("");
          txtShopperId = new JTextField(10);
          txtPassword = new JPasswordField(10);
          btnPSubmit = new JButton("Submit") ;
          btnPReset = new JButton("Reset");
          btnPNew = new JButton("New Member");
          btnPLogoff = new JButton("Log Off");
          pwd.setLayout(ordL);
          pwd.setBackground(Color.yellow);
          myLayout(lblN,3,7,pwd);
          myLayout(lblN1,3,8,pwd);
          myLayout(txtShopperId,3,1,pwd,"FM","Shopper Id.");
          myLayout(txtPassword,3,2,pwd,"FM","Password");
          myLayout(btnPSubmit,2,4,pwd,"AL","Submit");
          myLayout(btnPReset,3,4,pwd,"AL","Reset");
          myLayout(btnPNew,2,5,pwd,"AL","New");
          myLayout(btnPLogoff,3,5,pwd,"AL","Log Off");
     public void run()
          int ctr =0;
          String ili[] = {"India","is","a","Great","Country"};
          int ctr1 = 0;
          String iib[] = {"India","is","the","Best"};
          Thread myThread = Thread.currentThread();
          if (myThread == t)
               while (t != null)
                    lblN.setText(ili[ctr]);
                    ctr++;
                    if (ctr >=5) ctr=0;
                    try
                         t.sleep(500);
                    catch(InterruptedException e)
                         showStatus("India is a great Country has been interrupter");
          else
               while (t1 != null)
                    lblN1.setText(iib[ctr1]);
                    ctr1++;
                    if (ctr1 >=4) ctr1=0;
                    try
                         t1.sleep(1000);
                    catch(InterruptedException e)
                         showStatus("India is the best has been interrupter");
     public void myLayout(JComponent aObj, int x, int y, JPanel aPanel,String aListener,String toolTip)
          ordC.anchor=GridBagConstraints.NORTHWEST;
          JLabel aLabel = new JLabel(toolTip);
          ordC.gridx = x-1;
          ordC.gridy = y;
          ordL.setConstraints(aLabel,ordC);
          aPanel.add(aLabel);
          aObj.setToolTipText("Enter "+toolTip+" here");
          aObj.setForeground(Color.red);
          aObj.setBackground(Color.green);
          if (aListener.indexOf("F")     != -1)
               aObj.addFocusListener(this);
          //if (aListener.indexOf("M")     != -1)
               //aObj.addMouseListener(this);
          aObj.setFont(TNR);
          ordC.gridx = x;
          ordC.gridy = y;
          ordL.setConstraints(aObj,ordC);
          aPanel.add(aObj);
     public void myLayout(JComponent aObj, int x, int y, JPanel aPanel,String aListener)
          ordC.anchor=GridBagConstraints.NORTHWEST;
          aObj.setForeground(Color.red);
          aObj.setBackground(Color.green);
          if (aListener.indexOf("F")     != -1)
               aObj.addFocusListener(this);
          //if (aListener.indexOf("M")     != -1)
               //aObj.addMouseListener(this);
          aObj.setFont(TNR);
          ordC.gridx = x;
          ordC.gridy = y;
          ordL.setConstraints(aObj,ordC);
          aPanel.add(aObj);
     public void myLayout(JButton aObj, int x, int y, JPanel aPanel,String aListener, String toolTip)
          aObj.setToolTipText(toolTip);
          ordC.anchor=GridBagConstraints.NORTHWEST;
          aObj.setForeground(Color.red);
          if (aListener.indexOf("F")     != -1)
               aObj.addFocusListener(this);
          //if (aListener.indexOf("M")     != -1)
               //aObj.addMouseListener(this);
          if (aListener.indexOf("A")     != -1)
               aObj.addActionListener(this);
          aObj.setFont(TNR);
          ordC.gridx = x;
          ordC.gridy = y;
          ordL.setConstraints(aObj,ordC);
          aPanel.add(aObj);
     public void myLayout(JTextField aObj, int x, int y, JPanel aPanel,String aListener,String toolTip)
          ordC.anchor=GridBagConstraints.NORTHWEST;
          //aObj = new JTextField(10);
          JLabel aLabel = new JLabel(toolTip);
          ordC.gridx = x-1;
          ordC.gridy = y;
          ordL.setConstraints(aLabel,ordC);
          aPanel.add(aLabel);
          aObj.setToolTipText("Enter "+toolTip+" here");
          aObj.setForeground(Color.red);
          if (aListener.indexOf("F")     != -1)
               aObj.addFocusListener(this);
          //if (aListener.indexOf("M")     != -1)
          //     aObj.addMouseListener(this);
          if (aListener.indexOf("A")     != -1)
               aObj.addActionListener(this);
          aObj.setFont(TNR);
          ordC.gridx = x;
          ordC.gridy = y;
          ordL.setConstraints(aObj,ordC);
          aPanel.add(aObj);
     public void myLayout(JLabel aObj, int x, int y, JPanel aPanel)
          ordC.anchor=GridBagConstraints.SOUTH;
          aObj.setForeground(Color.blue);
          aObj.setFont(TNR);
          ordC.gridx = x;
          ordC.gridy = y;
          ordL.setConstraints(aObj,ordC);
          aPanel.add(aObj);
     public void init()
          getContentPane().add(tabbedPane);
          sP = new JPanel();
          sPDet();
          oP = new JPanel();
          oPDet();
          pwdDet();
          tabbedPane.addTab("Login",null,pwd,"Login");
          tabbedPane.addTab("Shopper",null,sP,"Shopper Details");
          tabbedPane.addTab("Order",null,oP,"Order Details");
          tabbedPane.setEnabledAt(2, false);
          tabbedPane.setEnabledAt(1, false);
     public void actionPerformed(ActionEvent e)
          Object obj = e.getSource();
          if (obj == btnSubmit)
               if (validShopperId() == false) return;
               if (validPassword() == false) return;
               if (validFirstName() == false) return ;
               if (validLastName() == false) return ;
               if (validEmailId() == false) return;
               if (validAddress() == false) return;
               if (validState() == false) return;
               if (validCountryId() == false) return;
               if (validZipCode() == false) return;
               if (validCreditCardNo() == false) return ;
               resetShopper();
               tabbedPane.setEnabledAt(1,false);
               tabbedPane.setEnabledAt(2,false);
               tabbedPane.setSelectedIndex(0);
               // also can be written as tabbedPane.setSelectedComponent(pwd);
               //tabbedPane.remove(sP);
          if (obj == btnReset)
               resetShopper();
               tabbedPane.setEnabledAt(2,false);
               //textExperyDate.setText("");
          if (obj == btnOSubmit)
               if (validOrderNo() == false) return;
               if (validToyId() == false) return;
               if (chkNullEntry(txtQty, "Quantity")) return ;
               if (chkNullEntry(txtToyCost, "Toy Cost")) return ;
          if (obj == btnOReset)
               resetOrder();
          if (obj == btnPSubmit)
               if (validPShopperId() && validPPassword())
                    tabbedPane.setEnabledAt(2, true);
                    tabbedPane.setEnabledAt(1, false);
                    txtShopperId.setText("");
                    txtPassword.setText("");
                    resetPassword();
                    //tabbedPane.addTab("Order",null,oP,"Order Details");
          if (obj == btnPReset)
               resetPassword();
               tabbedPane.setEnabledAt(1, false);
               tabbedPane.setEnabledAt(2, false);
          if (obj == btnPNew)
               tabbedPane.setEnabledAt(1, true);
               tabbedPane.setEnabledAt(2, false);
               resetPassword();
               tabbedPane.setSelectedComponent(sP);
               //tabbedPane.addTab("Shopper",null,sP,"Shopper Details");
          if (obj == btnPLogoff)
               tabbedPane.setEnabledAt(2, false);
               tabbedPane.setEnabledAt(1, false);
               resetPassword();
     public void focusGained(FocusEvent fe)
          //Object aObj = fe.getSource();
          //showStatus("Current Object is "+aObj);
     public void resetPassword()
          txtShopperId.setText("");
          txtPassword.setText("");
     public void resetShopper()
               textShopperId.setText("");
               textPassword.setText("");
               textFirstName.setText("") ;
               textLastName.setText("") ;
               textEmailId.setText("") ;
               textAddress.setText("") ;
               textState.setText("") ;
               textCountryId.setText("") ;
               textZipCode.setText("") ;
               textPhone.setText("") ;
               textCreditCardNo.setText("") ;
     public void resetOrder()
          txtOrderNo.setText("");
          txtToyId.setText("");
          txtQty.setText("") ;
          txtToyCost.setText("") ;
          txtMsg.setText("") ;
     public void focusLost(FocusEvent fe)
          try{
               Object obj = fe.getSource();
               if (obj == textShopperId &&     validShopperId() == false)
                    //textShopperId.requestFocus();
                    return;
               if (obj == textPassword && validPassword() == false)
                    //textPassword.requestFocus();
                    return;
               if (obj == textFirstName && validFirstName() == false)
                    //textFirstName.requestFocus();
                    return;
               if (obj == textEmailId && validEmailId() == false)
                    //textEmailId.requestFocus();
                    return;
               if (obj == txtOrderNo && validOrderNo() == false)
                    //txtOrderNo.requestFocus();
                    return;
               if (obj == txtToyId && validToyId() == false);
                    //txtToyId.requestFocus();
                    return;
          catch(Exception e)
               showStatus("error in LostFocus() Method");
     public boolean validShopperId()
          if (chkNullEntry(textShopperId,"Shopper Id")) return false;
          return true;
     public boolean validPassword()
          if (chkNullEntry(textPassword,"Password")) return false;
          return true;
     public boolean validFirstName()
          if (chkNullEntry(textFirstName,"First Name")) return false;
          return true;
     public boolean validLastName()
          if (chkNullEntry(textLastName,"Last Name")) return false;
          return true;
     public boolean validAddress()
          if (chkNullEntry(textAddress,"Address")) return false;
          return true;
     public boolean validState()
          if (chkNullEntry(textState,"State")) return false;
          return true;
     public boolean validCountryId()
          if (chkNullEntry(textCountryId,"Country")) return false;
          return true;
     public boolean validZipCode()
          if (chkNullEntry(textZipCode,"Postal Code")) return false;
          return true;
     public boolean validCreditCardNo()
          if (chkNullEntry(textCreditCardNo,"Credit Card No.")) return false;
          return true;
     public boolean validEmailId()
          if (chkNullEntry(textEmailId,"Email Address")) return false;
          String s1 = textEmailId.getText();
          int abc = s1.indexOf("@");
          if (abc == -1 || abc == 0 || abc == (s1.length()-1))
               JOptionPane.showMessageDialog(sP,"Invalid Email Address","Error Message",JOptionPane.ERROR_MESSAGE);
               //textEmailId.requestFocus();
               return false;
          return true;
     public boolean validOrderNo()
          if (chkNullEntry(txtOrderNo,"Order No.")) return false;
          return true;
     public boolean validToyId()
          if (chkNullEntry(txtToyId,"Toy Id")) return false;
          return true;
     public boolean chkNullEntry(JTextField aObj,String sDef)
          String s1 = aObj.getText();
          if (s1.length() ==0)
               try
                    JOptionPane.showMessageDialog(sP,sDef+" cannot be left blank","Error Message",JOptionPane.ERROR_MESSAGE);
                    //showStatus(sDef+" cannot be left blank");
                    // nbvvvv vcz     z111111eeeefgggggggggg aObj.requestFocus();
               catch(Exception e)
                    showStatus("Error in chkNullEntry() method");
               return true ;
          else
               return false;
     public boolean validPShopperId()
          if (chkNullEntry(txtShopperId,"Shopper Id")) return false;
          return true;
     public boolean validPPassword()
          if (chkNullEntry(txtPassword,"Password")) return false;
          return true;
// end of code.

Would it not be acceptable to check that each field has a value when Submit is pressed. If a field is found with no data then display the error message and return the focus to the empty field. This would solve the multiple cursors problem as you would not need any focusLost handler code.
If this is entirely out of the question then you will have to override some of the FocusManager methods to prevent the JVM from handling focus for you :
FocusManager.setCurrentManager(new DefaultFocusManager() {
// Override FocusManager methods here.
});Ronny.

Problem with JComboBox in j2sdk 1.4.2_01

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