Facing problem with combobox

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.JTextField;
import javax.swing.UIManager;


public class DTMSrcTgtSelection extends JDialog {

String type;
JButton oKBut,canBut;

//static List<String> srcList, tgtList;

List<String> connList=DTMCommon.getConnList();
String[] connArr=connList.toArray(new String[connList.size()]);
List<String> connList1;
JComboBox srcConn=new JComboBox(connArr);
JComboBox tgtConn=new JComboBox(connArr);

public DTMSrcTgtSelection(String type) {

this.type=type;

setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE) ;
//srcList=connList;
//tgtList=connList;

//srcConn=new JComboBox(srcList.toArray());

srcConn.setEditable(true);

/* srcConn.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
String item=(String) srcConn.getSelectedItem();
System.out.println(item);
//System.out.println(tgtConn.getallitems());
int l=tgtConn.getItemCount();
System.out.println(l);
for(int i=0;i<l;i++){
String name=(String) tgtConn.getItemAt(i);
System.out.println(name);
}
tgtConn.removeItem(item);
System.out.println();
int l1=tgtConn.getItemCount();
System.out.println(l1);
for(int i=0;i<l1;i++){
String name=(String) tgtConn.getItemAt(i);
System.out.println(name);
}
// TODO Auto-generated method stub

}
});
*/

//tgtConn=new JComboBox(tgtList.toArray());

tgtConn.setEditable(true);
/* tgtConn.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
String item=(String) tgtConn.getSelectedItem();
int l=srcConn.getItemCount();
System.out.println(l);
for(int i=0;i<l;i++){
String name=(String) srcConn.getItemAt(i);
System.out.println(name);
}

srcConn.removeItem(item);
System.out.println();
int l1=srcConn.getItemCount();
System.out.println(l1);
for(int i=0;i<l1;i++){
String name=(String) srcConn.getItemAt(i);
System.out.println(name);
}
// TODO Auto-generated method stub

}
});*/
// tgtConn=new JComboBox(tgtList.toArray());
//tgtConn=new JComboBox(connArr);


//setTitle("Data Masking Utillity");
setDefaultCloseOperation(DISPOSE_ON_CLOSE);


//code for selected connection should be appear in only one of the source n target comboboxes

if(type.equals("source")){

JPanel srcPanel = new JPanel(new GridBagLayout());


JLabel srcList = new JLabel("Source Connection : ");

GridBagConstraints constraints1 = DTMCommon.getConstraints(null,
GridBagConstraints.NONE, GridBagConstraints.WEST,
0, 0, 0, 0, 0, 0);
srcPanel.add(srcList,constraints1);
srcPanel.setBackground(Color.gray);

constraints1 = DTMCommon.getConstraints(constraints1,
GridBagConstraints.NONE, GridBagConstraints.WEST,
0, 1, 0, 0, 0, 0);
srcPanel.add(srcConn,constraints1);

srcConn.setEditable(true);

JPanel OkCancelPane = new JPanel(new GridBagLayout());
OkCancelPane.setBackground(Color.gray);
OkCancelPane.setOpaque(true);
oKBut = new JButton("OK");
oKBut.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
String item=(String) srcConn.getSelectedItem();

tgtConn.removeItem(item);
//updateConnarr(connArr,item);
//updateList(srcConn);
// TODO Auto-generated method stub
dispose();
}
});
canBut = new JButton("Cancel");
/*canBut.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e)
{
dispose();
}
});*/
OkCancelPane.add(oKBut);
OkCancelPane.add(canBut);

JSplitPane srcTgt_ConnButPane_okCancelPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,srcPanel,OkCa ncelPane);
srcTgt_ConnButPane_okCancelPane.setDividerLocation (65);
srcTgt_ConnButPane_okCancelPane.setDividerSize(0);
getContentPane().add(srcTgt_ConnButPane_okCancelPa ne);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setTitle("DTMUtility");
//setModalityType(ModalityType.APPLICATION_MODAL);
setLocationRelativeTo(null);
//setSize(new Dimension(520, 300));
setSize(new Dimension(400,150));
setBackground(Color.white);
setVisible(true);

}

if(type.equals("target")){


JPanel tgtPanel = new JPanel(new GridBagLayout());

JLabel tgtList = new JLabel("Target Connection : ");

GridBagConstraints constraints1 = DTMCommon.getConstraints(null,
GridBagConstraints.NONE, GridBagConstraints.WEST,
0, 0, 0, 0, 0, 0);
tgtPanel.add(tgtList,constraints1);
tgtPanel.setBackground(Color.gray);

constraints1 = DTMCommon.getConstraints(constraints1,
GridBagConstraints.NONE, GridBagConstraints.WEST,
0, 1, 0, 0, 0, 0);
tgtPanel.add(tgtConn,constraints1);

JPanel OkCancelPane = new JPanel(new GridBagLayout());
OkCancelPane.setBackground(Color.gray);
OkCancelPane.setOpaque(true);
oKBut = new JButton("OK");
oKBut.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
String item=(String) tgtConn.getSelectedItem();

srcConn.removeItem(item);
//updateList(srcConn);
// TODO Auto-generated method stub
dispose();
}
});
canBut = new JButton("Cancel");
/*canBut.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e)
{
dispose();
}
});*/
OkCancelPane.add(oKBut);
OkCancelPane.add(canBut);


JSplitPane srcTgt_ConnButPane_okCancelPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,tgtPanel,OkCa ncelPane);
srcTgt_ConnButPane_okCancelPane.setDividerLocation (65);
srcTgt_ConnButPane_okCancelPane.setDividerSize(0);
getContentPane().add(srcTgt_ConnButPane_okCancelPa ne);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setTitle("DTMUtility");
//setModalityType(ModalityType.APPLICATION_MODAL);
setLocationRelativeTo(null);
setSize(new Dimension(400,150));
setBackground(Color.white);
setVisible(true);

}




}

protected void updateConnarr(String[] connArr2, String item) {
connArr2=connArr;

// TODO Auto-generated method stub

}






}




above code when i will click on source from menu the selected item should not appear in the target and vice versa . action also firing but the problem is the target r source combobox also disappearing all the items including the removed item..plz help me to get out of this..

Firstly, this belongs in the AWT / Swing subforum. Don't make another thread now, just remember for future posting.

Secondly, please use highlight tags to surround your code in so that it is easy to read. Right now it would take hours to decipher your code. Use highlight tags like this:

[highlight=Java]//your code here[/highlight]

Finally, you'll need to be more explicit in the description of your problem. What variables are the issue? Are you getting errors (if so, post them)?

Thread moved to the appropriate forum, and ditto snowguy's post