JComboBox in panel

[Nicky Eng]

i have comboBox in my panel.
and i want it to be display as normal as below:



but, after i run it, i got this :



the box of scrolling down is missing, still it can scroll down to select item.
I just want the box appear in normal display.

my code is fine rite?
here is it is:

   
JComboBox cb= new JComboBox();
 
cd.addItem("1");
cd.addItem("2");
cd.addItem("3");
add(cd);
cd.setBounds(100,100,65, 22);
cd.setOpaque(true);
 
 

so where is it wrong?

[Michael Dunn]

works OK for me.

post a working sample program, which displays the problem.

[Nicky Eng]

here is the sample after i run it:


i separate the panel and frame as different class.

here is my panel class:

   
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class CustBookPanel extends javax.swing.JPanel {
 

    public CustBookPanel() {
        initComponents();
    }
 

    private void initComponents() {
        titleLabel = new javax.swing.JLabel();
        sp1 = new javax.swing.JSeparator();
        fnLabel = new javax.swing.JLabel();
        lnLabel = new javax.swing.JLabel();
        contactLabel = new javax.swing.JLabel();
        add1Label = new javax.swing.JLabel();
        add2Label = new javax.swing.JLabel();
        emailLabel = new javax.swing.JLabel();
        firstNameTf = new javax.swing.JTextField();
        lastNameTf = new javax.swing.JTextField();
        contactTf = new javax.swing.JTextField();
        add2Tf = new javax.swing.JTextField();
        addTf = new javax.swing.JTextField();
        emailTf = new javax.swing.JTextField();
        srLabel = new javax.swing.JLabel();
        seatBox = new javax.swing.JComboBox();
        totalLabel = new javax.swing.JLabel();
        totalDisplay = new javax.swing.JTextField();
        sp2 = new javax.swing.JSeparator();
 
        setLayout(null);
setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
 
        titleLabel.setFont(new java.awt.Font("Arial", 0, 18));
        titleLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        titleLabel.setText("Customer Seat Reversation");
        titleLabel.setOpaque(true);
        add(titleLabel);
        titleLabel.setBounds(190, 10, 260, 30);
 
        add(sp1);
        sp1.setBounds(40, 60, 590, 20);
 
        fnLabel.setText("First Name : ");
        add(fnLabel);
        fnLabel.setBounds(50, 80, 80, 20);
 
        lnLabel.setText("Last Name :");
        add(lnLabel);
        lnLabel.setBounds(50, 120, 80, 20);
 
        contactLabel.setText("Contact Number :");
        add(contactLabel);
        contactLabel.setBounds(50, 160, 100, 20);
 
        add1Label.setText("Address 1 :");
        add(add1Label);
        add1Label.setBounds(50, 200, 90, 20);
 
        add2Label.setText("Address 2 :");
        add(add2Label);
        add2Label.setBounds(50, 240, 90, 20);
 
        emailLabel.setText("Email Address :");
        add(emailLabel);
        emailLabel.setBounds(50, 280, 100, 20);
 
        add(firstNameTf);
        firstNameTf.setBounds(160, 80, 150, 22);
 
        add(lastNameTf);
        lastNameTf.setBounds(160, 120, 150, 22);
 
        contactTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(contactTf);
        contactTf.setBounds(160, 160, 100, 22);
 
        add(add2Tf);
        add2Tf.setBounds(160, 240, 290, 22);
 
        add(addTf);
        addTf.setBounds(160, 200, 290, 22);
 
        add(emailTf);
        emailTf.setBounds(160, 280, 270, 22);
 
        srLabel.setText("Seat Reserved : ");
        add(srLabel);
        srLabel.setBounds(390, 80, 100, 20);
 
        seatBox.addItem("1");
        seatBox.addItem("2");
        seatBox.addItem("3");
        seatBox.addItem("4");
        seatBox.addItem("5");
        seatBox.addItem("6");
        seatBox.addItem("7");
        seatBox.addItem("8");
        seatBox.addItem("9");
        seatBox.addItem("10");
        add(seatBox);
        seatBox.setBounds(490, 80, 50, 22);
        seatBox.setOpaque(true);
        seatBox.setSelectedIndex(0);
 
        totalLabel.setText("Total ($) :");
        add(totalLabel);
        totalLabel.setBounds(390, 120, 90, 20);
 
        add(totalDisplay);
        totalDisplay.setBounds(490, 120, 70, 22);
 
        add(sp2);
        sp2.setBounds(40, 340, 590, 20);
 
    }// </editor-fold>
 

    // Variables declaration - do not modify
    private javax.swing.JLabel add1Label;
    private javax.swing.JLabel add2Label;
    private javax.swing.JTextField add2Tf;
    private javax.swing.JTextField addTf;
    private javax.swing.JLabel contactLabel;
    private javax.swing.JTextField contactTf;
    private javax.swing.JLabel emailLabel;
    private javax.swing.JTextField emailTf;
    private javax.swing.JTextField firstNameTf;
    private javax.swing.JLabel fnLabel;
    private javax.swing.JTextField lastNameTf;
    private javax.swing.JLabel lnLabel;
    private javax.swing.JComboBox seatBox;
    private javax.swing.JSeparator sp1;
    private javax.swing.JSeparator sp2;
    private javax.swing.JLabel srLabel;
    private javax.swing.JLabel titleLabel;
    private javax.swing.JTextField totalDisplay;
    private javax.swing.JLabel totalLabel;
    // End of variables declaration
 
}
 

[Nicky Eng]

i got this in my frame class:

plaf= "javax.swing.plaf.metal.MetalLookAndFeel";
 
try{
UIManager.setLookAndFeel(plaf);
SwingUtilities.updateComponentTreeUI(connectDialog.this);
}
catch(Exception e){ e.printStackTrace(); }

when i change it to "com.sun.java.swing.plaf.motif.MotifLookAndFeel", it works on that.
how come metallookandfeel not displaying well?

[Michael Dunn]

shows up normally on my PC
winxp pro sp2, java 1.5.0_05

if you are using a different os, search sun's bug database, keywords
[os name] JComboBox Arrow ArrowButton

[Nicky Eng]

winxp home sp2, java 1.5.0_05

[Michael Dunn]

"javax.swing.plaf.metal.MetalLookAndFeel"

also works OK (default for 1.5??)

[Michael Dunn]

weird, the only diff is home vs pro, which, to me, shouldn't make a difference

here's your code stripped down to just the combobox and separators, which
runs OK on my pc

run on yours, see if it still shows incorrectly

    
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
class CustBookPanel extends javax.swing.JPanel {
    public CustBookPanel() {
      setPreferredSize(new Dimension(700,400));//<---added this
        initComponents();
    }
    private void initComponents() {
        sp1 = new javax.swing.JSeparator();
        seatBox = new javax.swing.JComboBox();
        sp2 = new javax.swing.JSeparator();
        setLayout(null);
        add(sp1);
        sp1.setBounds(40, 60, 590, 20);
        seatBox.addItem("1");
        seatBox.addItem("2");
        seatBox.addItem("3");
        add(seatBox);
        seatBox.setBounds(490, 80, 50, 22);
        add(sp2);
        sp2.setBounds(40, 340, 590, 20);
    }
    private javax.swing.JComboBox seatBox;
    private javax.swing.JSeparator sp1;
    private javax.swing.JSeparator sp2;
}
 
class Testing extends JFrame
{
  public Testing()
  {
    try{
        UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        SwingUtilities.updateComponentTreeUI(Testing.this);
      }
    catch(Exception e){ e.printStackTrace(); }
    add(new CustBookPanel());
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    pack();
    setVisible(true);
  }
  public static void main(String[] args){new Testing();}
}

[Nicky Eng]

your code runs ok.
so something wrong with my separator?

[Michael Dunn]

the separators are OK - I left them in only for 'dressing'

must be something else in your code, something you haven't posted.

as mentioned earlier, post something that we can copy/paste/compile/run and
see the problem.

unfortunately I'm off to work now, so I won't be able to check back for a while.
someone else might be able to isolate the problem.

[Nicky Eng]

ok. thanks for your posts.
now i will included all my coding needed :

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class theatre extends javax.swing.JFrame implements ActionListener{
 
    public theatre() {
        initComponents();
    }
 
    private void initComponents() {
 
timeLabel=new JLabel();
    sysLabel = new javax.swing.JLabel();
btnCon = new JButton();
btnConfirm = new JButton();
menuBar = new javax.swing.JMenuBar();
    fileMenu = new javax.swing.JMenu();
   connectM = new javax.swing.JMenuItem();
    exitM = new javax.swing.JMenuItem();
optionMenu = new JMenu();
custM= new JMenuItem();
custMenu = new JMenu();
oneCustM = new JMenuItem();
otherMenu = new JMenu();
aboutM = new JMenuItem();
 
plaf= "javax.swing.plaf.metal.MetalLookAndFeel";
 
try{
UIManager.setLookAndFeel(plaf);
SwingUtilities.updateComponentTreeUI(theatre.this);
}
catch(Exception e){ e.printStackTrace(); }
 
        getContentPane().setLayout(null);
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("eBook Entry");
setResizable(false);
        sysLabel.setFont(new java.awt.Font("Century Gothic", 1, 36));
        sysLabel.setForeground(java.awt.Color.magenta);
        sysLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        sysLabel.setText("eBook Theatre System");
        sysLabel.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
        getContentPane().add(sysLabel);
        sysLabel.setBounds(300, 10, 430, 60);
 
btnCon.setFont(new java.awt.Font("Tahoma", 1, 12));
btnCon.setText("Next");
getContentPane().add(btnCon);
        btnCon.setBounds(600, 620, 100, 30);
btnCon.addActionListener(this);
 
btnConfirm.setFont(new java.awt.Font("Tahoma", 1, 12));
btnConfirm.setText("Confirm");
getContentPane().add(btnConfirm);
        btnConfirm.setBounds(600, 620, 100, 30);
btnConfirm.addActionListener(this);
 
//file menu set up and have 2 item inside : Connect and Exit.
fileMenu.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
    fileMenu.setBorderPainted(true);
fileMenu.setFont(new java.awt.Font("Arial", 0, 18));
   fileMenu.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
   fileMenu.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
fileMenu.setText("File");
fileMenu.setPreferredSize(new java.awt.Dimension(78, 27));
 
fileMenu.add(connectM);
fileMenu.addSeparator();
fileMenu.add(exitM);
 
    connectM.setText("Sign In As...");
connectM.addActionListener(this);
 
exitM.setText("Exit");
exitM.addActionListener(this);
 
// set up Options menu and add Customer menuItem into it.
optionMenu.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
    optionMenu.setBorderPainted(true);
optionMenu.setFont(new java.awt.Font("Arial", 0, 18));
optionMenu.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
   optionMenu.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
optionMenu.setText("Options");
optionMenu.setPreferredSize(new java.awt.Dimension(85, 27));
 
custM.setText("All Customers Reservation");
custM.addActionListener(this);
 
custMenu.setText("Search ... ");
custMenu.add(oneCustM);
 
oneCustM.setText("Search by One");
oneCustM.addActionListener(this);
 
optionMenu.add(custM);
optionMenu.addSeparator();
optionMenu.add(custMenu);
 
// Set up the Other menu and other menu item.
otherMenu.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
    otherMenu.setBorderPainted(true);
otherMenu.setFont(new java.awt.Font("Arial", 0, 18));
otherMenu.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
   otherMenu.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
otherMenu.setText("Others");
otherMenu.setPreferredSize(new java.awt.Dimension(83,27));
 
otherMenu.add(aboutM);
 
aboutM.setText("About...");
aboutM.addActionListener(this);
// ----------------------------------------
 
menuBar.setMaximumSize(new java.awt.Dimension(0, 50));
    menuBar.setPreferredSize(new java.awt.Dimension(0, 45));
 
 
    menuBar.add(fileMenu);
menuBar.add(optionMenu);
menuBar.add(otherMenu);
 
setJMenuBar(menuBar);
 
        pack();
setSize(1024,740);
    }
public void addCustPanel()
{
cust_pane = new CustBookPanel();
getContentPane().add(cust_pane);
cust_pane.setBounds(230,130,680,400);
}
 
 
 
public void actionPerformed(ActionEvent ae)
{
if(ae.getSource()==connectM)
{
 
}
if(ae.getSource()==exitM)
{
System.exit(0);
}
if(ae.getSource()==custM)
{
 
}
if(ae.getSource()==aboutM)
{
 
}
if(ae.getSource()==oneCustM)
{
 
}
if(ae.getSource()==btnCon)
{
 
}
 
if(ae.getSource()==btnConfirm)
{
 
}
}
 
private JLabel timeLabel;
private javax.swing.JLabel sysLabel;
private javax.swing.JMenuBar menuBar;
     private javax.swing.JMenuItem connectM;
    private javax.swing.JMenuItem exitM;
    private javax.swing.JMenu fileMenu;
private JMenu optionMenu;
private JMenuItem custM;
private JMenu custMenu;
private JMenuItem oneCustM;
private JMenu otherMenu;
private JMenuItem aboutM;
private JButton btnCon;
private JButton btnConfirm;
private CustBookPanel cust_pane;
 
private String plaf;
}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class CustBookPanel extends javax.swing.JPanel {
 
    public CustBookPanel() {
        initComponents();
    }
 

    private void initComponents() {
        titleLabel = new javax.swing.JLabel();
        fnLabel = new javax.swing.JLabel();
        lnLabel = new javax.swing.JLabel();
        contactLabel = new javax.swing.JLabel();
        add1Label = new javax.swing.JLabel();
        add2Label = new javax.swing.JLabel();
        emailLabel = new javax.swing.JLabel();
        srLabel = new javax.swing.JLabel();
       totalLabel = new javax.swing.JLabel();
 
        firstNameTf = new javax.swing.JTextField();
        lastNameTf = new javax.swing.JTextField();
        contactTf = new javax.swing.JTextField();
        add2Tf = new javax.swing.JTextField();
        addTf = new javax.swing.JTextField();
        emailTf = new javax.swing.JTextField();
        totalDisplay = new javax.swing.JTextField();
 
        seatBox = new javax.swing.JComboBox();
        sp1 = new javax.swing.JSeparator();
        sp2 = new javax.swing.JSeparator();
 
        setLayout(null);
setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
 
        titleLabel.setFont(new java.awt.Font("Arial", 0, 18));
        titleLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        titleLabel.setText("Customer Seat Reversation");
        titleLabel.setOpaque(true);
        add(titleLabel);
        titleLabel.setBounds(190, 10, 260, 30);
 
        add(sp1);
        sp1.setBounds(40, 60, 590, 15);
 
        fnLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        fnLabel.setText("First Name : ");
        add(fnLabel);
        fnLabel.setBounds(50, 80, 80, 20);
 
        lnLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        lnLabel.setText("Last Name :");
        add(lnLabel);
        lnLabel.setBounds(50, 120, 80, 20);
 
        contactLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        contactLabel.setText("Contact Number :");
        add(contactLabel);
        contactLabel.setBounds(50, 160, 100, 20);
 
        add1Label.setFont(new java.awt.Font("Tahoma", 0, 12));
        add1Label.setText("Address 1 :");
        add(add1Label);
        add1Label.setBounds(50, 200, 90, 20);
 
        add2Label.setFont(new java.awt.Font("Tahoma", 0, 12));
        add2Label.setText("Address 2 :");
        add(add2Label);
        add2Label.setBounds(50, 240, 90, 20);
 
        emailLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        emailLabel.setText("Email Address :");
        add(emailLabel);
        emailLabel.setBounds(50, 280, 100, 20);
 
        firstNameTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(firstNameTf);
        firstNameTf.setBounds(160, 80, 150, 22);
 
        lastNameTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(lastNameTf);
        lastNameTf.setBounds(160, 120, 150, 22);
 
        contactTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(contactTf);
        contactTf.setBounds(160, 160, 100, 22);
 
        add2Tf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(add2Tf);
        add2Tf.setBounds(160, 240, 290, 22);
 
        addTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(addTf);
        addTf.setBounds(160, 200, 290, 22);
 
        emailTf.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(emailTf);
        emailTf.setBounds(160, 280, 270, 22);
 
        srLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        srLabel.setText("Seat Reserved : ");
        add(srLabel);
        srLabel.setBounds(390, 80, 100, 20);
 
        seatBox.setFont(new java.awt.Font("Tahoma", 0, 12));
        seatBox.addItem("1");
        seatBox.addItem("2");
        seatBox.addItem("3");
        seatBox.addItem("4");
        seatBox.addItem("5");
        seatBox.addItem("6");
        seatBox.addItem("7");
        seatBox.addItem("8");
        seatBox.addItem("9");
        seatBox.addItem("10");
        add(seatBox);
        seatBox.setBounds(495, 80, 50, 22);
        seatBox.setOpaque(true);
        seatBox.setSelectedIndex(0);
 
        totalLabel.setFont(new java.awt.Font("Tahoma", 0, 12));
        totalLabel.setText("Total ($) :");
        add(totalLabel);
        totalLabel.setBounds(390, 120, 90, 20);
 
        totalDisplay.setFont(new java.awt.Font("Tahoma", 0, 12));
        add(totalDisplay);
        totalDisplay.setBounds(490, 120, 70, 22);
 
        add(sp2);
        sp2.setBounds(40, 340, 590, 20);
 
    }
    private javax.swing.JLabel add1Label;
    private javax.swing.JLabel add2Label;
    private javax.swing.JTextField add2Tf;
    private javax.swing.JTextField addTf;
    private javax.swing.JLabel contactLabel;
    private javax.swing.JTextField contactTf;
    private javax.swing.JLabel emailLabel;
    private javax.swing.JTextField emailTf;
    private javax.swing.JTextField firstNameTf;
    private javax.swing.JLabel fnLabel;
    private javax.swing.JTextField lastNameTf;
    private javax.swing.JLabel lnLabel;
    private javax.swing.JComboBox seatBox;
    private javax.swing.JSeparator sp1;
    private javax.swing.JSeparator sp2;
    private javax.swing.JLabel srLabel;
    private javax.swing.JLabel titleLabel;
    private javax.swing.JTextField totalDisplay;
    private javax.swing.JLabel totalLabel;
}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class eBook
{
private static theatre th;

public static void main(String[] args)
{
 java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                th = new theatre();
th.setVisible(true);
th.addCustPanel();
            }
        });
 
}
}

[ October 16, 2006: Message edited by: Nicky Eng ]
[ October 16, 2006: Message edited by: Nicky Eng ]

[Michael Dunn]

swap these

th.setVisible(true);
th.addCustPanel();

to

th.addCustPanel();
th.setVisible(true);

[Nicky Eng]

works now.
REALLY thank you for spending time on my problem.
thanks alot.