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How to display form in a dialog window?

I have a simple form consisting of 3 text fields and a cancel/ok button. This is in a GroupLayout. I'd like to know how to make this form pop up in a new window similar to a dialog? Can I pass my GroupLayout to a JDialog? I also need to validate the input before the form window closes. I currently have this working but it uses a new frame to do so and I've read that this is not the way to do it so I am asking here.
Here is my code:
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.*;
public class AddStockPromptTest {
private JFrame frame;
private JPanel mainPanel;
private JPanel formPanel;
private JPanel buttonPanel;
//private GroupLayout layout;
private JLabel lblItem;
private JLabel lblPrice;
private JLabel lblQuantity;
private JTextField itemField;
private JTextField priceField;
private JTextField quantityField;
private JButton okBtn;
private JButton cancelBtn;
public AddStockPromptTest() {
frame = new JFrame("Add New Stock Item");
//Container contentPane = frame.getContentPane();
mainPanel = new JPanel(new BorderLayout());
buttonPanel = new JPanel(new FlowLayout());
formPanel = new JPanel();
GroupLayout groupLayout = new GroupLayout(formPanel);
formPanel.setLayout(groupLayout);
groupLayout.setAutoCreateGaps(true);
lblItem = new JLabel("Item:");
lblPrice = new JLabel("Price:");
lblQuantity = new JLabel("Quantity:");
itemField = new JTextField();
priceField = new JTextField();
quantityField = new JTextField();
groupLayout.setHorizontalGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup()
.addComponent(lblItem)
.addComponent(lblPrice)
.addComponent(lblQuantity))
.addGroup(groupLayout.createParallelGroup()
.addComponent(itemField)
.addComponent(priceField)
.addComponent(quantityField))
);
groupLayout.setVerticalGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(lblItem)
.addComponent(itemField))
.addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(lblPrice)
.addComponent(priceField))
.addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(lblQuantity)
.addComponent(quantityField))
);
cancelBtn = new JButton("Cancel");
buttonPanel.add(cancelBtn);
okBtn = new JButton("OK");
buttonPanel.add(okBtn);
mainPanel.add(formPanel, BorderLayout.CENTER);
mainPanel.add(buttonPanel, BorderLayout.SOUTH);
frame.add(mainPanel);
frame.setTitle("Basil's Pizza Ordering System");
frame.setSize(800, 600);
frame.pack();
frame.setVisible(true);
//addStockPrompt();
}
private void addStockPrompt() {
}
}

JOptionPane will give you a dialog box. Use this in actionperformed event of your okay button.
JOptionPane.showMessageDialog(null, message);

Java GUI JScrollBar How to set the length?

I have the following GUI codded up but I would like to increase the length of the scroll bar on the right side.
Any Idea How to do this?
// test class that implements the gui stuff.
public class testing
{
//variables
private JFrame f = new JFrame("GUI TEST");
private JPanel p = new JPanel();
private JPanel p2 = new JPanel();
private JPanel p3 = new JPanel();
private JPanel p4 = new JPanel();
private JPanel p5 = new JPanel();
private JPanel p6 = new JPanel();
private JPanel p7 = new JPanel();
private JPanel p8 = new JPanel();
private JPanel p9 = new JPanel();
private JPanel p10 = new JPanel();
private JPanel p11 = new JPanel();
private JButton b1 = new JButton("Button");
private JTextField tf1 = new JTextField(" ");
private JTextField tf2 = new JTextField(" ");
private JTextField tf3 = new JTextField(" ");
private JTextArea ta1 = new JTextArea(10,45);
private JLabel label1 = new JLabel("Label 1");
private JLabel label2 = new JLabel("Label 2");
private JLabel label3 = new JLabel("Label 3");
private JLabel label4 = new JLabel("Label 4");
private JScrollBar sb1 = new JScrollBar();
//class constructor
public testing()
{
gui();
}
public void gui()
{
//change length of scroll bar
f.setVisible(true);
f.setSize(600,300);
p.add(label1);
p.add(tf1);
p2.add(label2);
p2.add(tf2);
p3.add(label3);
p3.add(tf3);
p4.add(sb1);
p4.add(label4);
p5.add(ta1);
p6.add(b1);
p4.setBackground(Color.GRAY);
p9.setBackground(Color.GRAY);
p10.setBackground(Color.GRAY);
p11.setBackground(Color.GRAY);
p9.add(p);
p9.add(p2);
p9.add(p3);
p10.add(p5);
p11.add(p6);
//adds panels to frames
f.add(p4, BorderLayout.EAST);
f.add(p9, BorderLayout.NORTH);
f.add(p10, BorderLayout.CENTER);
f.add(p11, BorderLayout.PAGE_END);
}
public static void main(String[] args)
{
new testing();
}

Ordinarilly, you'd simply add your JTextArea to a JScrollPane, which handles the resizing behavior for you.
f.add(new JScrollPane(ta1), BorderLayout.CENTER);
For demonstration purposes, you can override the getPreferredSize() method of the JScrollBar to see the effect.
private JScrollBar sb1 = new JScrollBar(){
#Override
public Dimension getPreferredSize() {
return new Dimension(
super.getPreferredSize().width, ta1.getPreferredSize().height);
}
};
In addition,
Swing GUI objects should be constructed and manipulated only on the event dispatch thread.
Use the appropriate constructor to establish the desired initial size of text components.
Use an appropriate layout to get the desired resizing behavior.
As tested:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class Testing {
//variables
private JFrame f = new JFrame("GUI TEST");
private JPanel p = new JPanel();
private JPanel p2 = new JPanel();
private JPanel p3 = new JPanel();
private JPanel p4 = new JPanel();
private JPanel p5 = new JPanel();
private JPanel p6 = new JPanel();
private JPanel p9 = new JPanel();
private JPanel p10 = new JPanel();
private JPanel p11 = new JPanel();
private JButton b1 = new JButton("Button");
private JTextField tf1 = new JTextField(12);
private JTextField tf2 = new JTextField(12);
private JTextField tf3 = new JTextField(12);
private JTextArea ta1 = new JTextArea(10, 45);
private JLabel label1 = new JLabel("Label 1");
private JLabel label2 = new JLabel("Label 2");
private JLabel label3 = new JLabel("Label 3");
private JLabel label4 = new JLabel("Label 4");
private JScrollBar sb1 = new JScrollBar(){
#Override
public Dimension getPreferredSize() {
return new Dimension(super.getPreferredSize().width, ta1.getPreferredSize().height);
}
};
//class constructor
public Testing() {
gui();
}
public void gui() {
p.add(label1);
p.add(tf1);
p2.add(label2);
p2.add(tf2);
p3.add(label3);
p3.add(tf3);
p4.add(sb1);
p4.add(label4);
p5.add(ta1);
p6.add(b1);
p4.setBackground(Color.GRAY);
p9.setBackground(Color.GRAY);
p10.setBackground(Color.GRAY);
p11.setBackground(Color.GRAY);
p9.add(p);
p9.add(p2);
p9.add(p3);
p10.add(p5);
p11.add(p6);
//adds panels to frames
f.add(p4, BorderLayout.EAST);
f.add(p9, BorderLayout.NORTH);
f.add(p10, BorderLayout.CENTER);
f.add(p11, BorderLayout.PAGE_END);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
new Testing();
});
}
}

Setting the size of JPanel that contains JRadioButton

I have some problem , i want my jpanel to look like this
but after codING i had this view and i didnt find the solution ,
i need some helps please.
i put the radio button inside jScrollPan
//listmateriel is a list (vector) of radio button ----------
//imagebox is jpanel contains jradio buttons and the image ---------
//gridlayoutPanel2 is Jpanel contains the two text fields and jlabel and a JComboBox
package tpjava;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Image;
import java.awt.event.ActionEvent;
i.......
public class Frame extends JFrame implements ActionListener {
private static final int Haut = 550;
private static final int Larg = 720;
private final JPanel utilisateur;
private final JButton recherche;
private final JRadioButton radioButton,radioButton2;
private Vector listmateriel;
private final JLabel label;
public Frame()
{
super("Gestion des materiels");
setSize(Larg,Haut);
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTabbedPane menu = new JTabbedPane();
JPanel emprunt = new JPanel();
emprunt.setPreferredSize(new Dimension(Larg, Haut ));
emprunt.setLayout(new BoxLayout(emprunt, BoxLayout.Y_AXIS));
emprunt.setBorder(BorderFactory.createEmptyBorder(20,20, 20, 20));
JPanel emp1 = new JPanel();
emp1.setPreferredSize(new Dimension(Larg-40, 200 ));
emp1.setLayout(new BorderLayout());
JLabel title2 = new JLabel("Nouvel emprunt:");
title2.setBorder(BorderFactory.createEmptyBorder(20,20,0,0));
JPanel box2 = new JPanel();
box2.setPreferredSize(new Dimension(Larg, 40 ));
box2.setLayout(new BoxLayout(box2, BoxLayout.X_AXIS));
box2.add(title2);
box2.add(Box.createHorizontalStrut(650));
emprunt.add(box2);
JLabel label3 = new JLabel("test");
JButton dispo = new JButton("Disponibilité");
dispo.addActionListener((ActionListener) this);
dispo.setPreferredSize(new Dimension(200, 30));
JPanel box1 = new JPanel();
box1.setLayout(new BoxLayout(box1, BoxLayout.X_AXIS));
box1.add(dispo);
box1.add(Box.createHorizontalStrut(450));
box1.add(label3);
emp1.add(box1,BorderLayout.SOUTH);
listmateriel = new Vector();
for(int k =0 ;k <10 ; k++)
listmateriel .add(new JRadioButton(res.getString("nom"+k)));
......
ImageIcon newIcon = new ImageIcon(bi);
JLabel picture = new JLabel(newIcon);
picture.setBorder(BorderFactory.createEmptyBorder(0,450,0,0));
JPanel jplRadio = new JPanel();
jplRadio.setLayout(new GridLayout(0, 1));
for(int i = 0 ; i < listmateriel.size() ;i++)
{
jplRadio.add((Component) listmateriel.elementAt(i));
}
JPanel imagebox = new JPanel();
imagebox.setLayout(new BorderLayout());
JScrollPane scroll3 = new JScrollPane(jplRadio);
scroll3.setPreferredSize(new Dimension(200, 30));
imagebox.add(scroll3, BorderLayout.WEST);
imagebox.add(picture, BorderLayout.CENTER);
emp1.add(imagebox,BorderLayout.CENTER);
JPanel box3 = new JPanel();
box3.setLayout(new BoxLayout(box3, BoxLayout.X_AXIS));
JLabel title3 = new JLabel("Remplir les champs suivants:");
box3.add(title3);
box3.add(Box.createHorizontalStrut(650));
JPanel gridlayoutPanel2 = new JPanel();
........
JPanel util5 = new JPanel();
util5.setLayout(new GridLayout(0,1));
util5.setBorder(BorderFactory.createLineBorder(Color.black));
JLabel resul2 = new JLabel("bsfgbsdg");
JScrollPane scroll2 = new JScrollPane();
util5.add(resul2);
emprunt.add(emp1);
emprunt.add(box3);
emprunt.add(gridlayoutPanel2);
emprunt.add(util5);
menu.add("emprunts",emprunt);
//---------------------
getContentPane().add(menu);
pack();
setVisible(true);
}
}

GridLayout(0, 1) instead of BoxLayout is the solution thank you #trashgod

can't get a simple layout in java

I am trying to make an GUI in java ,this is my first venture with GUI in java and I am trying to learn
Above is what I trying to create.But I simple can't get to design it in that way ,here is my code:
//Frame:
JFrame frame;
//Menu :
JMenuBar menuBar;
JMenu menu1,menu2;
JMenuItem menuItem;
//Panels:
JPanel topPanel;
JPanel centerPanel;
JPanel bpttomPanel;
String[] vTypeStrings = { "Select vehicle","Car", "Boat", "Truck", };
//Labels:
JLabel typeLabel;
//ComboBoxes:
JComboBox vList;;
//Frame creation
frame= new JFrame("frame1");
frame.setSize(450,250);
frame.setLocation(200,300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridLayout(3,1));
//Create the menu bar.
menuBar = new JMenuBar();
//Create menu bar items
menu1 = new JMenu("File");
menu1.setMnemonic('F');
menuBar.add(menu1);
menu2 = new JMenu("Help");
menu2.setMnemonic('H');
menuBar.add(menu2);
//Adding items to each menu
menuItem = new JMenuItem("Load", 'L');
menu1.add(menuItem);
menuItem = new JMenuItem("Exit", 'X');
menu1.add(menuItem);
//Second menu
menuItem = new JMenuItem("About",'A');
menu2.add(menuItem);
//Adding menu to frame
frame.setJMenuBar(menuBar);
//Top Panel
topPanel = new JPanel(new FlowLayout());
frame.add(topPanel,BorderLayout.NORTH);
JLabel headLabel=new JLabel("Snedden's Ordering system");//Heading label
topPanel.add(headLabel);
headLabel.setFont(new Font("Serif", Font.PLAIN, 24));
headLabel.setForeground(new Color(0xff0000));
//Center Panel
centerPanel = new JPanel();
centerPanel.setLayout(new GridLayout(2,2,2,2));
vList = new JComboBox(vTypeStrings);
vList.setSelectedIndex(0);
typeLabel=new JLabel("Vehicle Type");
typeLabel.setLabelFor(vList);
centerPanel.add(typeLabel);
centerPanel.add(vList);
frame.add(centerPanel,BorderLayout.CENTER);
frame.setVisible(true);
Here is what I get
THing is I get the label and the field on the same line, don't understand why,please help thanks.

frame.setLayout(new GridLayout(3,1));
This is your first mistake. The cells of a GridLayout are all the same size, while you want the central part to be higher.
frame.add(topPanel,BorderLayout.NORTH);
....
frame.add(centerPanel,BorderLayout.CENTER);
This is the second one, you set frame to have a GridLayout, so you shouldn't use BorderLayout constraints.
The correct thing to do, in my opinion, is to remove the first line, and leave the frame with the default border layout.
As for your issue with the grid, it's due to the fact that you're not filling the grid.
If you insert 4 controls in the grid, or initialize the grid with (1,2), you will get the expected outcome.
This is with centerPanel.setLayout(new GridLayout(1,2));:
And this is with `
centerPanel.add(typeLabel);
centerPanel.add(vList);
centerPanel.add(new JLabel());
centerPanel.add(new JLabel());

What about this:
import javax.swing.*;
import java.awt.*;
public class Gui extends JFrame {
public Gui()
{
super("Gui");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
setLocationRelativeTo(null);
setVisible(true);
add(new Form(), BorderLayout.EAST);
add(new ButtonRow(), BorderLayout.SOUTH);
}
private class ButtonRow extends JPanel {
private JButton button1;
private JButton button2;
private JButton button3;
private JButton button4;
public ButtonRow()
{
setLayout(new FlowLayout());
button1 = new JButton("button 1");
button2 = new JButton("button 2");
button3 = new JButton("button 3");
button4 = new JButton("button 4");
add(button1);
add(button2);
add(button3);
add(button4);
}
}
public static void main(String args[])
{
new Gui();
}
private class Form extends JPanel {
String[] vTypeStrings = { "Select vehicle","Car", "Boat", "Truck", };
public Form()
{
setLayout(new VerticalLayout());
JComboBox vList = new JComboBox(vTypeStrings);
add(new Control("choose", vList));
add(new Control("label 1"));
add(new Control("label 2"));
add(new Control("label 3"));
add(new Control("label 4"));
}
}
private class Control extends JPanel {
private JLabel label;
private JTextField text;
public Control(String lbl)
{
label = new JLabel(lbl);
text = new JTextField(15);
setLayout(new FlowLayout());
add(label);
add(text);
}
public Control(String lbl, JComboBox list)
{
label = new JLabel(lbl);
setLayout(new FlowLayout());
add(label);
add(list);
}
}
}
I think you get the idea.
NOTE: I've used this VerticalLayout class.

Not good answers I see from others, now this one is good. Just type:
JPanel panel = new JPanel();
panel.setLayout(null);
And set the LOCATIONS and SIZES to the objects on the JPANEL and you can place them anywhere.

Content in JPanel won't appear

There is no errors but when I Run it the content that I added into the JPanel won't appear, only the one not inside the JPanel appear.
import javax.swing.*;
import java.awt.*;
public class SimpleGUI extends JFrame
{
public static void main(String arg[])
{
SimpleGUI f = new SimpleGUI("GUI components");
f.setSize(600,200);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
SimpleGUI(String s)
{
setTitle(s);
setLayout(new GridLayout(3,2));
JLabel msg = new JLabel("FINAL EXAM IS JUST AROUND THE CORNER!");
JButton bt = new JButton("OK");
JLabel lb = new JLabel ("Enter your name:");
JTextField tf = new JTextField("<type name here>");
JLabel lb2 = new JLabel ("Enter age:");
JTextField tf2= new JTextField(10);
tf2.setHorizontalAlignment(JTextField.RIGHT);
JCheckBox cb = new JCheckBox("Bold",true);
JRadioButton rb1 = new JRadioButton("Red");
JTextArea ta = new JTextArea(5,20);
JList list = new JList(new Object[] {"Block A", "Block B"});
JComboBox jcb = new JComboBox(new Object[] {"Hello", "Bye"});
ImageIcon ic = new ImageIcon("music.gif");
JButton newbt = new JButton("Play",ic);
newbt.setVerticalTextPosition(JButton.TOP);
newbt.setHorizontalTextPosition(JButton.CENTER);
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
p1.add(lb, BorderLayout.WEST);
p1.add(tf, BorderLayout.CENTER);
p1.add(cb, BorderLayout.EAST);
JPanel p2 = new JPanel();
p2.setLayout(new BorderLayout());
p2.add(lb2, BorderLayout.WEST);
p2.add(tf2, BorderLayout.CENTER);
p2.add(rb1, BorderLayout.EAST);
JPanel p3 = new JPanel();
p3.setLayout(new BorderLayout());
p3.add(jcb);
add(ta);
add(list);
p3.add(newbt, BorderLayout.NORTH);
add(msg);
p3.add(bt, BorderLayout.SOUTH);
}
}

I've updated your code. Have a look at this version:
import javax.swing.*;
import java.awt.*;
public class SimpleGUI extends JFrame {
public static void main(String arg[]) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
SimpleGUI f = new SimpleGUI("GUI components");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
});
}
public SimpleGUI(String s) {
setTitle(s);
setLayout(new GridLayout(3, 2));
JLabel msg = new JLabel("FINAL EXAM IS JUST AROUND THE CORNER!");
JButton bt = new JButton("OK");
JLabel lb = new JLabel("Enter your name:");
JTextField tf = new JTextField("<type name here>");
JLabel lb2 = new JLabel("Enter age:");
JTextField tf2 = new JTextField(10);
tf2.setHorizontalAlignment(JTextField.RIGHT);
JCheckBox cb = new JCheckBox("Bold", true);
JRadioButton rb1 = new JRadioButton("Red");
JTextArea ta = new JTextArea(5, 20);
JList list = new JList(new Object[]{"Block A", "Block B"});
JComboBox jcb = new JComboBox(new Object[]{"Hello", "Bye"});
ImageIcon ic = new ImageIcon("music.gif");
JButton newbt = new JButton("Play", ic);
newbt.setVerticalTextPosition(JButton.TOP);
newbt.setHorizontalTextPosition(JButton.CENTER);
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
p1.add(lb, BorderLayout.WEST);
p1.add(tf, BorderLayout.CENTER);
p1.add(cb, BorderLayout.EAST);
JPanel p2 = new JPanel();
p2.setLayout(new BorderLayout());
p2.add(lb2, BorderLayout.WEST);
p2.add(tf2, BorderLayout.CENTER);
p2.add(rb1, BorderLayout.EAST);
JPanel p3 = new JPanel();
p3.setLayout(new BorderLayout());
p3.add(jcb);
add(ta);
add(list);
p3.add(newbt, BorderLayout.NORTH);
add(msg);
p3.add(bt, BorderLayout.SOUTH);
/**
* Need to add the following lines
*/
this.add(p1);
this.add(p2);
this.add(p3);
this.pack();
this.setVisible(true);
}
}
A couple of pointers:
You need to add your components to your JFrame for them to actually show up.
Any updates to the user interface must happen on the event dispatch thread. Consequently you would notice that I've added a SwingUtilites.invokeLater() to the main. Have a look at this article to understand "Threading with Swing"

Where you you add your panels to the frame? Also, forgotten my java "rules and regulations": do you need to call "super()"?