Introduction
Dialog class control represents a top-level window with a title and a border used to take some form of input from the user.
Class declaration
Following is the declaration for java.awt.Dialog class:
public class Dialog extends Window
Field
Following are the fields for java.awt.Image class:
- static Dialog.ModalityType DEFAULT_MODALITY_TYPE — Default modality type for modal dialogs.
Class constructors
S.N. | Constructor & Description |
---|---|
1 | Dialog(Dialog owner)Constructs an initially invisible, modeless Dialog with the specified owner Dialog and an empty title. |
2 | Dialog(Dialog owner, String title)Constructs an initially invisible, modeless Dialog with the specified owner Dialog and title. |
3 | Dialog(Dialog owner, String title, boolean modal)Constructs an initially invisible Dialog with the specified owner Dialog, title, and modality. |
4 | Dialog(Dialog owner, String title, boolean modal, GraphicsConfiguration gc)Constructs an initially invisible Dialog with the specified owner Dialog, title, modality and GraphicsConfiguration. |
5 | Dialog(Frame owner)Constructs an initially invisible, modeless Dialog with the specified owner Frame and an empty title. |
6 | Dialog(Frame owner, boolean modal)Constructs an initially invisible Dialog with the specified owner Frame and modality and an empty title. |
7 | Dialog(Frame owner, String title)Constructs an initially invisible, modeless Dialog with the specified owner Frame and title. |
8 | Dialog(Frame owner, String title, boolean modal)Constructs an initially invisible Dialog with the specified owner Frame, title and modality. |
9 | Dialog(Frame owner, String title, boolean modal, GraphicsConfiguration gc)Constructs an initially invisible Dialog with the specified owner Frame, title, modality, and GraphicsConfiguration. |
10 | Dialog(Window owner)Constructs an initially invisible, modeless Dialog with the specified owner Window and an empty title. |
11 | Dialog(Window owner, Dialog.ModalityType modalityType)Constructs an initially invisible Dialog with the specified owner Window and modality and an empty title. |
12 | Dialog(Window owner, String title)Constructs an initially invisible, modeless Dialog with the specified owner Window and title. |
13 | Dialog(Window owner, String title, Dialog.ModalityType modalityType)Constructs an initially invisible Dialog with the specified owner Window, title and modality. |
14 | Dialog(Window owner, String title, Dialog.ModalityType modalityType, GraphicsConfiguration gc)Constructs an initially invisible Dialog with the specified owner Window, title, modality and GraphicsConfiguration |
Class methods
S.N. | Method & Description |
---|---|
1 | void addNotify()Makes this Dialog displayable by connecting it to a native screen resource. |
2 | AccessibleContext getAccessibleContext()Gets the AccessibleContext associated with this Dialog. |
3 | Dialog.ModalityType getModalityType()Returns the modality type of this dialog. |
4 | String getTitle()Gets the title of the dialog. |
5 | void hide()Deprecated. As of JDK version 1.5, replaced by setVisible(boolean). |
6 | boolean isModal()Indicates whether the dialog is modal. |
7 | boolean isResizable()Indicates whether this dialog is resizable by the user. |
8 | boolean isUndecorated()Indicates whether this dialog is undecorated. |
9 | protected String paramString()Returns a string representing the state of this dialog. |
10 | void setModal(boolean modal)Specifies whether this dialog should be modal. |
11 | void setModalityType(Dialog.ModalityType type)Sets the modality type for this dialog. |
12 | void setResizable(boolean resizable)Sets whether this dialog is resizable by the user. |
13 | void setTitle(String title)Sets the title of the Dialog. |
14 | void setUndecorated(boolean undecorated)Disables or enables decorations for this dialog. |
15 | void setVisible(boolean b)Shows or hides this Dialog depending on the value of parameter b. |
16 | void show()Deprecated. As of JDK version 1.5, replaced by setVisible(boolean). |
17 | void toBack()If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window. |
Methods inherited
This class inherits methods from the following classes:
- java.awt.Window
- java.awt.Component
- java.lang.Object
Dialog Example
Create the following java program using any editor of your choice in say D:/ > AWT > com > adglob> gui >AwtControlDemo.java
package com.adglob.gui; import java.awt.*; import java.awt.event.*; public class AwtControlDemo { private Frame mainFrame; private Label headerLabel; private Label statusLabel; private Panel controlPanel; public AwtControlDemo(){ prepareGUI(); } public static void main(String[] args){ AwtControlDemo awtControlDemo = new AwtControlDemo(); awtControlDemo.showDialogDemo(); } private void prepareGUI(){ mainFrame = new Frame("Java AWT Examples"); mainFrame.setSize(400,400); mainFrame.setLayout(new GridLayout(3, 1)); mainFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ System.exit(0); } }); headerLabel = new Label(); headerLabel.setAlignment(Label.CENTER); statusLabel = new Label(); statusLabel.setAlignment(Label.CENTER); statusLabel.setSize(350,100); controlPanel = new Panel(); controlPanel.setLayout(new FlowLayout()); mainFrame.add(headerLabel); mainFrame.add(controlPanel); mainFrame.add(statusLabel); mainFrame.setVisible(true); } private void showDialogDemo(){ headerLabel.setText("Control in action: Dialog"); Button showAboutDialogButton = new Button("Show About Dialog"); showAboutDialogButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { AboutDialog aboutDialog = new AboutDialog(mainFrame); aboutDialog.setVisible(true); } }); controlPanel.add(showAboutDialogButton); mainFrame.setVisible(true); } class AboutDialog extends Dialog { public AboutDialog(Frame parent){ super(parent, true); setBackground(Color.gray); setLayout(new BorderLayout()); Panel panel = new Panel(); panel.add(new Button("Close")); add("South", panel); setSize(200,200); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ dispose(); } }); } public boolean action(Event evt, Object arg){ if(arg.equals("Close")){ dispose(); return true; } return false; } public void paint(Graphics g){ g.setColor(Color.white); g.drawString("adglob.Com", 25,70 ); g.drawString("Version 1.0", 60, 90); } } }
Compile the program using command prompt. Go to D:/ > AWT and type the following command.
D:\AWT>javac com\adglob\gui\AwtControlDemo.java
If no error comes that means compilation is successful. Run the program using following command.
D:\AWT>java com.adglob.gui.AwtControlDemo
Verify the following output
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