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Tips & Tricks

 

If you click on the third button from the main window or frame then a confirm message dialog box will open with three button i.e. the “Yes”, “No” and “Cancel” like the following image:

 

enter name” on the frame. Clicking the button opens an input dialog box. If you click on the “Ok” button then a message dialog box appears containing message “Welcome: entered_text” otherwise it displays a message dialog box containing message “You pressed cancel
button.”.

Code of Program: ShowInputDialog.java

import javax.swing.*;
import java.awt.event.*;
public class ShowInputDialog{
public static void main(String[] args){
JFrame frame = new JFrame(“Input Dialog
Box Frame”);
JButton button = new JButton(“Show
Input Dialog Box to enter name”);
button.addActionListener(new
ActionListener(){
public void actionPerformed(ActionEvent
ae){
String str =
JOptionPane.showInputDialog(null, “Enter
your name: “,
“JavaJazzUp”, 1);
if(str != null)
JOptionPane.showMessageDialog(null,
“Welcome: “ + str,
“JavaJazzUp”, 1);
else
JOptionPane.showMessageDialog(null,
“You pressed cancel button.”,
“JavaJazzUp”, 1);
}
});
JPanel panel = new JPanel();
panel.add(button);
frame.add(panel);
frame.setSize(300, 300);
frame.setDefaultCloseOperation(
JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}

Jan 2008 | Java Jazz Up | 102
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