How to make Dialog in a Java Program using JOptionPane?
Introduction
JOptionPane is used for the dialog box that prompts users for a value or informs them in a Java program. Most of the methods in the JOptionPane are of showXXDialog
For example:
showInputDialog -> To prompt user for some input.
showMessageDialog-> To tell the user about something.
More information: https://docs.oracle.com/javase/8/docs/api/javax/swing/JOptionPane.html
Code Listing
import javax.swing.JOptionPane;
public class DialogDemo {
//***** Main method *****//
public static void main(String[] args) {
String message="Hello World";
JOptionPane.showMessageDialog(null,message);
}
}
Taking input
A simple program to take input from the user:
import javax.swing.JOptionPane;
public class DialogDemo {
//***** Main method *****//
public static void main(String[] args) {
String input = ""; //blank
input= JOptionPane.showInputDialog(null);
System.out.println("You entered = "+ input);
}
}
