BELAJAR BERSAMA

import javax.swing.JOptionPane;
 
public class DialogBox
{
public static void main(String[] args) //throws IOException
{
String name;
String str;
int num1 = 45;
int num2 = 56;
int sum;
 
name = JOptionPane.showInputDialog("Enter your name and press OK");
 
JOptionPane.showMessageDialog(null, "Hello World!", "Greetings",
JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null, "Amount Due = $" + 500.45,
"Invoice", JOptionPane.PLAIN_MESSAGE);
 
str = "The two numbers are: " + num1 + " and " + num2 + "\n";
sum = num1 + num2;
 
str = str + "The sum of the numbers is: " + sum + "\n";
str = str + "That is all for now!";
 
JOptionPane.showMessageDialog(null, str, "Summing Numbers",
JOptionPane.ERROR_MESSAGE);
System.exit(0);
}
}