Error in my Lab2A, Can you help?

Question

//Scott Wheelock
//CSCI-111L-D02
//09-24-2002
//Oliver Wallock
//D02
//Lab 2A
//[email protected]
//Today we will write an application that inputs three integers from the user
//and displays the sum, average, product, smallest and largest of the numbers
//in an information message dialog box.
//Java extensions packages
import javax.swing.JOptionPane;     //Import class JOptionPane
public class Lab2A {
     //Main method begins execution of Java application.
     public static void main ( String args[] )
          String firstNumber;     //First string entered by user.
          String secondNumber;     //Second string entered by user.
          String thirdNumber;     //Third string entered by user.
          int number1;          //First number in funstion.
          int number2;          //Second number in funstion.
          int number3;          //Third number in funstion.
          int sum;          //Sum of number1, 2, & 3.
          int average;          //Average of number1,2,3.
          int product;          //Product of number1,2,3.
          //Read in first number from the user as a String.
          firstNumber =
               JOptionPane.showInputDialog ( "Enter first integer" );
          //Read in second number from the user as a String.
          secondNumber =
               JOptionPane.showInputDialog ( "Enter second integer" );
          //Read in third number from the user as a String.
          thirdNumber =
               JOptionPane.showInputDialog ( "Enter third integer" );
          //Convert numbers from type String to type int
          number1 = Integer.parseInt ( firstNumber );
          number2 = Integer.parseInt ( secondNumber );
          number3 = Integer.parseInt ( thirdNumber );
          //Sum the numbers.
          sum = number1 + number2 + number3;
          //Average the numbers.
          average = ( number1 + number2 + number3 )/3;
          //Multiply the numbers.
          product = number1 * number2 * number3;
          //Display the results.
          JOptionPane.showMessageDialog ( null, "The sum is " + sum, "The average is " + average,
"The product is " + product, "Results",
JOptionPane.INFORMATION_MESSAGE );
               System.exit ( 0 );     //Terminate application.
          }                    //Ends method main.
}                              //Ends class Lab2A.

Answer 1

The problem lies in the way you try to use showMessageDialog(). Check the specification more closely, and make sure your message is in a single string, the title in another single string and so on..
Regards,
Cyric