I'm very new to Java 4 1/2 weeks into my intro to java, I have to write a program that asks user for an integer, the program will then add up all integers from 1 to N and display output message the sum of integers from 1 through (integer input from user) is (this would be the sum)

here is what I have, and I'm not sure what I am doing wrong.

```
import javax.swing.JOptionPane;
// declare class
public class CalculateIntSum
{
// main method
public static void main( String[] args )
{
// declare and initialize variables
String numberStr, openingMessage, output;
double number, total = 0;
int i = 0, N = 0, count = 1;
//opening message
openingMessage = "This program will add positive integers from 1 to N.\n"
+ " N being the integer the user inputs.";
JOptionPane.showMessageDialog( null, openingMessage);
while ( i <= N )
{
numberStr = JOptionPane.showInputDialog( "Enter a number: " ); //user enters a value
number = Double.parseDouble( numberStr );
total += number + count; // accumulate number to total
i++; // increment counter variable by 1
}
//output message to user
output = "The sum of the integers from 1 to" + numberStr "is" + total;
JOptionPane.showMessageDialog( null, output);
System.exit(0); // terminate the GUI thread
} // end main
} // end class
```