Shoutbox

So I decided I'd give programming a shot.. I got stuck there.. lol..

The answer to my addition ( number 1 += number 2 ) gives me 22 when I enter 2 and 2.. anyways.. can anyone see what's wrong with this code? lol thanks

code:

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//***********************************
//Program Information
//***********************************
//Date Created : 09-09-06
//***********************************
//Goal : Simple Addition
//***********************************

import javax.swing.JOptionPane;

public class Alby2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        String number1 ;    // First Number To Add String
       
        String number2 ;    // Second Number To Add String
       
        String result ;        // Result String
       
        String show ;         // To Show Text String
       
        number1 = JOptionPane.showInputDialog ( "Enter Your First Number To Add") ;        // Reading Number 1
       
        number2 = JOptionPane.showInputDialog ( "Enter Your Second Number To Add" ) ;    // Reading Number 2
       
        result = number1 += number2 ;    // Adding Up Both Numbers
       
        show = "The Result Is " + result ;    // Text + Answer
       
        JOptionPane.showMessageDialog (null , show ) ;    // Show Text
       
    System.exit ( 0 ) ;        // End Program
       
    }

}

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strings are text, not numbers. you're adding two lines of text together, lol. use ints for += and -= to function as math operators.

quote:

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Originally posted by ShawnZ
strings are text, not numbers. you're adding two lines of text together, lol. use ints for += and -= to function as math operators.

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hum.. woops..

* albert runs in shame

result = number1 += number2 ;

should be:

result = number1 + number2 ;

tip: if you don't know what something does, don't use it.

quote:

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Originally posted by alby
Auto-generated method stub

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You're just starting Java yes? Stop using an IDE! You won't learn the language effectively while you use one.

quote:

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Originally posted by RaceProUK

quote:

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Originally posted by alby
Auto-generated method stub

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You're just starting Java yes? Stop using an IDE! You won't learn the language effectively while you use one.

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That's what my teacher at school told me to use..

Then your teacher doesn't know how to teach programming. When I first learnt Java, I was encouraged to use a text editor and the command line. Same when I started learning C and C++ properly. As a result I understand how the languages work, and can therefore use them better.

I learnt VB in an IDE, and am comparatively crap at it, despite knowing it longer.