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Thread: Calculating Price with Command Line - Please Help!

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    Default Calculating Price with Command Line - Please Help!

    I'm trying to write a fairly simple program to calculate the price of some items. Basically, someone could type these items into the command line and it would be able to add them up and output the total. I seem to be going in circles and can't figure out this command line stuff/interacting with loops and so forth. I'm really buggard, so if someone could give me a hand I would really appreciate it.



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    Default Re: Calculating Price with Command Line - Please Help!

    Show what you have so far, what your problems are, what exceptions are being thrown etc then we can progress from there.
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

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    Default Re: Calculating Price with Command Line - Please Help!

    public static void main(String[] args) {
    Store one = new Store();

    try {

    }
    catch(ArrayIndexOutOfBoundsException e){
    System.out.println("Error. You must enter command line");
    System.out.println(e.getMessage());
    }
    catch (NumberFormatException e){
    System.out.println("Error. First argument must be an integer");
    }
    finally {
    System.out.println("Program has ended");
    }


    public class Store {

    private String price;
    private String time;

    public void calculatePrice(String[] args){


    int [] prices = new int[]{5, 15, 20};

    int service a = 20;
    int service b = 15;
    int service c = 5;

    for(int i=0; i < prices.length ; i++)
    price = price + prices[i];
    }

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    Default Re: Calculating Price with Command Line - Please Help!

    Next time you post, please use code tags around your code, such as ones in my signature.
    For now Ill repost your code in a readable form.
    public class Store {
     
        private String price;
        private String time;
     
        public void calculatePrice(String[] args) {
            int[] prices = new int[]{5, 15, 20};
     
            int service a = 20;
            int service b = 15;
            int service c = 5;
     
            for (int i = 0; i < prices.length; i++) {
                price = price + prices[i];
            }
        }
     
        public static void main(String[] args) {
            Store one = new Store();
     
            try {
            } catch (ArrayIndexOutOfBoundsException e) {
                System.out.println("Error. You must enter command line");
                System.out.println(e.getMessage());
            } catch (NumberFormatException e) {
                System.out.println("Error. First argument must be an integer");
            } finally {
                System.out.println("Program has ended");
            }
        }
    }

    Ok, to start off... int service a = 20; is wrong as service a is the identifier of your variable and having a space between service and a is illegal.
    An example of a legal identifer would be serviceA.

    To read user input from the console, you should take a look at the Scanner class.
    Scanner (Java 2 Platform SE 5.0)
    For a neat little guide on how to use Scanner, take a look at this
    How-To-Guide
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

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