Thread: 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.

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