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Thread: Using CharAt statement

  1. #1
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    Default Using CharAt statement

    import java.util.Scanner;
    import java.text.DecimalFormat;
     
    public class Proj3
    {
     
    	public static void main(String[] args)
    	{
    		Scanner kb = new Scanner(System.in);
    		String strCustomerName;
    		String strPhoneNumber;
    		String strShippingCode;
    		String strTaxCode;
    		char cShippingCode;
    		char cTaxCode;
     
     
    		int iDiscountCode;
    		int iNumberOfGadgets;
    		int iNumberOfWidgets;
     
    		DecimalFormat df1 = new DecimalFormat("###-####");
    		CustomerOrder order1 = new CustomerOrder();
     
    		System.out.print("What is the name of your customer? Must be four letters long, if it is not four letters long please add X's to the end to correct this");
    		strCustomerName = kb.nextLine();
    		order1.setCustomerName(strCustomerName);
     
    		System.out.print("What is the phone number of the customer? Please input in the format ###-####:");
    		strPhoneNumber = kb.nextLine();
    		order1.setPhoneNum(strPhoneNumber);
     
    		System.out.print("How many gadgets does your customer want to order?");
    		iNumberOfGadgets = kb.nextInt();
    		order1.setNumGadgets(iNumberOfGadgets);
     
    		System.out.print("How many widgets does your customer want to order?");
    		iNumberOfWidgets = kb.nextInt();
    		order1.setNumWidgets(iNumberOfWidgets);
     
    		System.out.print("What shipping option would your customer prefer?");
    		System.out.println("For overnight shipping: O or o. For priority shipping: P or p. For standard shipping, s or S.");
    		strShippingCode = kb.nextLine();
    		cShippingCode = strShippingCode.charAt(0);
    		order1.setShippingCode(cShippingCode);
     
     
    		System.out.print("Which tax code would your customer prefer?");
    		System.out.println("For non taxable: N or n. For taxable: T or t.");
    		strTaxCode = kb.nextLine();
    		cTaxCode = strTaxCode.charAt(0);
    		order1.setTaxCode(cTaxCode);
     
    		System.out.print("Which discount code would your customer prefer?");
    		System.out.println("For no discount: 0. For loyalty discount: 1. For employee discount: 2.");
    		iDiscountCode = kb.nextInt();
    		order1.setDiscountCode(iDiscountCode);
     
     
     
     
     
     
    	}//end of main
    }//end of Proj3

    In class, we are calling private methods from a class. The shipping and tax codes have to be set to a character. I would appreciate help on how to convert a string to a character. Foe example, when asked which tax code the customer would prefer, if they choose N or n it would give non taxable, if they choose T or t, it would give taxable, otherwise it would give taxable. However, when it gets to line 44, where you have to input the shipping code, it crashes with the error "String index out of range: 0". Any help would be appreciate, thanks again.


  2. #2
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    Default Re: Using CharAt statement

    First you cannot covert a String to a char. The charAt() method takes a parameter that is the index of the character within the String and returns that
    character so if it is out of range that means the index is out of ranges of the indexes of that String. Example: can the index of n is 2. If can is the literal for a String named str if you tried str.charAt(3) you would get the same error because 3 is out of range. Also there are no line numbers you say line 44. You should include line numbers or segregate the code.

    Hope it helps

  3. #3
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    Default Re: Using CharAt statement

    However, when it gets to line 44, where you have to input the shipping code, it crashes with the error "String index out of range: 0".
    What do you input?
    Remember shipping code is of type char, that restricts it to only get character.

    Also there are no line numbers you say line 44. You should include line numbers or segregate the code.
    Hopefully (S)he is talking about his/her editor lines of code.

  4. #4
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    Default Re: Using CharAt statement

    So, um, what command should I use to store the entered information into order1.setShippingCode?

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    Default Re: Using CharAt statement

    What do you expect a character variable to store in it?

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