>From my e-mail app this reply was sent as an attachment??!!
I signed up directly and will give replies this way in the future.
DenS
Hi Tammy,
I think it is as easy as adding :
the class definiton NegativeValueEnteredException.
another else if intEq[] < 0
throw new NegativeValueEnteredException at the top of the 'if' list.
and another catch NegativeValueEnteredException with what you want to
do when the negative value is caught at the bottom.
Perhaps those with more Java experience can define a different way but
this should work.DenS
On Oct 22, 8:56 am, "Estes, Tammy" <[EMAIL PROTECTED]> wrote:
> Here's the code:
>
> import javax.swing.*;
>
> // This is my custom exception
> class InvalidHexException extends RuntimeException {
>
> }
>
> class HexToDec {
>
> // This method throws a custom exception called InvalidException
> static int [] convertToInt(String hex) throws InvalidHexException {
> char currChar;
> int intEq[] = new int[hex.length()];
> for (int i = 0; i < hex.length(); i++) {
> currChar = hex.charAt(i);
> if (currChar >= '0' && currChar <='9') {
> intEq[i] = currChar - '0';
> } else if (currChar >= 'a' && currChar <='f') {
> intEq[i] = currChar - 'a' + 10;
> } else if (currChar >= 'A' && currChar <='F' ) {
> intEq[i] = currChar - 'A' + 10;
> } else {
> throw new InvalidHexException();
> }
> }
> return intEq;
> }
>
> static int convertToDec(int intEq[]) {
> int result = 0;
> int mult = 1; //multiplier
> for (int j = intEq.length - 1; j >= 0; j--) {
> result += intEq[j]*mult;
> mult *= 16;
> }
> return result;
> }
>
> public static void main(String args[]) {
> String hex;
> int intEq[];
>
> // Receive hex value from a user
> hex = JOptionPane.showInputDialog(null, "Input hex: ");
> try {
>
> // convertToInt() method will throw InvalidHexExceptions if
> // the value is not in a valid format
> intEq = convertToInt(hex);
>
> Integer dec = new Integer(convertToDec(intEq));
>
> // Display the result
> JOptionPane.showMessageDialog(null, dec);
> System.exit(0);
> } catch (InvalidHexException e) {
> JOptionPane.showMessageDialog(null, "InvalidHexException is
> caught: Enter valid hex value");
> }
> System.exit(0);
> }
>
> }
>
> Here's the question:
>
> Modify HexToDec.java so that when a negative value such as -100 is
> entered, trigger a different exception called
> NegativeValueEnteredException
>
> They want us to modify this. How did you modify the lab? I'm curious
> what other people did to perfect this...
>
> Thanks,
>
> Tammy Estes
>
> Programmer Analyst
>
> DAFS/OIT
>
> Application Development and Management (ADAM)
>
> Tel: 207.624.8287
>
> Cell: 207.592.3710
>
> [EMAIL PROTECTED]
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