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----- Original Message -----From:
"Estes, Tammy" Date: Wednesday, October 22, 2008 11:32 amSubject: [java
programming] Question About Lab 1007 Hex to Dec Your Own Exception 2To: Free
Java Programming Online Training Course By Sang Shin > 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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