Ok so I'm making a fraction program for class, but I can't seem to make the program accept a whole number because im finding fract.indexOf ('/'); for the actual fractions so i can work around the "/" and get the numerator and denominator. But because of that, if i enter a whole number, I get a
| CODE: |
java.lang.StringIndexOutOfBoundsException: String index out of range: -1 |
error.
Note I am reading the fractions as a String
Heres the read function in my class:
| CODE: |
public void read (String fract)
{ pos = fract.indexOf ('/'); numerS = fract.substring (0, pos); denomS = fract.substring (pos + 1); boolean check = false; while (!check) { try { numer = Integer.parseInt (numerS); denom = Integer.parseInt (denomS); check = true; } catch (NumberFormatException x) { //System.out.print ("Invalid Input, try again"); read (fract); } } } |
Can someone tell me what to add?
Also, how do I force the user to enter another number if it catches the exception. I am doing a GUI and this Fraction class is separate from my GUI class.