Cannot find symbol : class

[ajhampson]

First of all, you should post the actual code you're working on. Trying to compile what you posted, I get the following:

AddFractions.java:17: incompatible types
found   : int
required: boolean
            if(i = 1)
                 ^
AddFractions.java:19: non-static variable rTotal cannot be referenced from a static context
                System.out.println(rTotal + " + " + rToAdd + " = " + rTotal.add(rToAdd));
                                   ^
AddFractions.java:19: non-static variable rTotal cannot be referenced from a static context
                System.out.println(rTotal + " + " + rToAdd + " = " + rTotal.add(rToAdd));
                                                                     ^
AddFractions.java:23: non-static variable rTotal cannot be referenced from a static context
                System.out.println("Adding " + rToAdd + " to the previous sum of " + rTotal + " = " + rTotal.add(rToAdd));
                                                                                     ^
AddFractions.java:23: non-static variable rTotal cannot be referenced from a static context
                System.out.println("Adding " + rToAdd + " to the previous sum of " + rTotal + " = " + rTotal.add(rToAdd));
                                                                                                      ^

Your error is probably a class path issue. Your Rational class isn't on the default classpath the runtime is using. Take a look at this for some guidance.

Also note that since you never save the result of rTotal.Add() anywhere, the running total you're looking for (I think) will be lost.