Attempting to access a local variable from a nested method. : variable scope « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. variable scope

class MainClass{
           public static void main(String [] args) {
             MainClass s = new MainClass();
             s.go();
           }
           void go() {
             int y = 5;
             go2();
             y++;        // once go2() completes, y is back in scope
           }
           void go2() {
             y++;        // won't compile, y is local to go()
           }
         }

y cannot be resolved