Raghu Nair: Java,JavaFX Tips

Here is a tip on traversing back and forward on a sequence if you know the current object.

public function next(locations:String[],location:String ):String {            
                var index = Sequences.indexOf(locations,location);
                if ( index >= (sizeof locations - 1)){
                    index = 0;
                }else index ++;
                return locations[index];  
}

public function prev(locations:String[],location:String ):String {            
                var index = Sequences.indexOf(locations,location);
                if ( index <= 0){
                    index = sizeof locations - 1;
                }else index --;
                return locations[index];  
}