Incompatible Types String and Char

Question

I\'m not sure why I\'m getting this error. I think the code in general is okay although I\'m sure there is a shorter way then using all the else ifs. The problem is it says

Answer 1

    String lineOne,  R2D2 = "";

R2D2 is a string and you are comparing with a char if (R2D2== 'a'|| R2D2=='A')

try this

for (int i = word -1; i>= 0; i--) { R2D2= lineOne.charAt(i);

        if (R2D2=="a"|| R2D2=="A")
        count++;
        else if (R2D2=="e"||R2D2=="E")
        count++;
        else if (R2D2=="o"|| R2D2=="O")
        count++;
        else if (R2D2=="u"||R2D2=="U")
        count++;
        else if (R2D2=="y"||R2D2=="Y")
        count++;

}

One side not,you should compare using .equals() instead of ==