The left-hand side of an assignment must be a variable

Question

Why doesn\'t this work?

private List xShot = new ArrayList();
     ...codes
     ...codes
     ...codes
     ...codes
     xSho         


        

Answer 1

Although xShot.get(0) is a number, it is not a variable. You need to provide a variable for this to work. That said

int i = xShot.get(0);
i += 5;

Will not work. i will be incremented by 5, but xShot's object in location 5 is not the same object. You need to get, modify, and set the variable.

For example:

xShot.set(0, xShot.get(0) + 5);