expressions - a value or operation that computes a value

modulus / "mod" / % - remainder

(highest precedence)

Parethesis
Divide / Multiply / Mod
Addition / Subtraction

(lowest precedence)



primitive types -

int - integer (how many?)
double - real (how much?)

"promotion" - when used in an expression with a double, an int gets "promoted" to a double



String concatenation -

When using a "+" between a String and another type, that type gets "concatenated" or "stuck onto" that String.