APCSA 1.1-1.6

What are int, double, and boolean?

int = whole numbers, double = decimal numbers, boolean = true or false

What is the difference between "int x;" and "x = 5;"?

"int x;" creates the variable name/type. "x = 5;" puts the value inside it.

What does % (modulus) do?

It finds the remainder of division (like 5 % 2 = 1).

What is 7 / 2 in Java?

3 (Java cuts off the decimal for whole numbers).

How do you get 3.5 instead of 3 from 7 / 2?

Add a decimal to at least one number (like 7.0 / 2).

print() vs. println()?

print() stays on the same line. println() moves to a new line after printing.

How does "x = 2 + 3;" evaluate?

Java solves the right side first (5), then stores it in x.

What is the order of math operations in Java?

1. Parentheses, 2. * / %, 3. + -

What does (int) 5.99 do?

It chops off the decimal completely, resulting in 5.

What happens if an int goes past its maximum possible limit?

Overflow (it wraps around to a negative number).

What do x++ and x += 3 mean?

x++ adds 1 to x. x += 3 adds 3 to x.