Using Objects and Methods — AP Computer Science A

1. Using Objects and Methods

15–25% of the AP exam. Key topics: Primitive data types: int, double, boolean, Variable declaration and assignment, Arithmetic operators and operator precedence, Integer division and modulo operator, Calling methods on objects using dot notation, Constructor calls with the new keyword, String methods: length(), substring(), indexOf(), equals(), compareTo(), Math class methods: Math.abs(), Math.pow(), Math.sqrt(), Math.random(), Wrapper classes: Integer and Double, Autoboxing and unboxing, System.out.print() and System.out.println().

15–25% exam weight standard track

Unit 1: Using Objects and Methods

Study guide content for this unit is being prepared. Check back soon for complete lesson notes, formula sheets, and worked examples.

Topics in this unit

Primitive data types: int, double, boolean
Variable declaration and assignment
Arithmetic operators and operator precedence
Integer division and modulo operator
Calling methods on objects using dot notation
Constructor calls with the new keyword
String methods: length(), substring(), indexOf(), equals(), compareTo()
Math class methods: Math.abs(), Math.pow(), Math.sqrt(), Math.random()
Wrapper classes: Integer and Double
Autoboxing and unboxing
System.out.print() and System.out.println()