Creating Classes Creating a class is the most basic thing you need to know to do on the second Collegeboard FRQ. This is means that you should be able to define a class with the required attribute...

Lesson on Java Wrapper Classes Introduction Java’s primitive data types are efficient but not as flexible as objects. Wrapper classes turn primitive data types into objects. Part of java.la...

Data Types and Control Structures Lesson By Luna and Tanisha and Rachit Find link to notebook in Slack coding channel and follow along. WGET to have easy access to these materials (WGET not requir...

ArraysList Overview Important Vocabulary Array is a data structure used to implement a list of primitive or object data Element is a single value within the array The index of an element is the po...

Math Class Intro The Math class in Java is part of the java.lang package, which is automatically imported, hence you don’t need to manually import it. The Math class provides a collection of metho...

FRQ 2012 4 A grayscale image is represented by a 2-dimensional rectangular array of pixels (picture elements). A pixel is an integer value that represents a shade of gray. In this question, pixel ...

Introduction In Java, there are two main types of data types primitive/value types and reference types. We will be using the terms stack and heap here to describe memory allocation. ...

AP Prep FRQ 1 Link FRQ 2 Link FRQ 3 Link FRQ 4 Link PBL Issue Link AP Prep Plan Week 1-2: Foundations of Java Programming Day 1-2: Introduction to Java syntax, data types, and varia...

2015 Collegeboard FRQ Question 4 This question involves the design of an interface, writing a class that implements the interface, and writing a method that uses the interface. a. A number group ...

2015 Collegeboard FRQ Question 3 A two-dimensional array of integers in which most elements are zero is called a sparse array. Because most elements have a value of zero, memory can be saved by sto...