Ap computer science a - Study guides, Class notes & Summaries

AP Computer Science A - Review 1 Latest Update 100% Pass What is the difference between an `ArrayList` and an array in Java? An `ArrayList` is a resizable data structure that can grow and shrink dynamically, whereas an array has a fixed size. Additionally, `ArrayList` provides methods for manipulating the list, such as adding, removing, and searching for elements. What is inheritance, and how does it work in Java? Inheritance allows a new class (subclass) to inherit properties...

AP Computer Science A Terms Exam Questions and Answers

AP Computer Science A Final Exam Review Questions and Answers

AP COMPUTER SCIENCE A UNIT 1 EXAM QUESTIONS AND ANSWERS ALREADY PASSED What are the main primitive data types in Java, and what are they used for? The main primitive data types in Java are `int` (for integers), `double` (for floating-point numbers), `boolean` (for true/false values), `char` (for single characters), `byte`, `short`, `long`, and `float`. These are used to store basic data values directly in memory. Consider the following code segment: ```java int x = 5; int y = ...

AP COMPUTER SCIENCE A UNIT 1 QUIZ GRADED A+ What is a `class` in Java? A class in Java is a blueprint for creating objects. It defines the properties (attributes) and behaviors (methods) that the objects of that class will have. Explain the difference between a `primitive data type` and a `reference data type`. A primitive data type holds simple values like integers, characters, and booleans. A reference data type holds references to objects, such as arrays or instances of cla...

AP Computer Science A Unit 3 Progress Check MCQ Exam

AP CS Principles Diagnostic Questions & Answers How are procedures abstract in computer science? A)They use actual values to represent concepts. B)They represent the lowest level of code for a computer to run. C)They can be used without understanding or seeing the code used. D)They are blocks of code that do something specific. - Correct Ans-C)They can be used without understanding or seeing the code used. What do parameters used in a procedure provide? A)They return calculated values f...

AP Computer Science A Terminology Study Guide % - Answer>> This symbol is the modulas symbol; gives remainder after division. // - Answer>> This symbol is the single line comment symbol. Abstract class - Answer>> A superclass that represents an abstract concept, and therefore should not be instantiated. Abstraction - Answer>> A technique used to command newly-created instances to perform different actions. Abstract method - Answer>> A method unde...

AP Computer Science A Unit 8 Progress Check: MCQ Study 2023A two-dimensional array myArray is to be created with the following contents. {{0, 0, 3}, {0, 0, 0}, {7, 0, 0}} Which of the following code segments can be used to correctly create and initialize myArray ? int myArray[][] = new int[3][3];myArray[0][2] = 3;myArray[2][0] = 7; int myArray[][] = new int[3][3];myArray[0][2] = 7;myArray[2][0] = 3; int myArray[][] = {{0, 0, 3}, {0, 0, 0}, {7, 0, 0}}; - ANSWER D) I and III Consider the...

AP Computer Science A Chapter MidTerm 1-4 Review A class is to a __________ while a blueprint is to a _____________ - Answer>> object, house Scope - Answer>> Determined by where the data is declared Instance Data - Answer>> Memories which are allocated for each object Local Data - Answer>> The data that exists only within the method Java automatically initializes any ________ ______ _______ ______ _________ ____________ - Answer>> variable declar...