AP Computer Science A Cram Course (75 minutes)

Learn objects and classes, create student objects with constructors, and use methods with parameters and return values. Master Java basics, string methods, wrapper classes, and math utilities like random.

Master unit three booleans and if statements by exploring boolean expressions, comparison operators, and control flow. Learn not, and, or, and De Morgan's laws with examples for the AP exam.

Master iteration with while and for loops, learning initialization, condition, and increment, avoid infinite loops, reverse strings, and analyze nested loops for the AP Computer Science A exam.

Learn how to write a Java class named student with private age and gpa fields, constructors, and a print method, then create and print a student object in main.

Learn how to design Java classes with accessors and getters, mutators and setters, the string method, static members, this keyword, and proper class, method, and loop scopes.

Explore arrays in Java: declare string, int, and double arrays, understand default values, access elements with zero-based indices, and traverse with for and for-each loops.

Discover how array lists replace fixed-length arrays with dynamic size, using wrapper types, and operations like add, remove, get, set, size, and zero-based indexing, plus traversal with for loops.

Explore sorting algorithms such as selection sort, merge sort, insertion sort, and binary search, and learn how merge sort uses recursion on arrays and how data order affects efficiency.

Explore 2d arrays as arrays of arrays, declare with two brackets, and traverse with nested loops to access rows and columns; learn to set and print values and use length.

Explore inheritance in Java by understanding is-a relationships, extends syntax, and method overriding. Learn how super calls access parent behavior and how polymorphism governs runtime method selection.

Explore recursion in unit ten, review how methods call themselves, learn base cases, and see factorials illustrate recursive computation in AP computer science a.