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Learn Java programming, object-oriented design, data structures, algorithms, and recursion.
This AP Computer Science A course on Study Mondo covers 11 topics organized across 10 categories. Each topic includes detailed written explanations, worked examples, practice problems with step-by-step solutions, flashcards for review, and interactive lessons to help you master the material.
All content is completely free. Start with any category below, or jump to a specific topic that you need help with.
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Variables, data types, expressions, and assignment statements
Strings, wrapper classes, constructors, and method calls
Conditional logic, comparison operators, and control flow
while loops, for loops, nested loops, and loop algorithms
Class design, instance variables, methods, constructors, and encapsulation
Array creation, traversal, and common algorithms
ArrayList methods, traversal, and wrapper classes
Two-dimensional arrays, nested loops, and row/column traversal
Superclass/subclass, polymorphism, abstract classes, and the Object class
Recursive methods, base cases, and recursive algorithms