Method Overloading
Multiple methods, same name — how Java resolves overloaded methods based on parameter types, counts, and order.
Posts tagged with #java-fundamentals
Parameters and Return Values
Master Java method parameters — pass-by-value semantics, varargs, and how to return single or multiple values cleanly.
Method References
ClassName::method or instance::method — shorthand notation for lambdas that call an existing named method directly.
Multidimensional Arrays in Java
Explore Java's multidimensional arrays: 2D and 3D arrays, ragged arrays, matrix representations, and memory layout.
The Object Class in Java
Master toString, equals, hashCode, and getClass — the methods every Java object inherits from Object.
Polymorphism in Java
Understand runtime method dispatch, upcasting, downcasting, and instanceof pattern matching for flexible Java code.
Java Primitive Types
Master Java's 8 primitive types: int, double, boolean, char, float, long, short, byte — the fundamental building blocks of data in Java.
Queue and Deque in Java
Master Java queues: FIFO ordering, Deque for double-ended operations, PriorityQueue for heap-based ordering, and when to use each.
Recursion
Write self-calling methods that break problems into smaller versions of themselves — base case, recursive case, and call stack mechanics.
Java Reference Types
Understand Java reference types: Objects, arrays, and strings — how Java handles complex data structures through references and heap memory.