java.io and java.nio.file
Read, write, and navigate files with java.io and java.nio.file: Path, Files, BufferedReader, BufferedWriter, and directory walking.
Posts tagged with #java
Iterating Collections in Java
Master Java collection iteration: Iterator and ListIterator interfaces, for-each loop, fail-fast behavior, and concurrent modification.
Lambda Expressions
(params) -> expression or (params) -> { statements } — write concise function literals in Java for functional interfaces.
LinkedList in Java
Explore Java's doubly-linked list: insertion and removal performance, when LinkedList beats ArrayList, and memory trade-offs.
Method Anatomy
Learn how to read and write Java methods — access modifiers, return types, parameters, and the method body that holds the logic.
Method Overloading
Multiple methods, same name — how Java resolves overloaded methods based on parameter types, counts, and order.
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.