HashSet in Java
Learn HashSet: unique element collections backed by HashMap, contains and add operations, and the internal ELEMENT object pattern.
Posts tagged with #java
If-Else Statements in Java
Learn Java if-else branching logic: conditional statements, else-if chains, nested conditionals, and operator precedence considerations for decision making.
Inheritance in Java
Master Java inheritance: extends keyword, super, method overriding, and substitutability, with practical guidance for reliable class hierarchies.
Interfaces in Java
Master pure contracts: default methods, static methods, functional interfaces, and how interfaces define behavior in Java.
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.
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.