Java
JavaInheritance in Java: Reusing Code with extends, super and Overriding
Learn inheritance in Java — the second pillar of OOP. Understand parent and child classes, the extends keyword, method overriding, and super, all with clear examples.
JavaEncapsulation in Java: Protecting Your Data with private, Getters and Setters
Learn encapsulation in Java — the first pillar of OOP. Use private fields with getters and setters to protect your data and validate changes, explained with simple examples.
JavaConstructors in Java: Setting Up Objects the Right Way
Learn Java constructors from scratch — what they are, how to write one, the this keyword, the default constructor gotcha, and constructor overloading, all with clear examples.
JavaClasses and Objects in Java: The Foundation of OOP
Understand Object-Oriented Programming in Java from scratch — what classes and objects are, how to write a class, create objects with new, and use fields and methods.
JavaStrings in Java: Methods, Comparison and the equals() Trap
Learn how to work with text in Java — String methods, concatenation, and the crucial rule to compare strings with .equals() not ==. Beginner-friendly with examples.
JavaArrays in Java: Storing and Looping Through Many Values
Learn Java arrays from scratch — create them, access elements by index (starting at 0), use .length, loop through them, and avoid the ArrayIndexOutOfBoundsException.
JavaJava Methods Explained: Reusable Code with Parameters and Return Values
Learn Java methods the simple way — how to write and call methods, pass parameters, return values, and organise your code the way professionals do.
JavaJava Loops Explained: for, while and do-while (with Examples)
Learn Java loops the easy way — for, while, and do-while with clear examples, break and continue, the for-each loop, and how to avoid infinite loops.
JavaJava if, else and switch: Making Decisions in Your Code
Learn how Java makes decisions with if, else if, and switch statements — clear beginner examples, when to use each, and the classic missing-break bug explained.