Tutorials under 'Java Basics'

Variable Declaration vs Definition in Java: Key Differences and Default Values

Understand the difference between declaring and defining a variable in Java. Learn how initialization works, when memory is allocated, and the default values assigned to instance variables.

Java Data Types: Complete Guide to Primitive and Non‑Primitive Types

Understand Java data types in depth—learn the memory size, range, default values, and use‑cases of all primitive types as well as strings, arrays, and classes.