Java Basics - Ajay Dabade | Python & Java Learning Notes

🚀 Type Casting in Java – Complete Detailed Guide

Introduction In Java programming, data types play a crucial role. Sometimes, we need to convert one data type into another — either to perform calculations, store values, or pass data to methods. This conversion process is…

Java Basics

🚀 StringBuilder in Java — Complete Detailed Guide

Introduction In Java, strings are used everywhere — for messages, input handling, formatting, file processing, and much more ☕ But there is one important thing many beginners don’t realize: 👉 String objects in Java are immutable.…

Java Basics

🚀 Wrapper Classes in Java — Complete Detailed Guide

Introduction In Java, everything is object-oriented — but primitive data types like int, double, char, and boolean are not objects ☕ This creates a problem. What if we want to: Store numbers inside a collection like…

Java Basics

🚀 Java Standard Libraries — Core Classes Every Java Developer Must Know

When learning Java, writing logic is important — but knowing how to use Java’s built-in libraries is equally important ☕ Java provides a massive collection of pre-written classes and packages called the Java Standard Library. These…

Java Basics

10-Writing your First Hello World Program in Java? Here is all you need to know.

👋 Writing Your First Hello World Program in Java 📌 Introduction The Hello World program is traditionally the first program written in any programming language. It helps beginners understand the basic structure of a program, how…

Java Basics

9-How to use comments the right way.

💬 Comments in Java: Single-Line, Multi-Line and Documentation Comments 📌 Introduction Comments in Java are non-executable statements used to explain code. They are ignored by the Java compiler and do not affect program execution. Comments play…

Java Basics

8-Difference between a Variable and Literal. Clear your confusion.

📘 What Are Variables and Literals in Java 📌 Introduction Before writing meaningful Java programs, it is essential to understand how data is stored and represented in a program. Two fundamental concepts that make this possible…

characteristics of object oriented programming

Java Basics

7-Why Object Oriented Programming is Important. Understand its characteristics

📌 Introduction Object-Oriented Programming (OOP) is a programming paradigm that organizes software design around objects rather than functions or logic alone. Each object represents a real-world entity and contains both data and behavior. The strength of…

Java Basics

6-Why we need Object Oriented Programming? Read to find it!

🧠 Need of Object-Oriented Approach 📌 Introduction In the early days of programming, software systems were small and simple. As applications grew larger and more complex, traditional programming approaches started showing limitations. Managing large codebases, maintaining…

why java uses compiler and interpreter both?

Java Basics Java Programming

4-Why Java Uses Both Compiler and Interpreter? You really would fall in love with Java.

📌 Introduction One of the most common questions among Java beginners is: “If Java is compiled, why does it also need an interpreter?” This confusion arises because Java does not follow the traditional compilation model nor…