Java Tutorial By Krishnamohan Yagneswaran

Java stands tall as one of the most influential technologies in the world of software development. First introduced in the mid-1990s by Sun Microsystems, this robust language has grown into a foundational tool used across various industries, powering everything from mobile apps to enterprise systems.

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💡 Why Java Remains a Top Choice for Developers

Known for its speed, security, and reliability, Java is a preferred toolset for building scalable and high-performance applications. It plays a crucial role in many environments—ranging from smartphones and gaming devices to cloud servers and scientific computing systems.

Key Java Basics (With Detailed Guides)

Below are the essential Java topics you should get familiar with. Click on each topic to learn more:

• Java Syntax – Understand the basic structure and formatting rules of Java programs.

• Java Output – Learn how to display information using System.out.println() and other methods.

• Java Comments – Discover how to write inline and block comments to make your code readable.

• Java Variables – Store data and manipulate values using variables.

• Java Data Types – Work with primitive types like int, char, double, and more.

• Java Type Casting – Convert one data type into another effectively.

• Java Operators – Use arithmetic, logical, and comparison operators in expressions.

• Java Strings – Manage and manipulate text using the String class.

• Java Math – Explore built-in mathematical functions and calculations.

• Java Booleans – Handle true/false values in logic and conditions.

🔸 Control Flow & Decision-Making

Control flow helps you define the logic of your application. Here are the essential control structures:

• Java if...else – Make decisions in your code based on conditions.

• Java switch – Use multiple case-based branching instead of long if-else chains.

• Java while loop – Execute blocks repeatedly as long as a condition holds true.

• Java for loop – Run a block a specific number of times with a loop counter.

• Java break and continue – Control the loop execution flow with jump statements.

🔸 Working with Collections

Handling data efficiently is crucial in programming. Learn about:

• Java Arrays – Store multiple values of the same type in a single variable.

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