Java Basics – What, Why, and the Real Story

Java Basics – What, Why, and the Real Story


What is Java?

Java is a programming language and a platform.
In simple words – you write code once, and it can run almost anywhere (Windows, Mac, Linux, even mobile).
It’s object-oriented, meaning we deal with real-world stuff in code (objects, classes).
It’s been around since the 90s, but still in high demand — used for apps, websites, games, banking software, you name it.

 Requirements to Run Java

To code and run Java, you need:

  1. JDK (Java Development Kit) – to write and compile programs.

  2. JRE (Java Runtime Environment) – to run Java programs.

  3. A code editor (like IntelliJ IDEA (My favorite), Eclipse, or even VS Code).

  4. A brain that can handle logic (no joke 😏).

 Advantages of Java

  • Platform Independent – Write once, run anywhere (WORA).

  • OOP – Easy to maintain and scale because of classes/objects.

  • Huge Community – Millions of devs; help is always out there.

  • Secure – Strong memory management and security features.

  • Used Everywhere – Android apps, banking, enterprise software, games.

 Disadvantages of Java

  • Slower than C/C++ – Because it runs on the JVM (not directly on hardware).

  • Takes More Memory – Can be heavy for small devices.

  • Verbosity – More lines of code compared to languages like Python.

  • UI Development Pain – Swing/JavaFX is outdated compared to modern frameworks.



My POV

Java is like a Toyota Corolla — not flashy, but reliable, everywhere, and will get you the job done for years. If you’re learning coding seriously, Java will give you a strong foundation.


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