What is Java

What is Java

Java programming is a powerful, high-level, object-oriented programming language designed to be simple, secure, and platform-independent. It allows developers to write code once and run it anywhere – a concept known as WORA (Write Once, Run Anywhere).

Created in 1995 by James Gosling at Sun Microsystems (now owned by Oracle Corporation), Java has become one of the most widely used programming languages in the world. From mobile apps and web applications to enterprise software and IoT devices, Java is everywhere. 

 What makes Java unique is its philosophy:  "Write Once, Run Anywhere" (WORA)

 This means that once you write a Java program, you can run it on any device or operating system (Windows, Mac, Linux, etc.) without changing your code – thanks to the Java Virtual Machine (JVM).

Features of Java Programming

High-Level Language

Java abstracts away complex machine-level operations. This means developers can focus more on building logic and solving problems rather than worrying about memory management or hardware interaction.

✅ Object-Oriented

Java is based on the principles of Object-Oriented Programming (OOP). This includes:

  • Classes and Objects

  • Encapsulation

  • Inheritance

  • Polymorphism

  • Abstraction

These principles help organize code in a modular, reusable, and maintainable way.

✅ Platform-Independent

Unlike other languages that compile code into machine-specific instructions, Java compiles code into bytecode, which runs on any system equipped with a Java Virtual Machine (JVM).

✨ This is what makes Java so powerful – the same code can run on Windows, macOS, Linux, or even Android without rewriting or recompiling it.

✅ Robust and Secure

Java emphasizes error-handling, garbage collection, and no direct pointer access, which makes it a safe and reliable choice for building critical applications.

✅ Multithreaded and Scalable

Java supports concurrent programming, meaning it can handle multiple tasks at the same time – a key feature in modern applications that require speed and performance.

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