1. Platform-Independent

• Java code is compiled into bytecode by the Java compiler.
• This bytecode is platform-independent and can run on any device with a Java Virtual Machine (JVM).

2. Object-Oriented Programming (OOP)

• Java is built around the concepts of OOP: Classes, Objects, Inheritance, Polymorphism, Abstraction, and Encapsulation.

3. Simple and Secure

• Java has a clean syntax, eliminating complex features like pointers and manual memory management.
• Security is a key focus, with features like the Java Security Manager and bytecode verification.

4. Robust and Reliable

• Java handles memory management automatically using Garbage Collection.
• It has features like exception handling and type-checking to ensure reliability.

5. Multi-Threading Support

• Java supports multithreaded programming, allowing concurrent execution of two or more threads to maximize CPU utilization.

6. Write Once, Run Anywhere (WORA)

• The same Java program can run on multiple platforms without modification, as long as the JVM is installed.

7. Rich Standard Library

• Java provides an extensive set of pre-built libraries in its Java API for tasks like data structures, networking, database access, GUI development, and more.

8. High Performance with Just-In-Time (JIT) Compiler

• The JIT compiler improves performance by converting bytecode into native machine code at runtime.

9. Syntax Similar to C/C++

• Java adopts a syntax style similar to C/C++, making it easier for developers familiar with these languages to learn Java.

10. Automatic Memory Management

• Java uses an automatic garbage collector to manage memory allocation and deallocation, reducing the risk of memory leaks.

11. Supports Various Frameworks

• Frameworks like Spring, Hibernate, and JavaFX make it easier to build applications ranging from web to desktop and enterprise solutions.