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Introduction to Java: Basics and Key Concepts with Examples $4.89
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Introduction to Java: Basics and Key Concepts with Examples
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This document introduces the Java programming language, covering its history, features, and basic syntax. Learn why Java is widely used, along with examples to help you write your first program. Perfect for first-year Computer Science students.

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  • January 23, 2025
  • 3
  • 2024/2025
  • Other
  • Unknown

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Introduction to Java
Java is a powerful, object-oriented programming language widely used for
building enterprise-level applications, Android apps, and more. Known for its
portability, scalability, and robustness, Java has remained one of the most
popular programming languages since its inception.

1. History of Java
 Created by: James Gosling and his team at Sun Microsystems in 1995.
 Initially named: Oak, later renamed to Java.
 Owned by: Oracle Corporation after acquiring Sun Microsystems in 2010.

2. Features of Java
1. Platform Independence:
o Java programs are compiled into bytecode, which can run on any
platform with a Java Virtual Machine (JVM).
o "Write Once, Run Anywhere" (WORA) is Java's core philosophy.
2. Object-Oriented:
o Java supports key OOP concepts: encapsulation, inheritance,
polymorphism, and abstraction.
3. Robust and Secure:
o Strong memory management with automatic garbage collection.
o Built-in security features like runtime checks and exception handling.
4. Multithreaded:
o Java allows concurrent execution of multiple threads for efficient
resource utilization.
5. Scalable and High Performance:
o Java is suitable for large-scale applications.
o Features like Just-In-Time (JIT) compilation improve performance.
6. Rich API and Ecosystem:
o Extensive standard libraries for networking, file handling, data
structures, and more.
o Thriving ecosystem with frameworks like Spring, Hibernate, and
Apache Struts.

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