Introduction to Java
Chapter 1: Introduction to Java 1.1 What is Java? Java is a high-level, object-oriented, platform-independent programming language developed by Sun Microsystems (now owned by Oracle). It is used to build web, mobile, desktop, and enterprise applications. It follows the WORA principle — Write Once, Run Anywhere — allowing compiled code to run on any device with the JVM (Java Virtual Machine). 1.2 History of Java Java was created by James Gosling and his team at Sun Microsystems in 1995. Originally named Oak, it was designed for interactive television, but later rebranded as Java and optimized for web applications. 1.3 Features of Java Simple: Easy to learn and use, especially for those familiar with C/C++. Object-Oriented: Promotes modularity, code reuse, and better structure. Platform-Independent: Runs on any OS with JVM. Secure: Uses sandboxing and classloaders to prevent malicious code. Robust: Strong memory management, garbage collect...