Introduction to Java: History, Architecture and Servers

What is Java? Java is a high-level, object-oriented programming language used to build software like web applications, mobile apps, desktop programs, and enterprise systems. History of Java Java was developed by James Gosling and his team at Sun Microsystems in the early 1990s. Key Milestones: 1991 – Project started as Green Project 1995 – Official release of Java Originally named Oak, later renamed to Java Designed for Write Once, Run Anywhere (WORA) In 2010, Oracle Corporation acquired Sun Microsystems and now maintains Java. Java Architecture Java architecture is designed to be platform-independent. This is achieved using the Java Virtual Machine (JVM). Components of Java Architecture: 1. Java Source Code Written by developers in .java files 2. Java Compiler Converts source code into bytecode Command used: javac 3. Bytecode Intermediate code (.class file) Platform-independent 4. Java Virtual Machine (JVM) Executes bytecode Makes Java platform-independent 5. Java Runtime Environment