Overview
This module provides a comprehensive introduction to Java programming language, covering its history, features, architecture, and setting up the development environment.
Learning Objectives
- Understand the history and evolution of Java
- Learn about Java's key features and advantages
- Understand JVM, JRE, and JDK architecture
- Set up Java development environment
- Write and execute your first Java program
- Understand Java compilation and execution process
Topics Covered
1.1 Introduction to Programming
- What is Programming?
- Types of Programming Languages
- High-level vs Low-level Languages
- Compiled vs Interpreted Languages
- Introduction to Object-Oriented Programming
1.2 History of Java
- Origin and Evolution of Java
- Java Versions and Milestones
- Java SE, EE, and ME Editions
- Current State and Future of Java
- Java Community Process (JCP)
1.3 Features of Java
- Simple and Easy to Learn
- Object-Oriented
- Platform Independent (WORA)
- Robust and Secure
- Architecture Neutral
- Portable
- High Performance
- Multithreaded
- Distributed
- Dynamic
1.4 Java Architecture
- JVM (Java Virtual Machine)
- Class Loader
- Bytecode Verifier
- Execution Engine
- JIT Compiler
- Garbage Collector
- JRE (Java Runtime Environment)
- JDK (Java Development Kit)
- Java Platform Components
1.5 How Java Works
- Java Source Code (.java)
- Java Compiler (javac)
- Bytecode (.class)
- JVM Execution Process
- Platform Independence Explained
1.6 Setting Up Development Environment
- Installing JDK
- Windows Installation
- macOS Installation
- Linux Installation
- Setting Environment Variables
- JAVA_HOME
- PATH Configuration
- Verifying Installation
- Installing IDE (IntelliJ IDEA / Eclipse / VSCode)
1.7 First Java Program
- Structure of a Java Program
- Hello World Program
- Understanding main() Method
- Compiling Java Programs
- Running Java Programs
- Common Compilation Errors
1.8 Java Development Tools
- Command Line Tools (javac, java, javap)
- Integrated Development Environments (IDEs)
- Build Tools (Maven, Gradle)
- Version Control (Git)
- Java Documentation (Javadoc)
1.9 Java Coding Conventions
- Naming Conventions
- Code Formatting
- Comments and Documentation
- File Organization
- Package Naming
1.10 Basic Program Structure
- Class Declaration
- Method Declaration
- Statements and Blocks
- Whitespace and Indentation
- Semicolons and Braces
Hands-on Exercises
- Install JDK and configure environment variables
- Write and execute "Hello World" program
- Create a program to print your name and address
- Explore bytecode using javap tool
- Write a program with multiple classes
Key Takeaways
- Java is platform-independent and object-oriented
- JVM executes Java bytecode
- JDK includes compiler and tools for development
- Java programs require proper structure and syntax
- Setting up environment is crucial for development
Additional Resources
- Official Java Documentation
- Java Language Specification
- Oracle Java Tutorials
- OpenJDK Source Code
Assessment
- Quiz on Java basics and architecture
- Practical: Set up environment and write first program
- Short answer questions on JVM architecture