Module 1: Introduction to Java

Objectives

Understand the Java compilation and execution process
Write and run a basic Java program
Compare Java and C++ at a high level

Java Program Structure

Here's a simple "Hello, World!" program in Java:

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, world!");
    }
}

Java vs. C++: Key Differences

Java

Runs on JVM
No pointers
Garbage collection
No header files
Platform-independent bytecode

C++

Compiled to native code
Uses pointers
Manual memory management
Requires header files
Platform-specific binaries

Exercise

Write your own Java class that prints your name and favorite programming language.

Next Steps

Try compiling and running your Java program
Install JDK and an IDE (e.g., IntelliJ, Eclipse, or VS Code)
Get ready for Java classes and objects in Module 2