• Understanding what Java is and its history
• Setting up your Java development environment
• Writing your first Java program
• Understanding the basic structure of a Java program
• Running Java programs from command line

Java is a high-level, object-oriented programming language that runs on billions of devices. It's known for its "Write Once, Run Anywhere" capability.

Every Java program has these essential components:

• Class declaration: public class ClassName
• Main method: Entry point of the program
• Statements: Instructions that perform actions

• Java is case-sensitive
• Statements end with semicolons (;)
• Code blocks are enclosed in curly braces {}
• File name must match the public class name

1. HelloWorld.java - Your first Java program
2. BasicStructure.java - Understanding Java program structure
3. Comments.java - Different types of comments in Java

1. Open command prompt/terminal
2. Navigate to this folder
3. Compile: javac HelloWorld.java
4. Run: java HelloWorld

1. Modify the HelloWorld program to print your name
2. Create a program that prints multiple lines
3. Experiment with different comment types

• 'javac' is not recognized: Make sure Java is installed and PATH is set
• File not found: Ensure you're in the correct directory
• Compilation errors: Check for typos and missing semicolons

• Oracle Java Documentation
• Java Tutorial

Next Day: Day 02 - Variables and Data Types