1. Installing JDK

   ⇒ Search JDK Download

   ⇒ Make sure to download from the oracle website.

   ⇒ Download the latest version

2. First Class using Text Editor

   import java.lang*;
   
   public class First {
   	public static void main(string[] args){
   		System.out.println("Hello World");
   	}
   }	
   

3. Compiling and Running

   ⇒ By open terminal go to file location and write javac FileName.java .

   → It convert fileName.java into a FileName.class

   ⇒ Run by java FileName

4. Anatomy of a Class

   ⇒ Add a image of anatomy by writitng

5. File Extensions

   ⇒ .Java

   → Contains Java Source Code → High Level Human Readable → Used for Development → File is editable

   ⇒ Class

   → Contains Java Bytecode → For consumption of JVM → Used for Execution → Not meant to be edited

6. JDK vs JVM vs JRE

   ⇒ JDK

   → It's a software development kit required to develop Java applications.

   → Includes the JRE, an interpreter/loader (Java), a compiler (javac), a doc generator (Javadoc), and other tools needed for Java development.

   → Essentially, JDK is a superset of JRE

   ⇒ .JRE

   → t's a part of the JDK but can be downloaded separately.

   → Provides the libraries, the JVM, and other components to run applications

   → Does not have tools and utilities for developers like compilers or debuggers.

7. Showing Output

   ⇒ Add image

8. Importance of the main method

   ⇒ Entry Point: It's the entry point of a Java program, where the execution starts. Without the main method, the Java Virtual Machine (JVM) does not know where to begin running the code.

   ⇒ Public and Static: The main method must be public and static, ensuring it's accessible to the JVM without needing to instantiate the class.

   ⇒ Fixed Signature: The main method has a fixed signature: public static void main(String[] args). Deviating from this signature means the JVM won't recognize it as the starting point.

9. Installing IDE(Intellij Idea)

   ⇒ IDE stands for Integrated Development Environment.

   ⇒ Software suite that consolidates basic tools required for software development.

   ⇒ Central hub for coding, finding problems, and testing.

   ⇒ Designed to improve developer efficiency

10. Need of IDE

⇒ Streamlines development.

⇒Increases productivity.

⇒ Simplifies complex tasks.

⇒ Offers a unified workspace.

⇒ IDE Features

1. Code Autocomplete
2. Syntax Highlighting
3. Version Control
4. Error Checking