A reference repo that illustrates the following:

• Variables
• Scope
• If Else
• Switch
• Loops
• Equality/Identity
• Functions
• Stdin/Stdout
• Optionals
• Enums
• Constants
• Precedence

• Clone this repo
• Open the pom.xml file "Open as Project"
• Navigate to the Main class, click on the green arrow to run the application

• Java Tutorial for Beginners (2h 30m)
• Java Tutorial - For Beginners (3h)
• Java Programming Tutorial 6 - Variables (9m)
• Java For Beginners: While, Do While & For Loops (11m)
• Java Enum Tutorial (6m)
• Java Final Keyword Tutorial - Learn Final Variables, Methods and Classes (7m)
• Casting (8m)
• Operator Precedence (Java Tutorial) (5m)
• Identity vs. Equality in Java with coding examples (6m)
• Java is pass/call by value or pass/call by reference (8m)
• Java OOPs Concepts (30m)
• Memory (10m)
• Garbage collection (5m)
• OOP: Object-oriented Programming in (7m)
• OOP: Object Oriented Programming In Java (2h)

• Java Modules
• Java Class Hierarchy
• Scanner Doc
• Integer vs int

Every program is a set of instructions, whether it’s to add two numbers or send a request over the Internet. Compilers and interpreters take human-readable code and convert it to computer-readable machine code.

• Two types of languages:
  • Declarative (SQL)
  • Imperative (JavaScript, Java)
• Two types of programs:
  • Compiled (Java)
  • Interpreted (JavaScript)
• Two types of strength:
  • Strongly Typed (No implicit conversions allowed) (Java, TypeScript)
  • Weekly Type (implicit conversions allowed) (JavaScript)
• Two types of typing:
  • Statically Typed (Checked at compile time) (Java)
  • Dynamically Typed (Checked at run time) (JavaScript)
• Two types of levels:
  • One (+5v, +3v)
  • Zero (0 volts)

• There are two types in Java: Primitvie Types and Reference Types:
  • 8 Primitive Types (Value Types)
    • Stored on the stack
  • Reference types are objects (classes)
    • Stored in heap memory, primitives in the class are stored in the heap
• Lists/Arrays are zero based (first item is zero)
• Every Java app must have one static main method

• byte (Range: -128, 127)
• short (Range: -32,768, 32,767)
• int
• long
• float
• double
• boolean
• char
• Primitve Wrapper Objects:
  • Byte
  • Short
  • Integer
  • Long
  • Float
  • Double
  • Boolean
  • Character