Java Beginner Tutorial - 30-Day Plan

Java Beginner Tutorial

A comprehensive 30-day learning plan designed to take you from absolute beginner to proficient Java developer. Follow this structured roadmap to build a solid foundation.

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Week 1: Foundations & Basic Control Flow

• 1
  Introduction to Java, JDK & IDE Setup, First "Hello World" Program
• 2
  Variables, Primitive Data Types (int, double, boolean, char)
• 3
  Operators (Arithmetic, Assignment, Comparison)
• 4
  Getting User Input, Introduction to the String class
• 5
  Conditional Statements: if, else if, else
• 6
  Conditional Statements: switch statement
• 7
  Practice Day: Build a simple CLI calculator or quiz

Week 2: Loops, Arrays, and Methods

• 8
  while and do-while Loops
• 9
  for Loops
• 10
  Arrays (1D): Creation, Access, and Looping
• 11
  Introduction to Methods: Defining, Calling, void
• 12
  Method Parameters and Return Values
• 13
  Practice Day: Build a number guessing game or a task list
• 14
  Review Day: Core Concepts Review

Week 3: Object-Oriented Programming (OOP) - Part 1

• 15
  Introduction to OOP: Classes vs. Objects
• 16
  Creating Classes, Defining Attributes (Fields)
• 17
  Constructors (Default and Parameterized)
• 18
  The this Keyword
• 19
  Access Modifiers (public, private)
• 20
  Getters and Setters (Encapsulation)
• 21
  Practice Day: Create a Book, Car, or BankAccount class

Week 4: OOP - Part 2 & Beyond

• 22
  The static Keyword
• 23
  OOP Pillar: Inheritance (extends keyword)
• 24
  OOP Pillar: Polymorphism (Method Overriding)
• 25
  OOP Pillar: Abstraction (abstract classes/methods)
• 26
  OOP Pillar: Interfaces (implements keyword)
• 27
  The ArrayList Class (Dynamic Arrays)
• 28
  Basic Exception Handling (try, catch, finally)
• 29
  Practice Day: Build a Student Management System
• 30
  Next Steps: Collections Framework, File I/O

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