Java Beginner to Developer

This repository documents my daily journey from Java basics to developer-level problem solving and system thinking.

Goals

• Build strong fundamentals
• Practice daily coding
• Prepare for backend & full-stack interviews

Structure

• Day-wise problems
• Clean and readable code
• Interview-oriented solutions

Day 1 – Java Basics & Setup

Topics covered:

• How Java works (JVM, bytecode, platform independence)
• Java program structure
• main method as JVM entry point
• Printing output using System.out.println
• Variables and basic data types

Code location:

• src/day01_basics/

Day 2 – Control Flow & Decision Making

Topics covered:

• if / else conditions
• Logical operators (AND, OR)
• switch statement
• Real-world business logic examples

Code location:

• src/day02_control_flow/

Day 3 – Loops & Iteration

Topics covered:

• for loop
• while loop
• do-while loop
• Loop-based logic problems

Code location:

• src/day03_loops/

Day 4 – Methods & Code Reusability

Topics covered:

• Creating custom methods
• Parameters and return types
• Writing reusable business logic

Code location:

• src/day04_methods/

Day 5 – Arrays & Iteration

Topics covered:

• Array declaration and initialization
• Accessing array elements
• Iterating through arrays
• Multi-dimensional arrays
• Common array operations

Code location:

• src/day05_arrays/

Day 6 – OOP Basics (Classes & Objects)

Topics covered:

• Class and object creation
• Constructors
• Instance variables
• Basic object behavior modeling

Code location:

• src/day06_oop_basics/