Core Java Training Roadmap (30 Days)

Module 1 - Java Fundamentals

Day 1

Introduction to Java

• History
• Evolution
• Features
• Why Java over C/C++

Day 2

OOP Concepts

• Class
• Object
• Encapsulation
• Inheritance
• Polymorphism
• Abstraction

Day 3

First Java Program

• Structure
• main()
• Compilation & Execution

Day 4

Variables

• Data Types
• Memory Basics

Day 5

Operators

• Arithmetic
• Relational
• Logical

Day 6

Conditional Statements

• if
• if-else
• else-if
• switch

Day 7

Loops

• for
• while
• do-while
• break
• continue

Day 8

Loop Programs Practice

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Module 2 - Methods and Arrays

Day 9

Methods

• Parameters
• Return Types

Day 10

Method Overloading

• Recursion Introduction

Day 11

Arrays Basics

Day 12

Array Traversal & Operations

Day 13

Array Programs

• Largest
• Smallest
• Sum
• Average

Day 14

2D Arrays

Day 15

Array Practice & Revision

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Module 3 - Strings and OOP Deep Dive

Day 16

Strings Basics

Day 17

String Methods

Day 18

String Programs

• Reverse
• Palindrome
• Count Vowels

Day 19

Constructors

Day 20

this Keyword

• static Variables
• static Methods

Day 21

Inheritance

Day 22

Polymorphism

• Overloading
• Overriding

Day 23

Abstraction & Interfaces

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Module 4 - Exception Handling

Day 24

Introduction to Exceptions

• Checked
• Unchecked

Day 25

try catch finally

Day 26

throw throws Custom Exceptions

Day 27

Exception Handling Practice

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Module 5 - Collections Framework

Day 28

Collections Overview

• List
• ArrayList
• LinkedList

Day 29

Set

• HashSet Map
• HashMap

Day 30

Java 8 Introduction

• Lambda Expressions
• Functional Interfaces
• Stream API Overview