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Java Programming Foundations

Learn Java programming step by step, from Hello World, variables, input/output, branches, loops, arrays, and Java String methods to methods, recursion, object-oriented programming, exception handling, and file I/O, while building a first mental model for the JVM, static types, and control flow.

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Table of Contents

Chapter 1: Hello World

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1.1 Hello World and the JVM
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1.2 Data Types and Variables
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1.3 Input and Output
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1.4 Expressions and Operators

Chapter 2: Branches

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2.1 Relational and Logical Operators
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2.2 Conditional Branches
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2.3 The switch Statement

Chapter 3: Loops

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3.1 while and do-while Loops
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3.2 for Loops and Counting
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3.3 Nested Loops
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3.4 break and continue

Chapter 4: Arrays and String

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4.1 Arrays and Indexes
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4.2 2D Arrays and Sequence Statistics
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4.3 String Basics and Common Methods
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4.4 String Search and Comparison
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4.5 String Transforming and Splitting

Chapter 5: Methods

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5.1 Methods, Parameters, and Returns
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5.2 Scope and Lifetime
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5.3 Recursion

Chapter 6: Object-Oriented Programming

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6.1 Classes, Objects, and Encapsulation
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6.2 Inheritance and Overriding
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6.3 Polymorphism and Interfaces

Chapter 7: Exceptions

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7.1 Exceptions and Handling
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7.2 Custom Exceptions

Chapter 8: File I/O

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8.1 Text File I/O and Paths
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8.2 Line-by-Line Reading and Processing
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8.3 Writing, Appending, and Resource Management
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8.4 Directories, Encoding, and File Management

SUITABLE AUDIENCE

Complete beginners, students who want a solid Java foundation, and learners preparing for backend or Android development.

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