Java Basic Functions & Arrays

What you'll learn

• Understand functions (methods) and their purpose
• Write reusable code using methods
• Use parameters and return values effectively
• Apply method overloading
• Understand pass-by-value in Java
• Learn basic recursion concepts
• Work with 1D and 2D arrays
• Traverse, search, and sort array data
• Build structured programs using functions and arrays

This course includes:

• 3 Coding Projects
• 12 Hours Live Classes
• Online / Onsite (Physical)
• Practice Code Files
• Worksheets & Exercises
• Certificate of Completion

Course Content

Functions (Methods)

Introduction to Methods

• What is a Function / Method?
• Benefits of Using Methods (Reusability, Modularity)
• Method Syntax and Structure
• Calling a Method

Return Types & Parameters

• void Methods (No Return Value)
• Value-Returning Methods
• Methods with No Parameters
• Methods with Parameters
• Passing Multiple Parameters

Method Overloading

• What is Method Overloading?
• Same Method Name with Different Parameters
• Compile-Time Polymorphism (Basic Idea)

Pass by Value (Java Concept)

• Understanding Pass by Value
• How Java Handles Arguments
• Practical Examples

Recursion (Basic)

• What is Recursion?
• Base Case and Recursive Case
• Simple Recursive Programs (Factorial, Countdown)

Arrays

1D Arrays

• Introduction to Arrays
• Declaring and Initializing Arrays
• Accessing Array Elements
• Updating Values

2D Arrays

• Introduction to 2D Arrays (Matrix Concept)
• Declaring and Initializing 2D Arrays
• Row and Column Access

Array Traversal

• Using Loops to Traverse Arrays
• Traversing 2D Arrays
• Printing Array Elements

Searching & Basic Sorting

• Linear Search
• Finding Maximum and Minimum
• Basic Sorting (Bubble Sort – Introduction)
• Swapping Elements

Practice Projects for Real-World Skills

• Calculator using Methods
• Factorial Program (Recursion)
• Student Marks Analyzer (Arrays)
• Matrix Addition Program
• Number Search & Sorting Program

Requirements

• Completion of Java Basic Modules 1 & 2
• Understanding of control flow and loops
• Laptop/PC with Java installed

Description

This module introduces functions (methods) and arrays—two of the most important concepts in programming. Students will learn how to break programs into reusable parts and work with collections of data efficiently.

It strengthens problem-solving skills and prepares students for Object-Oriented Programming.

Why Choose This Course?

• Builds Strong Programming Structure
• Introduces Reusable Coding Techniques
• Essential for Advanced Java
• Hands-On Problem Solving
• Foundation for OOP Concepts

Activities During Class

• Writing and calling methods
• Passing data between methods
• Practicing recursion problems
• Working with arrays and matrices
• Implementing search and sorting

Who Is This Course For?

• Students who completed Java Modules 1 & 2
• Beginners progressing in programming
• Learners preparing for OOP

Course Highlights

• Functions & Arrays Mastery
• Real Coding Practice
• Problem-Solving Focus
• Interactive Sessions
• Certificate of Completion