Course Objective: Teach Java programming skills from scratch, focusing on Java 17.
Target Audience: Complete beginners and experienced programmers.
IDE Setup
IDE Used: IntelliJ IDE by JetBrains.
What is an IDE? Integrated Development Environment for writing and compiling code.
Download Instructions:
Go to IntelliJ IDE's website and download the Community version (free).
Installation steps provided.
Java Basics
SDK (Software Development Kit): Contains tools to compile and run Java applications.
JDK (Java Development Kit): Required for Java development.
First Java Program
Hello World Program: The first program to output "Hello World" to the console.
Basic Syntax:public class Main {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Run Program: Execute the program to see "Hello World" in the console.
Java Fundamentals
Data Types
Primitive Data Types:int, float, double, char, boolean.
Variables: How to declare and initialize variables.
Control Flow
If Statements: Conditional statements to control the flow of the program.
Switch Statements: Alternative to if statements for multiple conditions.
Loops: For loop, while loop, do-while loop for repeated execution of code.
Functions
Defining Functions: Syntax to create a function, pass parameters, and return values.
Getters and Setters: Accessors and mutators for encapsulation in classes.
Object-Oriented Programming (OOP)
Classes and Objects:
Class: Blueprint for creating objects (e.g., Car, Plane).
Object: Instance of a class with specific values.
Inheritance: Mechanism to create a new class based on an existing class.
Polymorphism: Ability of different classes to be treated as instances of the same class through inheritance.
Constructors
Types of Constructors: Default and parameterized constructors.
Purpose: To initialize objects with specific values.
Static Keyword
Static Variables/Methods: Belong to the class rather than any instance.
Usage: Call static methods or access static fields without creating an instance of the class.
Arrays
Definition: Collection of variables of the same type.
Initialization: Different ways to declare and initialize arrays.
Accessing Elements: Using indexes to access array elements.
Array Length: Use array.length to get the number of elements in an array.
Challenge Summary
Objective: Create a function to find the maximum number in an array.
Solution: Use a function that receives an array and returns the maximum value.
Final Summary
The course covers essential Java programming concepts, including data types, control structures, functions, OOP principles, and practical coding challenges.