JAVA-Daily-Tasks

Day 11 - OOP Basics

📌 Introduction

Day 11 of my Java Daily Tasks focuses on OOP Basics.

In Day 10, I learned string problem-solving concepts. In Day 11, I am learning the basic concepts of Object-Oriented Programming (OOP) in Java.

This day includes classes and objects, constructors, the this keyword, encapsulation, static members, constructor overloading, method overloading, and arrays of objects.

🎯 Objectives

The main objectives of Day 11 are:

Understand classes and objects
Create and use objects
Understand constructors
Use the this keyword
Implement encapsulation
Understand static variables and methods
Create multiple constructors
Practice constructor overloading
Practice method overloading
Work with arrays of objects
Improve logical thinking using OOP concepts

📚 Topics Covered

Classes
Objects
Constructors
Parameterized constructors
this keyword
Encapsulation
Private variables
Getter and setter methods
Static variables
Static methods
Constructor overloading
Method overloading
Arrays of objects

📁 Folder Structure

Day-11-OOP-Basics/
│
├── Questions/
│   └── Questions.txt
│
├── Screenshots/
│   ├── Output_1.png
│   ├── Output_2.png
│   ├── Output_3.png
│   ├── Output_4.png
│   ├── Output_5.png
│   ├── Output_6.png
│   ├── Output_7.png
│   ├── Output_8.png
│   ├── Output_9.png
│   └── Output_10.png
│
├── Solutions/
│   ├── Q01_Student_Class.java
│   ├── Q02_Employee_Constructor.java
│   ├── Q03_Book_This_Keyword.java
│   ├── Q04_Rectangle_Class.java
│   ├── Q05_Bank_Account_Encapsulation.java
│   ├── Q06_Car_Objects.java
│   ├── Q07_Static_Counter.java
│   ├── Q08_Constructor_Overloading.java
│   ├── Q09_Method_Overloading.java
│   └── Q10_Array_of_Objects.java
│
└── README.md

📝 Practice Questions

Q01 - Student Class

Create a Student class with student details and display the student information using an object.

Q02 - Employee Constructor

Create an Employee class and use a parameterized constructor to initialize employee details.

Q03 - Book Using This Keyword

Create a Book class and use the this keyword to initialize and display book details.

Q04 - Rectangle Class

Create a Rectangle class with length and width and calculate the area of the rectangle using an object.

Q05 - Bank Account Encapsulation

Create a BankAccount class using private variables and getter and setter methods to implement encapsulation.

Q06 - Car Objects

Create a Car class and create multiple car objects to display their details.

Q07 - Static Counter

Create a class with a static counter to count the number of objects created.

Q08 - Constructor Overloading

Create a class with multiple constructors using different parameters and demonstrate constructor overloading.

Q09 - Method Overloading

Create a class with multiple methods having the same name but different parameters and demonstrate method overloading.

Q10 - Array of Objects

Create multiple Student objects and store them in an array. Display the details of all students.

💻 Solutions

No.	Problem	Solution
Q01	Student Class	`Q01_Student_Class.java`
Q02	Employee Constructor	`Q02_Employee_Constructor.java`
Q03	Book This Keyword	`Q03_Book_This_Keyword.java`
Q04	Rectangle Class	`Q04_Rectangle_Class.java`
Q05	Bank Account Encapsulation	`Q05_Bank_Account_Encapsulation.java`
Q06	Car Objects	`Q06_Car_Objects.java`
Q07	Static Counter	`Q07_Static_Counter.java`
Q08	Constructor Overloading	`Q08_Constructor_Overloading.java`
Q09	Method Overloading	`Q09_Method_Overloading.java`
Q10	Array of Objects	`Q10_Array_of_Objects.java`