topic.jsh

// Classes and Objects Exercises - Complete the classes and methods below
// Save this file and load it in jshell with: /open topic.jsh
import java.util.ArrayList;

// Exercise 1: Basic Class Creation
// Create a Person class with name and age fields
class Person {
    // Your fields here
    
    // Your constructor here
    
    // Your introduce() method here
    
}

// Exercise 2: Class with Methods
// Create a BankAccount class with account operations
class BankAccount {
    // Your fields here
    
    // Your constructor here
    
    // Your deposit method here
    
    // Your withdraw method here
    
    // Your getBalance method here
    
    // Your getAccountInfo method here
    
}

// Exercise 3: Object Creation and Usage
// Create and return a Person object
public Person createPerson(String name, int age) {
    // Your code here
    
}

// Create and return a BankAccount object
public BankAccount createBankAccount(String accountNumber) {
    // Your code here
    
}

// Demonstrate creating and using a Person object
public void demonstratePersonUsage() {
    // Your code here
    
}

// Exercise 4: Working with Multiple Objects
// Create a Car class
class Car {
    // Your fields here
    
    // Your constructor here
    
    // Your getCarInfo method here
    
    // Your isClassic method here (car is classic if > 25 years old)
    
}

// Compare two cars and return which is older
public Car compareCars(Car car1, Car car2) {
    // Your code here
    
}

// Exercise 5: Object State and Behavior
// Create a Counter class that can increment/decrement
class Counter {
    // Your fields here
    
    // Your constructor here
    
    // Your increment method here
    
    // Your decrement method here
    
    // Your reset method here
    
    // Your getCount method here
    
}

// Exercise 6: Class with Validation
// Create a Student class with input validation
class Student {
    // Your fields here
    
    // Your constructor with validation here
    
    // Your isHonorStudent method here
    
    // Your getStudentInfo method here
    
}

// Exercise 7: Object Interaction
// Create a Book class
class Book {
    // Your fields here
    
    // Your constructor here
    
    // Add any helpful methods here
    
}

// Create a Library class that manages books
class Library {
    // Your fields here
    
    // Your constructor here
    
    // Your addBook method here
    
    // Your checkOutBook method here
    
    // Your returnBook method here
    
    // Your getAvailableBooks method here
    
}

// Test your classes here - uncomment and modify as needed
/*
System.out.println("Testing Person class:");
Person person1 = createPerson("Alice", 30);
Person person2 = new Person("Bob", 25);
System.out.println(person1.introduce());
System.out.println(person2.introduce());

System.out.println("\nTesting BankAccount class:");
BankAccount account = createBankAccount("123456");
System.out.println("Initial: " + account.getAccountInfo());
account.deposit(100.0);
System.out.println("After deposit: Balance = " + account.getBalance());
account.withdraw(30.0);
System.out.println("After withdrawal: Balance = " + account.getBalance());
account.withdraw(100.0); // Should fail - insufficient funds
System.out.println("Final: " + account.getAccountInfo());

System.out.println("\nTesting Car class:");
Car car1 = new Car("Toyota", "Camry", 1995);
Car car2 = new Car("Honda", "Civic", 2020);
System.out.println(car1.getCarInfo());
System.out.println("Is classic: " + car1.isClassic());
System.out.println(car2.getCarInfo());
System.out.println("Is classic: " + car2.isClassic());
Car older = compareCars(car1, car2);
System.out.println("Older car: " + older.getCarInfo());

System.out.println("\nTesting Counter class:");
Counter counter = new Counter();
System.out.println("Initial count: " + counter.getCount());
counter.increment();
counter.increment();
counter.increment();
System.out.println("After 3 increments: " + counter.getCount());
counter.decrement();
System.out.println("After 1 decrement: " + counter.getCount());
counter.reset();
System.out.println("After reset: " + counter.getCount());

System.out.println("\nTesting Student class:");
try {
    Student student1 = new Student("John", 10, 3.8);
    System.out.println(student1.getStudentInfo());
    System.out.println("Is honor student: " + student1.isHonorStudent());
    
    Student student2 = new Student("Jane", 12, 2.5);
    System.out.println(student2.getStudentInfo());
    System.out.println("Is honor student: " + student2.isHonorStudent());
} catch (Exception e) {
    System.out.println("Validation error: " + e.getMessage());
}

System.out.println("\nTesting Library system:");
Library library = new Library();
Book book1 = new Book("1984", "George Orwell", false);
Book book2 = new Book("To Kill a Mockingbird", "Harper Lee", false);

library.addBook(book1);
library.addBook(book2);
System.out.println("Available books: " + library.getAvailableBooks());

library.checkOutBook("1984");
System.out.println("After checking out 1984: " + library.getAvailableBooks());

library.returnBook("1984");
System.out.println("After returning 1984: " + library.getAvailableBooks());
*/