How do I design a class in Java?

How do I design a class in Java?

To design a class in Java, start by defining its purpose and the data it will manage. What functionality do you need?

I want to create a class for a library book. What attributes should I include?

You might include attributes like title, author, ISBN, and availability status. Would you like to add methods for borrowing or returning the book?

Yes, that sounds good! How do I implement those methods?

You can create methods like borrow() and returnBook(). In borrow(), check if the book is available, and in returnBook(), update the status accordingly.

Can you show me a simple code example?

Sure! Here's a basic example:

public class Book {
    private String title;
    private String author;
    private String isbn;
    private boolean isAvailable;

    public void borrow() {
        if (isAvailable) {
            isAvailable = false;
            System.out.println("Book borrowed.");
        } else {
            System.out.println("Book is not available.");
        }
    }

    public void returnBook() {
        isAvailable = true;
        System.out.println("Book returned.");
    }
}