How can I find the computer's IP address by using the Command prompt?

In the context of CS, here are comprehensive steps given:-

Open command prompt

Firstly, you should press Win+R to open the run dialog box. Then try to type “cmd” and press “Enter” to open the command prompt.

  Using the “ipconfig” Command

In the command prompt windows, you should try to use the following command and press enter

  “ipconfig”

This command would help in displaying the current TCP/IP network configuration values of the machine.

Analysis of the output

The “ipconfig” command would help in producing a list of all network adapters on the computer along with their IP address and other relevant information.

You should try to look for the section corresponding to the active network adapter, which would be under a heading such as “Ethernet adapter”.

Here is an example given:-

Import java.io.*;
Import java.util.*;
// Exception for Book not found
Class BookNotFoundException extends Exception {
    Public BookNotFoundException(String message) {
        Super(message);
    }
}
// Book class
Class Book {
    Private String title;
    Private String author;
    Private String ISBN;
    Public Book(String title, String author, String ISBN) {
        This.title = title;
        This.author = author;
        This.ISBN = ISBN;
    }
    Public String getTitle() {
        Return title;
    }
    Public String getAuthor() {
        Return author;
    }
    Public String getISBN() {
        Return ISBN;
    }
    @Override
    Public String toString() {
        Return “Book{“ +
                “title=’” + title + ‘’’ +
                “, author=’” + author + ‘’’ +
                “, ISBN=’” + ISBN + ‘’’ +
                ‘}’;
    }
}
// Interface for library operations
Interface LibraryOperations {
    Void addBook(Book book);
    Void removeBook(String ISBN) throws BookNotFoundException;
    Book findBookByTitle(String title) throws BookNotFoundException;
    Void displayBooks();
}

// Library class implementing the interface
Class Library implements LibraryOperations {
    Private List books;
    Public Library() {
        Books = new ArrayList<>();
    }
    @Override
    Public void addBook(Book book) {
        Books.add(book);
        System.out.println(“Book added: “ + book);
    }
    @Override
    Public void removeBook(String ISBN) throws BookNotFoundException {
        Book bookToRemove = null;
        For (Book book : books) {
            If (book.getISBN().equals(ISBN)) {
                bookToRemove = book;
                break;
            }
        }
        If (bookToRemove != null) {
            Books.remove(bookToRemove);
            System.out.println(“Book removed: “ + bookToRemove);
        } else {
            Throw new BookNotFoundException(“Book with ISBN “ + ISBN + “ not found.”);
        }
    }
    @Override
    Public Book findBookByTitle(String title) throws BookNotFoundException {
        For (Book book : books) {
            If (book.getTitle().equalsIgnoreCase(title)) {
                Return book;
            }
        }
        Throw new BookNotFoundException(“Book with title “ + title + “ not found.”);
    }
    @Override
    Public void displayBooks() {
        If (books.isEmpty()) {
            System.out.println(“No books in the library.”);
        } else {
            System.out.println(“Books in the library:”);
            For (Book book : books) {
                System.out.println(book);
            }
        }
    }
    // Save library data to a file
    Public void saveToFile(String filename) throws IOException {
        Try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(filename))) {
            Oos.writeObject(books);
            System.out.println(“Library data saved to “ + filename);
        }
    }
    // Load library data from a file
    @SuppressWarnings(“unchecked”)
    Public void loadFromFile(String filename) throws IOException, ClassNotFoundException {
        Try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filename))) {
            Books = (List) ois.readObject();
            System.out.println(“Library data loaded from “ + filename);
        }
    }
}
Public class LibraryManagementSystem {
    Public static void main(String[] args) {
        Library library = new Library();
        // Adding books
        Library.addBook(new Book(“The Great Gatsby”, “F. Scott Fitzgerald”, “12345”));
        Library.addBook(new Book(“1984”, “George Orwell”, “67890”));
        Library.addBook(new Book(“To Kill a Mockingbird”, “Harper Lee”, “54321”));
        // Displaying books
        Library.displayBooks();
        // Finding a book by title
        Try {
            Book book = library.findBookByTitle(“1984”);
            System.out.println(“Found book: “ + book);
        } catch (BookNotFoundException e) {
            System.err.println(e.getMessage());
        }
        // Removing a book by ISBN
        Try {            Library.removeBook(“67890”);

        } catch (BookNotFoundException e) {
            System.err.println(e.getMessage());
        }
        // Displaying books after removal
        Library.displayBooks();

          // Save and load library data to/from file

        Try {
            Library.saveToFile(“library.dat”);
            Library.loadFromFile(“library.dat”);
            Library.displayBooks();
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}