what is BindingSource object ?

help me java web (Can you guide the solution?) 1)file db DbContext public class DBContext {    protected Connection connection;    public DBContext()    {               try {            String user = "sa";            String pass = "123456789";            String url = "jdbc:sqlserver://MSI:1433;databaseName=MyOrder";            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");            connection = DriverManager.getConnection(url, user, pass);        } catch (ClassNotFoundException | SQLException ex) {            Logger.getLogger(DBContext.class.getName()).log(Level.SEVERE, null, ex);        }    } } 2)public class DBContext1 {            public Connection getConnection()throws Exception {        String url = "jdbc:sqlserver://"+serverName+":"+portNumber +";databaseName="+dbName;        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");        return DriverManager.getConnection(url, userID, password);    }      private final String serverName =…

In C++ Create a new project named lab8_1. You will be implementing two classes: A Book class, and a Bookshelf class. The Bookshelf has a Book object (actually 3 of them). You will be able to choose what Book to place in each Bookshelf.  Here are their UML diagrams  Book class UML Book - author  : string- title   : string- id      : int- count   : static int + Book()+ Book(string, string)+ setAuthor(string) : void+ setTitle(string) : void+ print() : void+ setID() : void And the Bookshelf class UML Bookshelf - book1 : Book- book2 : Book- book3 : Book + Bookshelf()+ Bookshelf(Book, Book, Book)+ setBook1(Book) : void+ setBook2(Book) : void+ setBook3(Book) : void+ print() : void Some additional information: The Book class also has two constructors, which again offer the option of declaring a Book object with an author and title, or using the default constructor to set the author and title later, via the setters . The Book class will have a static member variable…

Explain how to use wrapper classes for non-object data types so that you don't end up with a jumbled bag of non-object and object values?