import java.sql.*;

public class TestConnect { public static void main(String [] args){

// Definitions for Microsoft (MS) SQL Server connection String uri = "jdbc:sqlserver://theodore.ist.rit.edu;databaseName=Jobs"; String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; String user = "330User"; String password= "330Password"; // Connection object to database Connection conn = null; // Load the database driver try { Class.forName( driver ); System.out.println("Driver loaded"); } catch( ClassNotFoundException cnfe ){ System.out.println("Cannot find or load driver "+driver); cnfe.printStackTrace(); System.exit(1); } // Open the database try{ conn = DriverManager.getConnection( uri, user, password ); System.out.println("Database open"); } catch(SQLException sqle){ System.out.println("Could not connect to DB: "+uri); sqle.printStackTrace(); System.exit(2); } // Close the database try{ conn.close(); System.out.println("Database closed"); } catch(SQLException sqle){ System.out.println("Could not close database"); sqle.printStackTrace(); System.exit(3); } } // end main } // end TestConnect

How can I use this code to change to the question request.

1. Create a data layer class file named "SQLServerDatabase". The SQLServerDatabase class file should have attribut2es for each of the connection parameters. These parameters can be set in the constructor or when they are declared a. b. There should also be a "connection" attribute to hold the DB connection object. There should be a public "connect" method. This method will attempt to connect to the database. If successful, it should set the connection attribute and return true. If unsuccessful, it should return false. Finally, there should be a "close" method that closes the connection and returns true or false depending on the success of the close. c. d