public class DataBases
{

    private  Connection link;
    private  java.sql.Statement  stmt;
    public    ResultSet rs;

    public DataBases()
    {
        try
        {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            String connectionUrl = "jdbc:sqlserver://localhost:1433;databaseName=DB;";
            Connection con = DriverManager.getConnection(connectionUrl);
        }
        catch (SQLException e)
        {
            System.out.println("SQL Exception: "+ e.toString());
        }
        catch (ClassNotFoundException cE)
        {
            System.out.println("Class Not Found Exception: "+ cE.toString());
        }
     }
}

sqljdbc_auth.dll

Class.forName("net.sourceforge.jtds.jdbc.Driver");
        String connectionUrl = "jdbc:jtds:sqlserver://localhost:1433;databaseName=DB;integratedSecurity=true";
        Connection con = DriverManager.getConnection(connectionUrl);

String ConnectionUrl = "jdbc:sqlserver://localhost:1433;databaseName=DB","username","password");"