Problema Jsp + Sql Server

public class ConnectionFactory {
	private Connection c;
	static public Connection CriarConexao() throws SQLException{
		try{
		Class.forName("net.sourceforge.jtds.jdbc.Driver");
	    Connection c;
		System.out.println("Conectando ao Banco");
		c = DriverManager.getConnection("jdbc:jtds:sqlserver://localhost/Northwind","","");
		return c; // quando eu vo na pagina o Debug aparece nessa linha. por que?
		}
		catch (ClassNotFoundException e) {
			throw new SQLException(e.getMessage());
		}	
	}

public class ClienteDAO {
	
	private Connection c;
	
	public ClienteDAO() throws SQLException{
		c = ConnectionFactory.CriarConexao();
	}
	
	public List<Cliente> MostrarClientes() throws SQLException{
		List<Cliente> clientes = new ArrayList<Cliente>();
		String sql = "Select * From Clientes";
		PreparedStatement ps = c.prepareStatement(sql);
		ResultSet rs = ps.executeQuery();
		
		while(rs.next()){
			Cliente cliente = new Cliente();
			cliente.setId(rs.getLong("id"));
			cliente.setNome(rs.getString("nome"));
			cliente.setEndereco(rs.getString("endereco"));
			cliente.setEmail(rs.getString("email"));
			clientes.add(cliente);
		}
		rs.close();
		ps.close();
		return clientes;	
	}