o path de onde esta o seu JDBC do MySql. Abaixo segue uma imagem que exemplifica isso:Tendo nosso jar adicionado ao projeto iremos agora criar a classe "Conexao.java" dentro do pacote "jdbc". Clique com o botao direito do mouse em cima do pacote "jdbc" e va na opcao NEW - CLASS e coloque o nome de "Conexao". A classe conexao tera o seguinte codigo:package jdbc;import java.sql.Connection;import java.sql.DriverManager;import java.sql.Statement;import java.sql.ResultSet;public class Conexao{ public Conexao(String classPath, String url, String user, String password) { cn = null; stm = null; rs = null; tabela = null; if(classPath != null && url != null && user != null && password != null) { try { Class.forName(classPath); cn = DriverManager.getConnection(url, user, password); } catch(Exception e) { System.out.println("Erro ao abrir a conexao:\n" + e.getMessage()); e.printStackTrace(); cn = null; } } } private Connection cn; private Statement stm; private ResultSet rs; private String[][] tabela; @SuppressWarnings("finally") public boolean createConnection(String classPath, String url, String user, String password) { boolean retorno = false; try { Class.forName(classPath); cn = DriverManager.getConnection(url, user, password); } catch(Exception e) { System.out.println("Erro ao abrir a conexao:\n" + e.getMessage()); e.printStackTrace(); cn = null; } finally { return retorno; } } @SuppressWarnings("finally") public ResultSet select(StringBuilder sql) { try { if(cn != null) { stm = cn.createStatement(); rs = stm.executeQuery(sql.toString()); stm.close(); } else { rs = null; } } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); } finally { stm = null; return rs; } } @SuppressWarnings("finally") public String[][] select(String sql) { try { if(cn != null) { stm = cn.createStatement(); rs = stm.executeQuery(sql); int qtdColuna = rs.getMetaData().getColumnCount(); rs.last(); int qtdLinha = rs.getRow(); rs.beforeFirst(); tabela = new String[qtdLinha][qtdColuna]; int i = 0; while (rs.next()) { for (int j = 0; j < qtdColuna; j++) { tabela[i][j] = rs.getString(j + 1); } i++; } rs.close(); stm.close(); } else { tabela = null; } } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); tabela = null; } finally { rs = null; stm = null; return tabela; } } @SuppressWarnings("finally") public boolean insert(String sql) { boolean retorno = false; try { if(cn != null) { stm = cn.createStatement(); stm.execute(sql); stm.close(); retorno = true; } } catch(Exception e) { System.out.println("Erro ao inserir:\n" + e.getMessage()); e.printStackTrace(); } finally { stm = null; return retorno; } } @SuppressWarnings("finally") public boolean delete(String sql) { boolean retorno = false; try { if(cn != null) { stm = cn.createStatement(); stm.execute(sql); stm.close(); retorno = true; } } catch(Exception e) { System.out.println("Erro ao deletar:\n" + e.getMessage()); e.printStackTrace(); } finally { stm = null; return retorno; } } @SuppressWarnings("finally") public boolean update(String sql) { boolean retorno = false; try { if(cn != null) { stm = cn.createStatement(); stm.executeUpdate(sql); stm.close(); retorno = true; } } catch(Exception e) { System.out.println("Erro ao atualizar:\n" + e.getMessage()); e.printStackTrace(); } finally { stm = null; return retorno; } } @SuppressWarnings("finally") public boolean closeConnection() { boolean retorno = false; try { cn.close(); cn = null; retorno = true; } catch(Exception e) { System.out.println("Erro ao fechar a conexao:\n" + e.getMessage()); e.printStackTrace(); cn = null; } finally { return retorno; } }}Agora vamos criar a classe Main.java no pacote "principal". Clique com o botao