Estructura MVC
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ProyectoVentaBoletos
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.cip</groupId>
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<artifactId>ProyectoVentaBoletos</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>jar</packaging>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>20</maven.compiler.source>
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<maven.compiler.target>20</maven.compiler.target>
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<exec.mainClass>com.cip.proyectoventaboletos.ProyectoVentaBoletos</exec.mainClass>
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</properties>
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<dependencies>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>8.0.33</version>
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</dependency>
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<dependency>
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<groupId>com.formdev</groupId>
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<artifactId>flatlaf</artifactId>
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<version>3.4.1</version>
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</dependency>
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</dependencies>
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</project>
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package controlador;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import java.sql.Connection;
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public class ConexionSingleton {
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private static final String URL = "jdbc:mysql://localhost:3306/###";
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private static final String USERNAME = "root";
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private static final String PASSWORD = "P@ssw0rd";
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private static Connection CONEXION = null;
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private ConexionSingleton(){
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}
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public static Connection getInstance() {
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if(CONEXION == null){
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try{
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Class.forName("com.mysql.cj.jdbc.Driver");
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CONEXION = DriverManager.getConnection(URL, USERNAME, PASSWORD);
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} catch(ClassNotFoundException e) {
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System.out.println("ConexionSingleton: error Driver no encontrado. " + e.getMessage());
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} catch(SQLException e) {
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System.out.println("ConexionSingleton: error no se pudo establecer la conexión. " + e.getMessage());
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}
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}
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System.out.println("ConexionSingleton: conexión exitosa.");
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return CONEXION;
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}
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public static void closeConnection() {
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if (CONEXION != null) {
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try {
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CONEXION.close();
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CONEXION = null;
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System.out.println("ConexionSingleton: conexión cerrada.");
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} catch (SQLException e) {
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System.out.println("ConexionSingleton: error al cerrar la conexión: " + e.getMessage());
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}
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}
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}
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}
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package modelo;
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public class Asiento {
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}
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package modelo;
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public class Boleto {
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}
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package modelo;
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public class Evento {
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}
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package modelo;
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public class Reporte {
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}
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package modelo;
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public class Venta {
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}
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package vista;
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public class Sala {
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}
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