no funciona

.classpath

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-16">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="lib" path="C:/Users/Vesprada/Downloads/mysql-connector-java-8.0.20/mysql-connector-java-8.0.20/mysql-connector-java-8.0.20.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Prueba_BaseDeDatos</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,14 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=16
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=16
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=16

src/Coche.java

@@ -0,0 +1,86 @@
+import java.util.ArrayList;
+
+public class Coche {
+
+	private String matricula;
+	private String marca;
+	private String modelo;
+	private String color;
+	private double km;
+	static ArrayList<Coche> arr = new ArrayList<Coche>();
+	//public static String[] marca = {"Ferrari", "Ford", "Lamborghini", "Audi", "Seat", "Mercedes", "Volkswagen"};
+	//public static String[] modelo = {"3P", "AX", "4P", "8P", "AX"};
+	//public static String[] color = {"Rojo", "Blanco", "Azul", "Verde", "Negro"};
+	
+	
+	public Coche(String matricula, String marca, String modelo, String color, double km) {
+		this.matricula = matricula;
+		this.marca = marca;
+		this.modelo = modelo;
+		this.color = color;
+		this.km = km;
+	}
+
+	@Override
+	public String toString() {
+		return matricula + " " + marca + " " + modelo + " " + color + " " + km;
+	}
+	
+	public String modificar(String matricula, String marca, String modelo, String color, int km) {
+		this.matricula=matricula;
+		this.marca=marca;
+		this.modelo=modelo;
+		this.color=color;
+		this.km=km;
+		return "\n";
+	}
+
+	public String datos() {
+		return "'" + this.matricula + "','" +
+				this.marca + "','" + 
+				this.modelo + "','" +
+				this.color + "'," +
+				this.km + "\n";
+	}
+	
+	public String getMatricula() {
+		return matricula;
+	}
+
+	public void setMatricula(String matricula) {
+		this.matricula = matricula;
+	}
+
+	public String getMarca() {
+		return marca;
+	}
+
+	public void setMarca(String marca) {
+		this.marca = marca;
+	}
+
+	public String getModelo() {
+		return modelo;
+	}
+
+	public void setModelo(String modelo) {
+		this.modelo = modelo;
+	}
+
+	public String getColor() {
+		return color;
+	}
+	
+	public void setColor(String color) {
+		this.color = color;
+	}
+
+	public double getKm() {
+		return km;
+	}
+
+	public void setKm(int km) {
+		this.km = km;
+	}
+	
+}

src/Conexion.java

@@ -0,0 +1,12 @@
+import java.sql.Connection;
+
+public class Conexion {
+	
+	static Connection con=null;
+	static String url = "jdbc:mysql://localhost:3306/";
+	static String db = "parque";
+	static String driver = "com.mysql.cj.jdbc.Driver";
+	static String user = "root";
+	static String pass = "";
+
+}

src/EjemploJDBC.java

@@ -0,0 +1,39 @@
+import java.sql.*;
+
+public class EjemploJDBC {
+
+	public static void main(String[] args) {
+
+		System.out.println("Obteniendo registros de una tabla....");
+		
+		System.out.println("\nMATRICULA       MARCA     	MODELO      	COLOR       	KM");
+		
+		try {
+			Class.forName(Conexion.driver);
+			Conexion.con=DriverManager.getConnection(Conexion.url+Conexion.db, Conexion.user, Conexion.pass);
+			try {
+				Statement st = Conexion.con.createStatement();
+				ResultSet res = st.executeQuery("SELECT * FROM coche");
+				System.out.println("");
+				while(res.next()) {
+					String matricula = res.getString("matricula");
+					String marca = res.getString("marca");
+					String modelo = res.getString("modelo");
+					String color = res.getString("color");
+					double km=res.getDouble("km");
+					
+					System.out.println(matricula + "\t\t" + marca + "\t\t" + modelo + "\t\t" + color + "\t\t" + km);
+				}
+				
+			}catch (Exception e) {
+				e.printStackTrace();
+			}
+			Conexion.con.close();
+		}catch (Exception e) {
+			e.printStackTrace();
+		}
+		
+
+	}
+
+}

src/Ventana.java

@@ -0,0 +1,130 @@
+import java.awt.BorderLayout;
+import java.awt.EventQueue;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+import javax.swing.JScrollPane;
+import javax.swing.JTable;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.JButton;
+import java.awt.event.ActionListener;
+import java.awt.event.ActionEvent;
+
+public class Ventana extends JFrame {
+
+	private JPanel contentPane;
+	static JTable table;
+	
+
+	public static void main(String[] args) {
+		EventQueue.invokeLater(new Runnable() {
+			public void run() {
+				try {
+					Ventana frame = new Ventana();
+					frame.setVisible(true);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		});
+	}
+
+	public Ventana() {
+		setTitle("Tabla");
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		setBounds(100, 100, 450, 300);
+		contentPane = new JPanel();
+		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
+		setContentPane(contentPane);
+		contentPane.setLayout(null);
+		
+		JPanel panel = new JPanel();
+		panel.setBounds(0, 0, 434, 261);
+		contentPane.add(panel);
+		panel.setLayout(null);
+		
+		JScrollPane scrollPane = new JScrollPane();
+		scrollPane.setBounds(10, 50, 414, 159);
+		panel.add(scrollPane);
+		
+		table = new JTable();
+		table.setModel(new DefaultTableModel(
+			new Object[][] {
+			},
+			new String[] {
+				"Matricula", "Marca", "Modelo", "Color", "Km"
+			}
+		));
+		scrollPane.setViewportView(table);
+		
+		JButton btnCrearCoche = new JButton("Crear Coche");
+		btnCrearCoche.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Ventana2 frame = new Ventana2();
+				frame.setVisible(true);
+				dispose();
+			}
+		});
+		btnCrearCoche.setBounds(297, 11, 127, 23);
+		panel.add(btnCrearCoche);
+		
+		Coche.arr.clear();
+		
+		carga_Array();
+		
+		int numCols = table.getModel().getColumnCount();
+		
+		Object[] fila = new Object[numCols];
+		
+		for(int i=0; i<Coche.arr.size();i++) {
+			//fila[0] = i;
+			fila[0]= Coche.arr.get(i).getMatricula();
+			fila[1]= Coche.arr.get(i).getMarca();
+			fila[2]= Coche.arr.get(i).getModelo();
+			fila[3]= Coche.arr.get(i).getColor();
+			fila[4]= Coche.arr.get(i).getKm();
+			((DefaultTableModel) table.getModel()).addRow(fila);
+		}
+	}
+	
+	public static void carga_Array() {
+
+		try {
+			Class.forName(Conexion.driver);
+			Conexion.con=DriverManager.getConnection(Conexion.url + Conexion.db, Conexion.user, Conexion.pass);
+				
+			Statement st = Conexion.con.createStatement();
+				
+			//Coche c1 = new Coche("333CCC","Ferrari","F40","Rojo",99999);
+			//st.executeUpdate("INSERT INTO COCHE VALUES(" + c1.datos() + ")");
+			
+			ResultSet res = st.executeQuery("SELECT * FROM coche");
+			
+			while(res.next()) {
+				String matricula = res.getString("matricula");
+				String marca = res.getString("marca");
+				String modelo = res.getString("modelo");
+				String color = res.getString("color");
+				double km=res.getDouble("km");
+				
+				//System.out.println(matricula + "\t\t" + marca + "\t\t" + modelo + "\t\t" + color + "\t\t" + km);
+				Coche c = new Coche(matricula, marca, modelo, color, km);
+				Coche.arr.add(c);
+				
+			}
+			Conexion.con.close();
+		}catch (ClassNotFoundException e) {
+			e.printStackTrace();
+		}catch (SQLException e) {
+			e.printStackTrace();
+		}
+		
+		
+	}
+}

src/Ventana2.java

@@ -0,0 +1,276 @@
+import java.awt.BorderLayout;
+import java.awt.EventQueue;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.JTextArea;
+import javax.swing.border.EmptyBorder;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.JLabel;
+import javax.swing.JTextField;
+import javax.swing.JComboBox;
+import javax.swing.DefaultComboBoxModel;
+import javax.swing.JButton;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.awt.event.WindowListener;
+import java.io.BufferedInputStream;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.awt.event.ActionEvent;
+import java.awt.Color;
+
+public class Ventana2 extends JFrame {
+
+	private JPanel contentPane;
+	static JTextField casilla;
+	static JButton boton_FabricaCoche;
+	static JComboBox comboBox_Marca;
+	static JComboBox comboBox_Modelo;
+	static JComboBox comboBox_Color;
+	static JTextField textKm;
+	static JLabel lblTexto;
+	static JButton btnModificar;
+	
+	static ArrayList<Coche> arr = new ArrayList<Coche>();
+	static ArrayList<Integer> numeroCoches = new ArrayList<Integer>(5);
+
+	public static void main(String[] args) {
+		EventQueue.invokeLater(new Runnable() {
+			public void run() {
+				try {
+					Ventana2 frame = new Ventana2();
+					frame.setVisible(true);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		});
+	}
+
+	public Ventana2() {
+		addWindowListener((WindowListener) new WindowAdapter() {
+			
+			@Override
+			public void windowClosing(WindowEvent e) {
+				
+				//Ventana vmenu = new Ventana();
+				//vmenu.setVisible(true);
+				
+			}
+		});
+		setTitle("CREACION DE COCHE");
+		setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
+		setBounds(100, 100, 450, 332);
+		contentPane = new JPanel();
+		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
+		setContentPane(contentPane);
+		contentPane.setLayout(null);
+		
+		JLabel lblNewLabel = new JLabel("Matricula");
+		lblNewLabel.setBounds(27, 97, 63, 14);
+		contentPane.add(lblNewLabel);
+		
+		casilla = new JTextField();
+		casilla.setColumns(10);
+		casilla.setBounds(100, 94, 113, 20);
+		contentPane.add(casilla);
+		
+		JLabel lblNewLabel_1 = new JLabel("Marca");
+		lblNewLabel_1.setBounds(27, 129, 46, 14);
+		contentPane.add(lblNewLabel_1);
+		
+		JLabel lblNewLabel_2 = new JLabel("Modelo");
+		lblNewLabel_2.setBounds(27, 162, 46, 14);
+		contentPane.add(lblNewLabel_2);
+		
+		JLabel lblNewLabel_3 = new JLabel("Color");
+		lblNewLabel_3.setBounds(27, 195, 46, 14);
+		contentPane.add(lblNewLabel_3);
+		
+		comboBox_Marca = new JComboBox();
+		comboBox_Marca.setSelectedIndex(-1);
+		comboBox_Marca.setBounds(100, 125, 113, 22);
+		contentPane.add(comboBox_Marca);
+		comboBox_Marca.setModel(new DefaultComboBoxModel(new String[] {"Ferrari", "Ford", "Lamborghini", "Audi", "Seat", "Mercedes", "Volkswagen"}));
+		comboBox_Marca.setSelectedIndex(-1);
+		
+		comboBox_Modelo = new JComboBox();
+		comboBox_Modelo.setSelectedIndex(-1);
+		comboBox_Modelo.setBounds(100, 158, 113, 22);
+		contentPane.add(comboBox_Modelo);
+		comboBox_Modelo.setModel(new DefaultComboBoxModel(new String[] {"3P", "AX", "4P", "8P", "AX"}));
+		comboBox_Modelo.setSelectedIndex(-1);
+		
+		comboBox_Color = new JComboBox();
+		comboBox_Color.setSelectedIndex(-1);
+		comboBox_Color.setBounds(100, 191, 113, 22);
+		contentPane.add(comboBox_Color);
+		comboBox_Color.setModel(new DefaultComboBoxModel(new String[] {"Rojo", "Blanco", "Azul", "Verde", "Negro"}));
+		comboBox_Color.setSelectedIndex(-1);
+		
+		JButton boton_Aleatorio = new JButton("Random");
+		boton_Aleatorio.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				casilla.setText(matAleatoria());
+			}
+		});
+		boton_Aleatorio.setBounds(243, 93, 84, 23);
+		contentPane.add(boton_Aleatorio);
+		
+		JPanel panel = new JPanel();
+		panel.setBounds(0, 0, 434, 293);
+		contentPane.add(panel);
+		panel.setLayout(null);
+		
+		JLabel lblNewLabel_3_1 = new JLabel("Kilometros");
+		lblNewLabel_3_1.setBounds(23, 227, 70, 14);
+		panel.add(lblNewLabel_3_1);
+		
+		textKm = new JTextField();
+		textKm.setColumns(10);
+		textKm.setBounds(103, 224, 113, 20);
+		panel.add(textKm);
+		
+		boton_FabricaCoche = new JButton("Fabrica coche");
+		boton_FabricaCoche.setBackground(Color.GRAY);
+		boton_FabricaCoche.setBounds(246, 166, 178, 38);
+		panel.add(boton_FabricaCoche);
+		
+		JButton botonRandomKm = new JButton("Random km");
+		botonRandomKm.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String n = "";
+				n = n + ((int)Math.floor(Math.random()*(10000-0+1) + 0));
+				textKm.setText(n);
+			}
+		});
+		botonRandomKm.setBounds(246, 223, 107, 23);
+		panel.add(botonRandomKm);
+		
+		lblTexto = new JLabel("");
+		lblTexto.setBounds(32, 268, 392, 14);
+		panel.add(lblTexto);
+		
+		JButton boton_AleatorioAll = new JButton("Random All");
+		boton_AleatorioAll.setBounds(246, 132, 107, 23);
+		panel.add(boton_AleatorioAll);
+		
+		btnModificar = new JButton("Modificar");
+		btnModificar.setEnabled(false);
+		btnModificar.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				
+				String Marca = (String)comboBox_Marca.getSelectedItem();
+				String Modelo = (String)comboBox_Modelo.getSelectedItem();
+				String Color = (String)comboBox_Color.getSelectedItem();
+				int Km = Integer.parseInt(textKm.getText());
+					
+				Coche c = arr.get(Ventana.table.getSelectedRow());
+				c.modificar(casilla.getText(), Marca, Modelo, Color, Km);
+				
+			}
+		});
+		btnModificar.setBounds(335, 93, 89, 23);
+		panel.add(btnModificar);
+		
+		JButton botonListaCoches = new JButton("MOSTRAR TABLA");
+		botonListaCoches.setBounds(138, 21, 168, 47);
+		panel.add(botonListaCoches);
+		botonListaCoches.setForeground(Color.WHITE);
+		botonListaCoches.setBackground(Color.DARK_GRAY);
+		botonListaCoches.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Ventana frame = new Ventana();
+				frame.setVisible(true);
+				//Navegador.arr.add(frame);
+				
+				dispose();
+			}
+		});
+		
+		boton_AleatorioAll.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				int random1=(int)(Math.random()*(6-0+1)+0);
+				int random2=(int)(Math.random()*(4-0+1)+0);
+				int random3=(int)(Math.random()*(4-0+1)+0);
+				
+				comboBox_Marca.setSelectedIndex(random1);
+				comboBox_Modelo.setSelectedIndex(random2);
+				comboBox_Color.setSelectedIndex(random3);
+				
+				casilla.setText(matAleatoria());
+				
+				String n = "";
+				n = n + ((int)Math.floor(Math.random()*(10000-0+1) + 0));
+				textKm.setText(n);
+			}
+		});
+		boton_FabricaCoche.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				
+				String Marca = (String)comboBox_Marca.getSelectedItem();
+				String Modelo = (String)comboBox_Modelo.getSelectedItem();
+				String Color = (String)comboBox_Color.getSelectedItem();
+				int Km = Integer.parseInt(textKm.getText());
+				
+				lblTexto.setVisible(true);
+				lblTexto.setText("Se ha fabricado un " + Marca);
+				
+				Coche c = new Coche(casilla.getText(), Marca, Modelo, Color, Km);
+				arr.add(c);
+				
+				guarda_coche(c);
+				
+			}
+		});
+	}
+	
+	public static void guarda_coche(Coche c) {
+		
+		try {
+			Class.forName(Conexion.driver);
+			Conexion.con=DriverManager.getConnection(Conexion.url + Conexion.db, Conexion.user, Conexion.pass);
+				
+			Statement st = Conexion.con.createStatement();
+			
+			st.executeUpdate("INSERT INTO COCHE VALUES(" + c.datos() + ")");
+			
+			Conexion.con.close();
+		}catch (ClassNotFoundException e1) {
+			e1.printStackTrace();
+		}catch (SQLException e1) {
+			e1.printStackTrace();
+		}
+		
+	}
+	
+	
+	public static String matAleatoria() {
+		String matricula = "";
+		String letras =  "BCDFGHJKLMNPQRSTVWXYZ";
+		
+		for(int i=0; i<4; i++) {
+			matricula = matricula + ((int)Math.floor(Math.random()*(9-0+1) + 0));
+		}
+		
+		matricula = matricula + "-";
+		
+		for(int i=0;i<3; i++) {
+			matricula = matricula + "" + letras.charAt(((int)Math.floor(Math.random()*(20-0+1) + 0)));
+		}
+		
+		return matricula;
+	}
+}