abrir y crear archivos planos

codigo generado con el ide netbeans 6.1

/*
 * Archivos.java
 *
 * Created on 8 de julio de 2008, 01:34 PM
 */

package calculadora;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

/**
 *
 * @author  Owner
 */
public class Archivos extends javax.swing.JFrame {

    /** Creates new form Archivos */
    public Archivos() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // //GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        btn = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        area = new javax.swing.JTextArea();
        btng = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new java.awt.Color(0, 0, 0));

        btn.setText("BTN");
        btn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnActionPerformed(evt);
            }
        });

        area.setColumns(20);
        area.setRows(5);
        jScrollPane1.setViewportView(area);

        btng.setText("BTN2");
        btng.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btngActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
                        .addGap(27, 27, 27)
                        .addComponent(jScrollPane1))
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
                        .addGap(35, 35, 35)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(btng, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(btn, javax.swing.GroupLayout.DEFAULT_SIZE, 344, Short.MAX_VALUE))))
                .addContainerGap(21, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(21, 21, 21)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(30, 30, 30)
                .addComponent(btn)
                .addGap(18, 18, 18)
                .addComponent(btng)
                .addContainerGap(50, Short.MAX_VALUE))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

        pack();
    }// //GEN-END:initComponents

private void btnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnActionPerformed
    area.setText("");
    JFileChooser fileChooser = new JFileChooser();
  int seleccion=fileChooser.showOpenDialog(area);
 
      if (seleccion == JFileChooser.APPROVE_OPTION){
            try {
         File fichero = fileChooser.getSelectedFile();
         
             BufferedReader reader = new BufferedReader(new FileReader(fichero));    
             String linea=""; 
             linea = reader.readLine();
          while (linea != null){
                try {
                     area.append(linea+"\n");
                     linea = reader.readLine();
                 
                 } catch (IOException ex) {
                       JOptionPane.showMessageDialog(null,"caja linea");
                 }
          }
      
          }catch(IOException ex) {
              JOptionPane.showMessageDialog(null,"no lee linea");
          }      
      }
    if(seleccion==JFileChooser.CANCEL_OPTION){
     
      }  
    
  
  // TODO add your handling code here:
}//GEN-LAST:event_btnActionPerformed

private void btngActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btngActionPerformed

    String doc=".doc";
    JFileChooser fileChooser = new JFileChooser();
    int seleccion = fileChooser.showSaveDialog(area);
    if (seleccion == JFileChooser.APPROVE_OPTION)
    {
   File fichero = fileChooser.getSelectedFile();
            try {
                fichero.createTempFile("file1", doc, fichero);
            } catch (IOException ex) {
                Logger.getLogger(Archivos.class.getName()).log(Level.SEVERE, null, ex);
            }
    PrintWriter writer;
            try {
                writer = new PrintWriter(fichero);
                writer.format(doc, area);
                writer.print(area.getText());
                writer.close();
            } catch (FileNotFoundException ex) {
                JOptionPane.showMessageDialog(null,"erro");
            }
    
    }
    if(seleccion==fileChooser.CANCEL_OPTION){}
    // TODO add your handling code here:
}//GEN-LAST:event_btngActionPerformed

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Archivos().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTextArea area;
    private javax.swing.JButton btn;
    private javax.swing.JButton btng;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    // End of variables declaration//GEN-END:variables

}

Conexion Base de Datos en MySQL

Bueno estq es la clase que se utiliza para conectar una base de datos creado en MySQL (Como dato la base ya debe de estar creada)

package Control;
import javax.swing.*;
import java.sql.*;
import java.util.*;
import javax.sql.DataSource;


public class DataBase {
       
     public Connection con = null;
 
   public Connection getConexion() throws SQLException{
     
       String driver = "com.mysql.jdbc.Driver";
       String url = "jdbc:mysql://localhost/nombre de la base de datos";//en caso de q la base sea local
//   String url = "jdbc:mysql://"direccion ip del servidor": "puerto de MySql"/"nombre de la base de datos""; // en caso de ser cliente servidor
       String user = "root";// es el usuario default de MySQL
       String password="password de MySQL";
          
     
       try{
         Class.forName(driver);
         con = DriverManager.getConnection(url,user,password);
   }catch(ClassNotFoundException ex){
           JOptionPane.showMessageDialog(null,"¡No se encontro el driver jdbc instalado en el sistema!\n\n"+ex.getMessage(),"Error de conexion",JOptionPane.ERROR_MESSAGE);          
               }

   return con;
   }
     
 
   public static void main(String []arg){
       DataBase k = new DataBase();      
       try{
           JOptionPane.showMessageDialog(null,k.getConexion());
       }catch(SQLException ex){
           JOptionPane.showMessageDialog(null,ex.getMessage());          
       }
   }
   }