Java Connecting with multiple Databases, getting Data and writing data to a new database

Code
package Databse;

import java.sql.*;

import java.util.HashMap;

import java.util.Vector;

import java.util.Map;



/**

 *

 * @autho

 */

public class Join

{

  public static void main( String args[] )

  {

    Connection c;

    Statement stmt;

    try 

    {

      Class.forName("org.sqlite.JDBC");

      c = DriverManager.getConnection("jdbc:sqlite:test.db");

      c.setAutoCommit(false);

      System.out.println("Opened database successfully");



      stmt = c.createStatement();



    Vector<HashMap<String, String>> alleDaten = new Vector<HashMap<String, String>>();



      try (ResultSet rs = stmt.executeQuery( "SELECT * FROM FILE;" ))

      {

      while ( rs.next() ) 

      {

            int id = rs.getInt("id");

            String  name = rs.getString("name");

            String extension = rs.getString("extension");

            String  path  = rs.getString("path");

            String timeStamp = rs.getString("timeStamp");



            HashMap<String, String> datensatz = new HashMap<String, String>();

            datensatz.put("name", name);

            datensatz.put("extension", extension);

            datensatz.put("path", path );

            datensatz.put("timestamp", timeStamp);                

        alleDaten.add(datensatz);            



      } 

      }  

      stmt.close();

      c.close();



    } 

    catch ( ClassNotFoundException | SQLException e )

    {

      System.err.println( e.getClass().getName() + ": " + e.getMessage() );

      System.exit(0);

    }

    System.out.println("Operation done successfully");

  }