Im trying to connect my databse on java, What might be the cause of error?

What i want is to get data from my database which i saved on my workspace folder, i also intalled the latest sqlite-jdbc jar...

i followed the tuts here http://ift.tt/O2HIwP here is my code..

      import java.sql.*;
      import javax.swing.*;

 public class sqliteConnection {
Connection conn = null;

public static Connection dbConnector(){
    try{
        Class.forName("org.sqlite.JDBC");
        Connection conn = DriverManager.getConnection("jdbc:sqlite:TR.sqlite","","");
        JOptionPane.showMessageDialog(null, "Connection Successful");
        Statement stmt = null;

        stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM admin_tbl;");
        while ( rs.next() ) {
             int id = rs.getInt("admin_id");
             String  user = rs.getString("username");
             String  pass = rs.getString("password");
             System.out.println( "ID = " + id );
             System.out.println( "NAME = " + user );
             System.out.println( "ADDRESS = " + pass );
             System.out.println();
          }
          rs.close();
          stmt.close();
        return conn;
    }catch(Exception e){
        JOptionPane.showMessageDialog(null, e);
        System.out.println(e);
        return null;
    }
}

}

First i get the result of "Connection Successful" then I get this error...

 java.sql.SQLException: [SQLITE_ERROR] SQL error or missing database (no such table: admin_tbl)

im new in java so please bare with me... ^^v been googling for few hours and still doesn't get any answer,