binary data manipulation

package jdbc.test;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class BinaryManipulation {

 public static int writeBinaryData() throws SQLException,
   ClassNotFoundException, FileNotFoundException {
  String sql = "insert into tabe_date_text_blob (image) values (?)";
  PreparedStatement ps = JdbcMySqlUtil.getInstance().getPrepareStatement(
    sql);
  File file = new File("resource/Earth.bmp");
  InputStream is = new BufferedInputStream(new FileInputStream(file));
  ps.setBinaryStream(1, is, file.length());
  int ret = ps.executeUpdate();
  JdbcMySqlUtil.free(null, ps, ps.getConnection());
  return ret ;
 }
 
 public static void readBinaryData() throws SQLException, ClassNotFoundException, IOException{
  String sql = "select image from tabe_date_text_blob where id = 3";
  PreparedStatement ps = JdbcMySqlUtil.getInstance().getPrepareStatement(
    sql);
  ResultSet rs = ps.executeQuery();
  File file = new File("resource/Earth2.bmp");
  
  InputStream is = null;
  while (rs.next())
   is = rs.getBinaryStream(1);
  
  OutputStream os = new BufferedOutputStream(new FileOutputStream(file));
  byte [] buf = new byte[1024];
  
  int i = 0 ;
  while ((i = is.read(buf)) > 0 )
   os.write(buf, 0, i);
  
  JdbcMySqlUtil.free(rs, ps, ps.getConnection());
 }

 public static void main(String[] args) throws ClassNotFoundException,
   SQLException, IOException {

  //print(writeBinaryData());
  readBinaryData() ;
 }

 private static void print(Object obj) {
  System.out.println(obj);
 }

}