How to extract Image(.tif) file from .img file.

/* Creating java source code */ 

CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "RetString" as import java.io.ByteArrayOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.lang.*; 
import oracle.jdbc.*; 
import oracle.jdbc2.*; 
import oracle.sql.*; 
import java.sql.*; 
import java.util.*; 
import java.math.*; 

public class Oscar { 

public static void writeImageFromIMG(String readFilePath, String voffSet, String vlength, String fileName, String writeFilePath) throws Exception { 
try { 
ByteArrayOutputStream ous = null; 
InputStream ios = null; 
int offSet =Integer.parseInt(voffSet); 
int length =Integer.parseInt(vlength); 
try { 
File file = new File(readFilePath); 
byte[] buffer = new byte[(int) file.length()]; 
ous = new ByteArrayOutputStream(); 
ios = new FileInputStream(file); 
int actualByteLengthForRead = 0; 
while ((actualByteLengthForRead = ios.read(buffer)) != -1) { 
ous.write(buffer, offSet, length); 
} 
} finally { 
try { 
if (ous != null) { 
ous.close(); 
} 
} catch (IOException e) { 
} 

try { 
if (ios != null) { 
ios.close(); 
} 
} catch (IOException e) { 
} 
} 

FileOutputStream fos = new FileOutputStream(writeFilePath + fileName + ".tif"); 
fos.write(ous.toByteArray()); 
} catch (IOException ioe) { 
ioe.printStackTrace(); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
} 


} 


/************* Creating Oracle Procedure *********************/ 

CREATE OR REPLACE PROCEDURE MICR.DPR_EXTRACT_BUNDLE_IMAGE 
(P_readFilePath IN VARCHAR2, 
P_offSet IN VARCHAR2, 
P_length IN VARCHAR2, 
P_fileName IN VARCHAR2, 
P_writeFilePath IN VARCHAR2 
) 
AS LANGUAGE JAVA 
NAME 'Oscar.writeImageFromIMG(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String)'; 
/ 

/************** Using This ************************/ 

begin 
FOR i IN (SELECT '22479581_Front' data_no, '63197' lengthofimagedata, 
'0' offsetofimagedata, 0 front_rear 
FROM DUAL 
UNION ALL 
SELECT '22479581_Rear' data_no, '8541' lengthofimagedata, 
'63197' offsetofimagedata, 1 front_rear 
FROM DUAL) loop 

DPR_EXTRACT_BUNDLE_IMAGE('/u01/XML/ICE/ICE-PBM-W210-R2386-D20130708-B260.img',i.offsetofimagedata,i.lengthofimagedata,i.data_no,'/u01/XML/ICE/'); 
end loop; 
end; 

/*********************************************************************/