Problems in byte conversion.

Question

i have a bytestream. if i convert this to string and then again generated the bytes from string, though the length of bytes are same the values are different.
Detailed Explanation.
i have a bytestream of an image.
and if i write this bytes to a text file using fileoutputstream and manually change the extension from.txt to.tiff i can see the image correctly.
Now if i convert this bytestream to string
and then again back to bytestream and write to a text file and change the extension as before, its giving a different picuture???...
what could be the reason?. is there a better way fo byte conversions than i used
i'll attach my code also.
FileOutputStream fos=new FileOutputStream("C:\\amma.txt");                              
                              System.out.println("Length before: " + bytesStream.length);                                   
                              for(int lm=0;lm<bytesStream.length;lm++)
                                   fos.write(bytesStream[lm]);
                              String s=new String(bytesStream);
                              byte[] b=s.getBytes();                              
                              System.out.println("Length After: " + b.length);                                                            
                              fos.close();
                              FileOutputStream fos2=new FileOutputStream("C:\\amma2.txt");                                                                           
                              for(int lm=0;lm<b.length;lm++)
                                   fos2.write(b[lm]);
                              fos2.close();                              
                         catch(Exception ex1)
                              ex1.printStackTrace();
                         }

Answer 1

I feel rather certain that this question relates
somehow to your
one from earlier today
http://forum.java.sun.com/thread.jspa?threadID=773992
yes u r rite.
i want to upload file...
i'm able to recover half of the image from this
conversion.
but its not that good.
i want to know is there a better way of converting
bytes to string.
'coz i can only assign string values, on webcontrols
like textbox.
and only the value in a webcontrol be retrived from
my .NET server side code.
if i could successfully convert the bytes to string
then the .NET will get the string and do the
reverse.
pls pls pls...any comments???You are doomed. This will never work. Never ever.