File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Java in General and the fly likes convert byte array to string index by index Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Java in General
Bookmark "convert byte array to string index by index" Watch "convert byte array to string index by index" New topic
Author

convert byte array to string index by index

Sana Bokhari
Greenhorn

Joined: Jan 12, 2012
Posts: 7
hey i am reading a file byte by byte..., then storing it in a byte array and lastly converting it to a string... but i want to convert values on every index of the byte array individually..... i.e. what ever bytes i have on index one should be converted to string.....the problem here is, i convert the whole byte array into a string at one time. plus i am concatenating the bytes in "data" in string form which means even if i convert "data" back to string i will let get the same result i.e. the bytes .. rather then the data in readable form...
Please help




Seetharaman Venkatasamy
Ranch Hand

Joined: Jan 28, 2008
Posts: 5575

Welcome to JavaRanch

Moving to Java in General.

Winston Gutkowski
Bartender

Joined: Mar 17, 2011
Posts: 8427
    
  23

Sana Bokhari wrote:hey i am reading a file byte by byte..., then storing it in a byte array and lastly converting it to a string...

First mistake. Bytes and characters are not the same thing. They can be converted; though this is usually done by using either
(a) a BufferedReader, or
(b) one of the String constructors that takes a byte array.
but this really only works if what you are reading in is text. If it's binary, you really DON'T want a String.

but i want to convert values on every index of the byte array individually..... i.e. what ever bytes i have on index one should be converted to string.....

And here's where my confusion starts. Are you saying that if you read in a byte that contains an ascii 'a', you want it to print out as '97'?
Because that's what your code will do.

Furthermore, if you simply concatenate all those numbers together, you will never be able to get your original values back, because the strings produced may be of different lengths. You could zero-fill them to some uniform length, but it seems like an awful lot of "noise code" to me.

My suggestion is this: back up and explain exactly what it is you're trying to do (NOT what you've done) and why. That might help us suggest a solution.

Also: provide some examples of what you want, because at the moment your requirements mystify me.

Winston


Isn't it funny how there's always time and money enough to do it WRONG?
Articles by Winston can be found here
Sana Bokhari
Greenhorn

Joined: Jan 12, 2012
Posts: 7
Winston Gutkowski wrote:
Sana Bokhari wrote:hey i am reading a file byte by byte..., then storing it in a byte array and lastly converting it to a string...

First mistake. Bytes and characters are not the same thing. They can be converted; though this is usually done by using either
(a) a BufferedReader, or
(b) one of the String constructors that takes a byte array.
but this really only works if what you are reading in is text. If it's binary, you really DON'T want a String.

but i want to convert values on every index of the byte array individually..... i.e. what ever bytes i have on index one should be converted to string.....

And here's where my confusion starts. Are you saying that if you read in a byte that contains an ascii 'a', you want it to print out as '97'?
Because that's what your code will do.

Furthermore, if you simply concatenate all those numbers together, you will never be able to get your original values back, because the strings produced may be of different lengths. You could zero-fill them to some uniform length, but it seems like an awful lot of "noise code" to me.

My suggestion is this: back up and explain exactly what it is you're trying to do (NOT what you've done) and why. That might help us suggest a solution.

Also: provide some examples of what you want, because at the moment your requirements mystify me.

Winston






hey thank you for explaing it ....and i got it right now
Winston Gutkowski
Bartender

Joined: Mar 17, 2011
Posts: 8427
    
  23

Sana Bokhari wrote:hey thank you for explaing it ....and i got it right now

You're welcome.

Winston
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: convert byte array to string index by index