Reading File into String when file contains null characters

Can anyone let me know how to read a file into a string when the file contains null characters inside of it. (The file data is encrypted.)

The piece of code that works is this:

                File file = new File(fileName);
      FileReader fr = new FileReader(file);
      BufferedReader inFile = new BufferedReader(fr);
                String line = infile.readLine();
                System.out.println(line);

Now the output of this is all fine but as soon as the file contains null characters inside of it the String does not read the file properly. Strange things happen, no errors just the println is all wrong.

I was thinking something along the lines of reading a character at a time in a loop and appending each character to the end of a String but have not been able to find out how to do that.

PLEASE HELP!!!!!!!!!


       
thejackwhiteAsked:
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CEHJConnect With a Mentor Commented:
That's not going to be reliable as String must have a valid content in the chosen encoding in order to be encoded properly. Pass it as a byte array.
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CEHJCommented:
You'd have to do your own encoding. Read it as a byte array, as you can't use Reader if there is any 'binary' stuff in there.
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CEHJCommented:
...but why would you want to display an encrypted file with these undisplayable 'holes' (null characters) in it? And there may be more undisplayable ones too
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thejackwhiteAuthor Commented:
Well its more that I need to pass it as a String and i am just printlining it out to test that the correct thing has been put into the string.
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thejackwhiteAuthor Commented:
Ok I have managed to read it in as ByteArrayOutputStream and that has worked with the nulls, but for the reasons of my program (just trust me on this one, couldn't be bothered explaining it) the ByteArrayOutputStream needs to be serialized.

Can this be done, do you (or anyone else) know?
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CEHJCommented:
Get the byte array from the BAOS (call toByteArray) and serialize that. Streams themselves are not serializable.
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thejackwhiteAuthor Commented:
Exactly how do I serialize a Byte[]?

I can't find the code to be able to do it and i'm not sure if you can do it?

Can you help?
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CEHJCommented:
objectOutputStream.write(yourByteArray);
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thejackwhiteAuthor Commented:
I'm sorry i'm not understanding your answers.

When doing the following code.

import java.util.*;

import java.io.*;

class test
{
   public static void main (String[] args) throws IOException
   {
                File file1 = new File("//192.168.0.17/rmit/test2.script");
          byte[] buffer = new byte[(int)file1.length()];
          BufferedInputStream is = new BufferedInputStream(new FileInputStream(file1));
          is.read(buffer, 0, (int)file1.length());
          is.close();
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          baos.write(buffer, 0, (int)file1.length());
         System.out.println(baos.toString());

      byte[] pass = baos.toByteArray();
      System.out.println (pass.toString());
   }
}

There is nothing wrong with reading in the file or anything but 'baos.toByteValue( )' doesn't seem to write properly.

I have read that 'toByteValue' will not pass the BAOS properly.

So the problem remains. How can I pull in the contents of a file into something like a byte[] and have it serialised ready to be returned. All this when the contents of the file will have null characters inside of it (so this rules out Strings apparently).  
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CEHJCommented:
I thought you said you were serializing the byte array/ passing it to a function? Why are you calling toString() on it? If you do - you're right back to square one!
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thejackwhiteAuthor Commented:
Yeah I have put the toString in to check that the pass[] has the correct contents
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CEHJCommented:
Well - we're going round in circles here. If a String has invalid contents, i.e. it's not encodable (null chars, non-printables,etc.) then you *can't* represent it as a String, unless in another format. A standard way of doing this is to print its hex value.
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thejackwhiteAuthor Commented:
Ok Sorry mate, its 4:30 am in Australia and i haven't had much sleep. But, i have soughted it out. Thanks for your help. Hope the points were worth the trouble
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CEHJCommented:
:-)
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