Java read string as byte[] [duplicate]

Question

I want to convert a series of bytes in a byte[] to a string to append to a text file. Then when the string is pulled I want to convert it back to byte[] to decode it. I know I can't use getBytes(), I need to copy the string to it's original byte[] format then decode it back to a readable string. Is this possible?

     byte[] hash = pw.getBytes("UTF8");
     pw = hash.toString();

Then I pass the string to another class where I need it to be read as bytes, not changed to its byte form.

Roman C · Accepted Answer · 2016-03-23 11:54:48Z

3

toString won't work. You need to write, because that is the string representation of Array Object.

String s = new String(hash,"UTF-8");

edited Mar 23, 2016 at 11:54

Roman C

1

answered Oct 22, 2015 at 19:14

Suresh Atta

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5 Comments

caine1337 Over a year ago

So this is the correct way to turn the byte[] in to a String. How do I convert the String back in to bytes?

Louis Wasserman Over a year ago

@caine1337: Exactly the way you did it in your original question, with pw.getBytes("UTF-8"). You've already done that correctly.

Suresh Atta Over a year ago

@caine1337 byte[] hash = pw.getBytes("UTF8"); where pw is a string.

Suresh Atta Over a year ago

Down votes, when helping ?? Great.

caine1337 Over a year ago

So the series of encoded characters in my String will be read by getBytes the same way that the original String would?

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