String unicode -- understanding what is happening

Question

Hi,
Can some one please explain how the following is working in string
Case1:
1) Assume I have set of bytes encoded in UTF-8.
2)Iam reading the UTF-8 bytes using inputstreamreader and store it in string
3) I know string stores it in unicode -- But what encoding? (UCS-2 or UTF-8 etc)
Case 3:
4) Suppose SJIS bytes are encoded using UTF-8 and Iam reading using UTF-8 and storing it in String and then printing it using System.out.println()(locale is set to SJIS), who does the converstion from Unicode representation of the string to SJIS
Case 2:
* Bytes are SJIS encoded
* Read it using UTF-8 ( wrong encoding used to read)
* Store it in string . How will it store?
* Print it using System.out.println in a machine whose locale is set to SJIS.
* Who is doing the conversin from unicode to SJIS

Answer 1

Guessing...
Case1:
1) Assume I have set of bytes encoded in UTF-8.
2)Iam reading the UTF-8 bytes using
inputstreamreader and store it in string
3) I know string stores it in unicode -- But what
encoding? (UCS-2 or UTF-8 etc)
Depends on how you 'store' it. If you use String explicitly then the default encoding of the system is used. If you use String explicitly with an encoding then that encoding is used.
Most, but not all (bugs), implicit conversions for readers use the default encoding.
Case 3:
4) Suppose SJIS bytes are encoded using UTF-8 and Iam
reading using UTF-8 and storing it in String and then
printing it using System.out.println()(locale is set
to SJIS), who does the converstion from Unicode
representation of the string to SJIS
What conversion? If it is a String then it is UTF-8. If you 'display' it then it uses the OS encoding.
Case 2:
* Bytes are SJIS encoded
* Read it using UTF-8 ( wrong encoding used to
o read)
* Store it in string . How will it store?Garbage for the most part.
* Print it using System.out.println in a machine
e whose locale is set to SJIS.
* Who is doing the conversin from unicode to SJIS
Garbage in, Garbage out.
By the way there is a Internationalization forum and presumably you could get answers there.