How to detect the failure of byte[] => String conversion

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Sakagami Hiroki - 02 Jul 2006 16:18 GMT

Hi,

When I want to convert a byte array to a String object, I can use
String constructor with charset parameter:

String result = new String(bytearray, charset);

Here, if the bytearray contains any illegal sequence of bytes in
charset, they seems to be replaced with `?'. Is it possible to throw
Exception instead of using replacement characters?

Regards,

--
Sakagami Hiroki

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Timo Stamm - 02 Jul 2006 17:37 GMT

Sakagami Hiroki schrieb:

> Hi,
>
[quoted text clipped - 6 lines]
> charset, they seems to be replaced with `?'. Is it possible to throw
> Exception instead of using replacement characters?

Not using the String class. The String class uses the Charset and
CharsetDecoder classes and you can do so too:

CharsetDecoder d = Charset.forName("US-ASCII").newDecoder();
try {
CharBuffer r = d.decode(ByteBuffer.wrap(bytearray));
r.toString(); // your encoded String
} catch(CharacterCodingException e) {
// ...
}

Timo

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Sakagami Hiroki - 03 Jul 2006 15:39 GMT

> Not using the String class. The String class uses the Charset and
> CharsetDecoder classes and you can do so too:
[quoted text clipped - 6 lines]
> // ...
> }

Works fine. Thanks!

--
Sakagami Hiroki

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How to detect the failure of byte[] => String conversion

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