Converting String to byte array

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Raga - 05 Oct 2006 16:01 GMT

Hi,

There is a code for converting String to byte array, as follows:

"
    public byte[] toByteArray(String s)
    {
        char[] c = s.toCharArray();
        int len = c.length;
        byte[] b = new byte[len * 2];

for ( int i = 0 ; i < len ; i++ )
    {
     b[i * 2] = (byte)(c[i]);
    b[(i * 2) + 1] = (byte)(c[i] >> 8);
    }

return b;
    }

"

But this isn't doing the conversion properly. For example, for the
(euro) symbol, it converts to some other unreadable symbol. Also, same
is the case for square brackets. Any idea why this' so? What's wrong
with the above code?

Thanks.

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Raga - 05 Oct 2006 16:03 GMT

> Hi,
>
[quoted text clipped - 22 lines]
> is the case for square brackets. Any idea why this' so? What's wrong
> with the above code?

the encoding format is UTF-8.

> Thanks.

Reply to this Message

Oliver Wong - 05 Oct 2006 16:13 GMT

> Hi,
>
[quoted text clipped - 24 lines]
>
> the encoding format is UTF-8.

Your code seems to be contradicting this claim. It seems to be encoding
in Sun's special custom encoding (which is similar to, but distinct from,
UTF-16).

- Oliver

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Thomas Fritsch - 05 Oct 2006 16:28 GMT

>>Hi,
>>
[quoted text clipped - 17 lines]
>>
>>"

I think you have just re-invented the wheel. Your code above converts a
String to a UTF-16 coded byte array. Your code above is equivalent to:
public byte[] toByteArray(String s)
{
return s.getBytes("UTF-16");
}
Hence the question arises: Did you really want to decode the String to a
UTF-16 coded byte array?

>>But this isn't doing the conversion properly. For example, for the €
>>(euro) symbol, it converts to some other unreadable symbol. Also, same
>>is the case for square brackets. Any idea why this' so? What's wrong
>>with the above code?
>
> the encoding format is UTF-8.

Which encoding format is UTF-8? The one you get, or the one you want?
May be you simply want:
public byte[] toByteArray(String s)
{
return s.getBytes("UTF-8");
}

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Thomas

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Converting String to byte array

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