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Java to convert bytes into String
Hi,
My java application has read a Chinese web page into bytes[], and has detected the encoding of the web page.
bytes[] input = readfileintobyte(File file);
String enc = detectEncoding(input);
How can i convert the input into a "utf-8" encoded string?
I have tried the following but it doesn't work:
String newinput = new String(input, "utf-8");
Seems like that the enc variable should be used to convert to utf-8 string. But how?
My java application has read a Chinese web page into bytes[], and has detected the encoding of the web page.
bytes[] input = readfileintobyte(File file);
String enc = detectEncoding(input);
How can i convert the input into a "utf-8" encoded string?
I have tried the following but it doesn't work:
String newinput = new String(input, "utf-8");
Seems like that the enc variable should be used to convert to utf-8 string. But how?
Mick Barry
String newinput = new String(input, enc);
> How can i convert the input into a "utf-8" encoded string?
theres no such thing in java, there is only a utf8 encoded byte array
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
theres no such thing in java, there is only a utf8 encoded byte array
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
ASKER
objects: the first solution works.
i just wonder why "utf-8" is not used in the solution?
in addition, what if i want to convert newinput into the original encoding enc?
i just wonder why "utf-8" is not used in the solution?
in addition, what if i want to convert newinput into the original encoding enc?
explained that in the 2nd comment.
java strings do not really have an encoding. its the byte array that has a specific encoding.
ie. the byte array contains the string encoded with a specific charset
java strings do not really have an encoding. its the byte array that has a specific encoding.
ie. the byte array contains the string encoded with a specific charset
> in addition, what if i want to convert newinput into the original encoding enc?
byte[] original = newinput.getBytes(enc);
byte[] original = newinput.getBytes(enc);
>>
objects: the first solution works.
i just wonder why "utf-8" is not used in the solution?
>>
Because utf-8 is not being used as the encoding. The encoding being used is the original encoding.
It's not clear what your goal is, but if it's to get a byte array with utf-8 encoding, then you need to transcode
objects: the first solution works.
i just wonder why "utf-8" is not used in the solution?
>>
Because utf-8 is not being used as the encoding. The encoding being used is the original encoding.
It's not clear what your goal is, but if it's to get a byte array with utf-8 encoding, then you need to transcode
ASKER
CEHJ, i do want to save the contents in utf-8. will the following code be ok?
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
String utf8_newinput = new String(utf8, "UTF8");
If the code is good, can i make it simpler?
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
String utf8_newinput = new String(utf8, "UTF8");
If the code is good, can i make it simpler?
ASKER
I just check, and my above code doesn't work.
CEHJ, how can I do the transcode?
CEHJ, how can I do the transcode?
>, i do want to save the contents in utf-8. will the following code be ok?
No, as I already explained above.
If you want to save the contents in utf8 then you need to save the byte array, *not* a string
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
// save utf8 encoded byte array to a file
No, as I already explained above.
If you want to save the contents in utf8 then you need to save the byte array, *not* a string
String newinput = new String(input, enc);
byte[] utf8 = newinput.getBytes("UTF8");
// save utf8 encoded byte array to a file
ASKER
objects, when i save the utf8 encoded byte array to a file, i don't need to specify any encoding, right?
do you have a quick example about saving utf8 byte array to a file?
in addition, if i want to do something on the string which is based on the original byte array (encoded in enc), how can I do so that the chinese characters inside the byte array can be properly handled.
thanks
do you have a quick example about saving utf8 byte array to a file?
in addition, if i want to do something on the string which is based on the original byte array (encoded in enc), how can I do so that the chinese characters inside the byte array can be properly handled.
thanks
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ASKER
Excellent!