Improve this answer. McDowell McDowell k 29 29 gold badges silver badges bronze badges. Doesn't that defeat the purpose? Ankar Ankar 94 2 2 bronze badges. I get the following error: The constructor byte[], Charsest is undefined — digerati So doing this made it work: URLEncoder. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
Post as a guest Name. Email Required, but never shown. The Overflow Blog. The java. InputStreamReader , java. OutputStreamWriter , java. String classes, and classes in the java. There was some kind of conversion, because I would get some other kind of gibberish instead.
I think the parsing code just looks at whatever encoding the XLS file is supposed to be in. When Java parses a file it uses some encoding to read the bytes on the disk and create bytes in memory. The default encoding varies from platform to platform. Pages Home core java spring online courses thread java 8 coding sql books oop interview certification free resources best. There are multiple ways to convert a byte array to String in Java but the most straightforward way is to use the String constructor which accepts a byte array i.
Since bytes are binary data but String is character data, it's very important to know the original character encoding of the text from which byte array has created. If you use a different character encoding, you will not get the original String back.
For example, if you have read that byte array from a file which was encoded in "ISO" and you have not provided any character encoding while converting byte array to String using new String constructor then it's not guaranteed that you will get the same text back? If it's different you may see some garbage characters or even different characters changing the meaning of text completely and I am not saying this by reading few books, but I have faced this issue in one of my project where we are reading data from the database which contains some french characters.
In the absent of any specified coding, our platform defaulted on something which is not able to convert all those special character properly, I don't remember exact encoding. That issue was solved by providing "UTF-8" as character encoding while converting byte array to String.
Yes, there is another overloaded constructor in String class which accepts character encoding i. That will not only explain the difference but also give you some basic idea about character encoding.
0コメント