How to check encoding in java?

I am facing a problem about encoding.

For example, I have a message in XML, whose format encoding is "UTF-8".

 <message>
        <product_name>apple</product_name>
        <price>1.3</price>
        <product_name>orange</product_name>
        <price>1.2</price>
        .......
    </message>

Now, this message is supporting 开发者_C百科multiple languages:

• Traditional Chinese (big5),
• Simple Chinese (gb),

• English (utf-8)

  And it will only change the encoding in specific fields.

  For example (Traditional Chinese),

  蘋果 1.3 橙 1.2 .......

  Only "蘋果" and "橙" are using big5, "<product_name>" and "</product_name>" are still using utf-8.

  <price>1.3</price> and <price>1.2</price> are using utf-8.

How do I know which word is using different encoding?

---

It looks like whoever is providing the XML is providing incorrect XML. They should be using a consistent encoding.

http://sourceforge.net/projects/jchardet/files/ is a pretty good heuristic charset detector. It's a port of the one used in Firefox to detect the encoding of pages that are missing a charset in content-type or a BOM.

You could use that to try and figure out the encoding for substrings in a malformed XML file if you can't get the provider to fix their output.

---

you should use only one encoding in one xml file. there are counterparts of the characters of big5 in the UTF_8 encoding.

---

Because I cannot get the provider to fix the output, so I should be handle it by myself and I cannot use the extend library in this project.

I only can solve that like this,

String str = new String(big5String.getByte("UTF-8"));

before display the message.