看看String类的构造方法-JSP教程,Java基础

string
public string(byte[] bytes,
              string enc)
       throws unsupportedencodingexception
construct a new string by converting the specified array of bytes using the specified character encoding. the length of the new string is a function of the encoding, and hence may not be equal to the length of the byte array.
parameters:
bytes – the bytes to be converted into characters
enc – the name of a supported character encoding
throws:
unsupportedencodingexception – if the named encoding is not supported
since:
jdk1.1