Xml document parse Exception

Hi,
when i am parsing the document having encoding scheme is US-ASCII
doc = docBuilder.parse(url);     
it throws Exception :
com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: Byte "146" is not a member of the (7-bit) ASCII character set.
how can i resolve it ?

Read url and convert the String to bytes using UTF-8, which is the default character encoding for XML.

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