title: How do I detect unicode characters in a Java string to resolve sax parser exception
body: <p>Suppose I have a string that contains '¿'. How would I find all those unicode characters? Should I test for their code? How would I do that?</p>
  
  <p>I want to detect it to avoid sax parser exception which I am getting it while parsing the xml
  saved as a clob in oracle 10g database.</p>
  
  <p>Exception
  javax.servlet.ServletException: org.xml.sax.SAXParseException: Invalid byte 1 of 1-byte UTF-8 sequence.</p>