help needed with lexer

Can someone help me understand the following code :
protected void parse(ParametersHeader parametersHeader)
	throws ParseException {
		while (lexer.lookAhead(0) == ';') {
			// eat white space
			NameValue nv = nameValue();
			// eat white space

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basically  the lexer contains a stringbuffer and if I pass sthg like :

<sas>; kkkk=hass; cas=aaaa

I only get <sas>; cas=aaaa and the middle part is just filtered out
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Philippe DamervalSenior Analyst ProgrammerCommented:
Can you give us the class for "lexer"?

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bachra04Author Commented:
The problem was solved
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