Код:
Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError
	at java.util.Stack.push(Stack.java:50)
	at com.oroinc.text.regex.Perl5Matcher._pushState(Perl5Matcher.java)
	at com.oroinc.text.regex.Perl5Matcher._match(Perl5Matcher.java)
	at com.oroinc.text.regex.Perl5Matcher._match(Perl5Matcher.java)
	at com.oroinc.text.regex.Perl5Matcher._match(Perl5Matcher.java)
	at com.oroinc.text.regex.Perl5Matcher._match(Perl5Matcher.java)
	at
И так далее...