You can use this code: Enumeration enumeration = session.getAttributeNames(); while (enumeration.hasMoreElements()) { String element = (String) enumeration.nextElement(); session.removeAttribute(element); }
If yo don't have delete any element, you can do this: Enumeration enumeration = session.getAttributeNames(); while (enumeration.hasMoreElements()) { String element = (String) enumeration.nextElement(); if(!element.matches("notDeleteElement") ) session.removeAttribute(element); }