ｄｏｍｐａｒｓｅｒ。ｓｅｔｆｅａｔｕｒｅ问题

Domparser mParser;
mParser.setFeature("http://xml.org/sax/features/validation", true);
mParser.setFeature("http://apache.org/xml/features/validation/schema", true);
mParser.setFeature("http://xml.org/sax/features/namespaces", true);
mParser.setFeature("http://apache.org/xml/features/continue-after-fatal-error", false);谁知道这是干什么的？