Resin weaves Java components to HTML with JavaScript and the Java Server Pages (JSP) interface. Resin conforms to the Servlet interface and can be used with the major web servers, including Apache. Amongst other features, it implements the bulk of ECMA-262, the EcmaScript standard, implements JavaScript 1.3 features, extends regular expressions with Perl 5 syntax and compiles scripts directly to JVM bytecodes.