pry.rb

[1] pry(main)> %w(javax.xml.parsers.DocumentBuilderFactory javax.xml.parsers.DocumentBuilder org.w3c.dom.Document org.w3c.dom.NodeList org.w3c.dom.Node org.w3c.dom.Element java.io.File).map { |f| java_import f }
uri:classloader:/jruby/java/core_ext/object.rb:95: warning: already initialized constant File
=> [[Java::JavaxXmlParsers::DocumentBuilderFactory],
 [Java::JavaxXmlParsers::DocumentBuilder],
 [Java::OrgW3cDom::Document],
 [Java::OrgW3cDom::NodeList],
 [Java::OrgW3cDom::Node],
 [Java::OrgW3cDom::Element],
 [Java::JavaIo::File]]
[2] pry(main)> f = java.io.File.new('79c71454a4251fb4e60dc6220f736b.xml')
=> #<Java::JavaIo::File:0x174721c4>
[3] pry(main)> db_factory = DocumentBuilderFactory.newInstance();
[4] pry(main)> nil
=> nil
[6] pry(main)> doc = d_builder.parse(f); nil
NoMethodError: undefined method `parse' for nil:NilClass
from (pry):6:in `<eval>'
[7] pry(main)> d_builder = db_factory.newDocumentBuilder();
[8] pry(main)> doc = d_builder.parse(f); nil
=> nil
[9] pry(main)> doc.class
=> Java::ComSunOrgApacheXercesInternalDom::DeferredDocumentImpl
[14] pry(main)> doc.getDocumentElement().normalize(); nil
=> nil
[17] pry(main)> nlist = doc.getElementsByTagName("xml")
=> #<Java::ComSunOrgApacheXercesInternalDom::DeepNodeListImpl:0x8e25d3f>