# Package org.jsoup.helper

@NonnullByDefault package org.jsoup.helper
Package containing classes supporting the core jsoup code.

Related Packages
Package
Description
org.jsoup
Contains the main `Jsoup` class, which provides convenient static access to the jsoup functionality.
Class
Description
ChangeNotifyingArrayList<E>
Implementation of ArrayList that watches out for changes to the contents.
Consumer<T>
A functional interface (ala Java's `Consumer` interface, implemented here for cross compatibility with Android.
DataUtil
Internal static utilities for handling data.
HttpConnection
Implementation of `Connection`.
HttpConnection.KeyVal
HttpConnection.Request
HttpConnection.Response
Validate
Validators to check that method arguments meet expectations.
ValidationException
Validation exceptions, as thrown by the methods in `Validate`.
W3CDom
Helper class to transform a `Document` to a `org.w3c.dom.Document`, for integration with toolsets that use the W3C DOM.
W3CDom.W3CBuilder
Implements the conversion by walking the input.