Apache Commons lang, logging, HttpClient etc.
The HTTP i.e. Hyper Text Transfer Protocol is one of the most significant & popular protocol nowadays. HTTP protocolís role has been expanded by the network growth; web services and other network enable applications. Also, applications which need HTTP protocol are also increasing in number.
Core functionality is being provided by the java.net package to access resources through HTTP. Full functionality is not provided by this package which is needed by applications. Apache Commons