box/box-java-sdk v4.0.0

on GitHub

The most important change this release includes is the replacement of the HTTP library from a native one to
OkHttp which allows SDK to

• Support the HTTP2 version of the HTTP protocol.
• Support proxies that do not use only basic authentication method. For details on creating custom proxy authenticators and an example of
  NTLM proxy authentication.

Breaking Changes

• BatchAPIRequest – is no longer supported by the SDK
• BoxAPIConnection#DEFAULT_MAX_ATTEMPTS is replaced with BoxAPIConnection#DEFAULT_MAX_RETRIES
• BoxRedirectResponse – was removed and will not be replaced
• BoxEvent.Type is replaced with EventType
• Removing deprecated methods from BoxFile, BoxFileVersionRetention, BoxFolder, BoxGroup, BoxGroupMembership,BoxItem, BoxRetentionPolicy, BoxTask, BoxUser, BoxWebLink, EventLog, Metadata and MetadataTemplate.

Migration details can be found here.

New Features and Enhancements:

• Using OkHttp in Java SDK (#1083) (2656698)