Uses of Class
java.lang.Void

Packages that use Void 
Package Description
java.lang
Provides classes that are fundamental to the design of the Java programming language.
java.net.http
HTTP Client and WebSocket APIs
java.nio.channels
Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations.
java.util.concurrent
Utility classes commonly useful in concurrent programming.
javax.management.openmbean
Provides the open data types and Open MBean descriptor classes.