In that pattern, a destructor method (known as finalize () in Java) is provided, to enable automatic cleanup, and release of resources when the object is destroyed.

A Java finalize () method allows an object to take special cleanup actions before it is ultimately discarded by the garbage collector. It is fairly well-known that this language feature has issues ...

They're deprecating the finalize method, adding another method to the long list of Java deprecated methods that tend not to get pruned out of the JDK's code base.