Completable future is a class that is part of the java.util.concurrent package and represents a promise of a result that will be available in the future. It has several advantages over other ways ...

Prior to Completable Future, task 3 was performed by main thread in blocking way where it has to wait and carryout intermediate results and complete delegation was not possible.

New ExecutorService methods: close What do these methods do In Java 19 a State Enum was added to Future Future.State that has 4 constants [CANCELLED, FAILED, RUNNING, SUCCESS] The state () method will ...