Combining two CompletableFuture objects in Java

CombiningCompletableFuturesExample.java

// callback is executed after the completion of 
// completableFuture1, completableFuture2

completableFuture1.thenCombine(completableFuture2, biFunction);

completableFuture1.thenAcceptBoth(completableFuture2, biConsumer);

completableFuture1.runAfterBoth(completableFuture2, runnable);


// callback is executed after the completion of 
// either one of completableFuture1 or completableFuture2

completableFuture1.applyToEither(completableFuture2, function);

completableFuture1.acceptEither(completableFuture2, consumer);

completableFuture1.runAfterEither(completableFuture2, runnable);