```
public class CompletionStages
extends Object
```
Utility methods for CompletionStage and CompletableFuture.

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T> CompletionStage<T>`	`completedStage(T value)`
`static <T> CompletableFuture<T>`	`failedFuture(Throwable exception)`
`static <T> CompletionStage<T>`	`failedStage(Throwable exception)`
`static <T> void`	`propagateCompletion(CompletionStage<T> from, CompletableFuture<T> to)`

public static <T> CompletionStage<T> completedStage(T value)

public static <T> CompletionStage<T> failedStage(Throwable exception)

public static <T> CompletableFuture<T> failedFuture(Throwable exception)

public static <T> void propagateCompletion(CompletionStage<T> from,
                                           CompletableFuture<T> to)

Class CompletionStages