Interface Premise

public interface Premise

Result of a previously evaluated condition. Used to fluently chain API calls like Optionals.ifPresent(). For example:

   ifPresent(getStory(), Story::tell)
       .or(() -> ifPresent(getJoke(), Joke::tell))
       .orElse(() -> print("can't tell"));
 

Since:

1.14

Method Summary

Modifier and Type	Method	Description
<E extends Throwable> Premise	or(CheckedSupplier<? extends Premise, E> alternative)	Evaluates alternative if this premise doesn't hold.
<E extends Throwable> void	orElse(CheckedRunnable<E> block)	Runs block if this premise doesn't hold.

Method Details

or

<E extends Throwable> Premise or(CheckedSupplier<? extends Premise, E> alternative)
                          throws E

Evaluates alternative if this premise doesn't hold.

Throws:

E

orElse

<E extends Throwable> void orElse(CheckedRunnable<E> block)
                           throws E

Runs block if this premise doesn't hold.

Throws:

E