Added in API level 1

Callable

@FunctionalInterface interface Callable<V : Any!>
java.util.concurrent.Callable

A task that returns a result and may throw an exception. Implementors define a single method with no arguments called call.

The Callable interface is similar to , in that both are designed for classes whose instances are potentially executed by another thread. A Runnable, however, does not return a result and cannot throw a checked exception.

The Executors class contains utility methods to convert from other common forms to Callable classes.

Summary

Public methods
abstract V

Computes a result, or throws an exception if unable to do so.

Public methods

call

Added in API level 1
abstract fun call(): V

Computes a result, or throws an exception if unable to do so.

Return
V computed result
Exceptions
java.lang.Exception if unable to compute a result