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 |
call() Computes a result, or throws an exception if unable to do so. |
Public methods
call
abstract fun call(): V
Computes a result, or throws an exception if unable to do so.
Return | |
---|---|
V |
computed result |
Exceptions | |
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java.lang.Exception |
if unable to compute a result |