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 |
call()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 |