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 Runnable
, 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.
See Also
Public Method Summary
abstract V |
call()
Computes a result, or throws an exception if unable to do so.
|
Public Methods
public abstract V call ()
Computes a result, or throws an exception if unable to do so.
Returns
- computed result
Throws
Exception | if unable to compute a result |
---|