Callable
public interface Callable
java.util.concurrent.Callable<V> |
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:
Summary
Public methods | |
---|---|
abstract V | call() Computes a result, or throws an exception if unable to do so. |
Public methods
call
public abstract V call ()
Computes a result, or throws an exception if unable to do so.
Returns | |
---|---|
V | computed result |
Throws | |
---|---|
Exception | if unable to compute a result |