java.util.concurrent
Interface Callable<V>

public interface 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.

Since:

1.5

Author:

Doug Lea

See Also:

Executor, FutureTask

Method Summary

V	call() Computes a result, or throws an exception if unable to do so.

Method Detail

call

public V call()
       throws java.lang.Exception

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

Returns:

computed result

Throws:

java.lang.Exception - if unable to compute a result