edu.emory.mathcs.backport.java.util.concurrent
Interface Callable

public interface 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 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.

Since:

1.5

Author:

Doug Lea

See Also:

Executor

Method Summary

java.lang.Object

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

Method Detail

call

public java.lang.Object 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