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 java.lang.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.

Author:
Doug Lea
Since:
1.5
See Also:
Executor

Method Summary

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

Method Details

call

public Object call()
            throws Exception
Computes a result, or throws an exception if unable to do so.
Returns:
computed result