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.

Since: 1.5

Author: Doug Lea

See Also: Executor

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

Method Detail

call

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

Returns: computed result

Throws: Exception if unable to compute a result