| /* |
| * Written by Doug Lea with assistance from members of JCP JSR-166 |
| * Expert Group and released to the public domain, as explained at |
| * http://creativecommons.org/licenses/publicdomain |
| */ |
| |
| package java.util.concurrent; |
| |
| /** |
| * A task that returns a result and may throw an exception. |
| * Implementors define a single method with no arguments called |
| * <tt>call</tt>. |
| * |
| * <p>The <tt>Callable</tt> interface is similar to {@link |
| * java.lang.Runnable}, in that both are designed for classes whose |
| * instances are potentially executed by another thread. A |
| * <tt>Runnable</tt>, however, does not return a result and cannot |
| * throw a checked exception. |
| * |
| * <p> The {@link Executors} class contains utility methods to |
| * convert from other common forms to <tt>Callable</tt> classes. |
| * |
| * @see Executor |
| * @since 1.5 |
| * @author Doug Lea |
| * @param <V> the result type of method <tt>call</tt> |
| */ |
| public interface Callable<V> { |
| /** |
| * Computes a result, or throws an exception if unable to do so. |
| * |
| * @return computed result |
| * @throws Exception if unable to compute a result |
| */ |
| V call() throws Exception; |
| } |
