java.util.concurrent.Callable<V>

java.util.concurrent

Interface Callable<V>

Type Parameters:

V

 - the result type of method call
All Known Subinterfaces:JavaCompiler.CompilationTask

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.

The 

Executors

 class
contains utility methods to convert from other common forms to Callable classes.

Since:1.5
See Also:

Executor

Method Summary

Methods 

Modifier and Type	Method and Description
V	call() Computes a result, or throws an exception if unable to do so.

Method Detail

call

V call()
throws Exception

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

Returns:computed result
Throws:

Exception

 -
if unable to compute a result