Callable (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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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

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

Method Summary
`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