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Interface Callable<V>

Type Parameters:
V - the result type of method call
All Known Subinterfaces:
DocumentationTool.DocumentationTask, JavaCompiler.CompilationTask
All Known Implementing Classes:
JavacTask
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface 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:

Method Summary

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

Method Details

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

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/concurrent/Callable.html