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:

Executor

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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https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/Callable.html