Interface Callable<V>
- Type Parameters:
-
V- the result type of methodcall
- All Known Subinterfaces:
- DocumentationTool.DocumentationTask, JavaCompiler.CompilationTask
- 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
Methods
| Modifier and Type | Method and Description |
|---|---|
V |
call() Computes a result, or throws an exception if unable to do so. |
Methods
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/javase/8/docs/api/java/util/concurrent/Callable.html