Callable

java.util.concurrent

Interface Callable<V>

Type Parameters:

V - the result type of method call

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

Method Summary

All Methods

Instance Methods

Abstract 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