Home » Oracle » 1z0-804 » Which method would you supply to a class implementing the Callable interface?
Which method would you supply to a class implementing the Callable interface?
A. callable ()
B. executable ()
C. call ()
D. run ()
E. start ()
Correct Answer: C
Explanation/Reference:
Explanation:
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.
Note:
Interface Callable<V>
Type Parameters:
V – the result type of method 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.
Reference:java.util.concurrent
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