I'm looking for a standard Javafx or java interface (if it exists) that acts like a Callback
, except that it does not return a value.
The standard Callback
from javafx.util
package is as follows:
public interface Callback<P,R> {
public R call(P param);
}
This is useful when you need to return the value, but I don't. I've looked into Callable<T>
:
public interface Callable<V> {
V call() throws Exception;
}
But this doesn't actually pass in a value into call
. What I'm looking for is basically this:
public interface Callable<V> {
void call(V value) throws Exception;
}
Is there a standard Java interface, or should I just create my own?
What are you looking for is Consumer
. That's added since java 8
.
Represents an operation that accepts a single input argument and returns no result. Unlike most other functional interfaces, Consumer is expected to operate via side-effects.
@FunctionalInterface
public interface Consumer<T> {
/**
* Performs this operation on the given argument.
*
* @param t the input argument
*/
void accept(T t);
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