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- package util;
- import java.util.HashSet;
- import java.util.Set;
- import java.util.function.Consumer;
- public class Action<T> {
- private Set<Consumer<T>> listeners = new HashSet<Consumer<T>>();
- public void addListener(Consumer<T> listener) {
- listeners.add(listener);
- }
- public void removeListener(Consumer<T> listener) {
- listeners.remove(listener);
- }
- public void broadcast(T argument) {
- listeners.forEach(x -> x.accept(argument));
- }
- }
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