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64 lines (56 loc) · 1.49 KB
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package patterns.behavioral;
import java.util.ArrayList;
import java.util.List;
public class MediatorLesson {
public static void main(String[] args) {
ConcreteMediator mediator = new ConcreteMediator();
mediator.add(new ConcreteCollegue(mediator));
mediator.add(new ConcreteCollegue(mediator));
Collegue collegue = new ConcreteCollegue(mediator);
collegue.changeStatus();
}
}
interface Mediator {
void requestAll(Collegue collegue);
}
class ConcreteMediator implements Mediator {
List<Collegue> collegues = new ArrayList<>();
void add(Collegue collegue) {
collegues.add(collegue);
}
@Override
public void requestAll(Collegue trueCollegue) {
trueCollegue.setTrue();
for (Collegue collegue : collegues) {
if(collegue != trueCollegue) {
collegue.setFalse();
}
}
}
}
interface Collegue {
void setTrue();
void setFalse();
void changeStatus();
}
class ConcreteCollegue implements Collegue {
Mediator mediator;
boolean status;
public ConcreteCollegue(Mediator mediator) {
this.mediator = mediator;
}
@Override
public void setTrue() {
status = true;
System.out.println("My status is: " + status);
}
@Override
public void setFalse() {
status = false;
System.out.println("My status is: " + status);
}
@Override
public void changeStatus() {
mediator.requestAll(this);
}
}