relgames

class Person {
   private void eventOccurs()    {
       react();
       AnotherPerson.react();
   }

   private react()  {
           //Реакция этого персонажа на событие mIdDone;
    }
}

public interface Event {
    void subscribe(Actor a);
}

public interface FullEvent extends Event {
    void fire();
    void addReaction(...)
}

public class Person {
    private final FullEvent fullEvent = new FullEventImpl();

    public getEvent() {
        return new Event() { // Теперь никак нельзя вызвать fire() - ни через приведение типов, ни через рефлексию. 
            @Override
            public subscribe(Actor a) {
                fullEvent.subscribe(a);
            }
        }
    }
    ....
}

    public interface Transaction {
        void commit();
        void rollback();
    }

    public static void tryTransaction(Transaction tr) {
        try {
            tr.commit();
        } catch (Exception e) {
            //log.error....
            tr.rollback();
            throw new CommitException(...);
        }
    }

        tryTransaction(new Transaction() {
            @Override
            public void commit() {
                //step1
                //...

                //step2
                tryTransaction(new Transaction() {
                    ...
                });
            }

            @Override
            public void rollback() {
            }
        });

        Pattern pathPattern = Pattern.compile("(\\w+=\\w+\\s*)");
        Matcher matcher = pathPattern.matcher("sdf=ff ggg=dd hhh=44 jjj=5456");
        while (matcher.find()) {
            for (int i=1; i<=matcher.groupCount(); i++) {
                System.out.println(matcher.group(i));
            }
        }

sdf=ff 
ggg=dd 
hhh=44 
jjj=5456