added observer example

This commit is contained in:
2024-11-11 11:16:34 +01:00
parent 6eee9df1fe
commit ca9d0ec062
5 changed files with 76 additions and 0 deletions

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@ -0,0 +1,7 @@
package learn.simple_observer;
public interface Subject {
void registerObserver(Observer o);
void removeObserver(Observer o);
void notifyObservers();
}