Observer pattern is used when there is one-to-many relationship between objects such as if one object is modified, its depenedent objects are to be notified automatically. Observer pattern falls under behavioral pattern category.
Read moreIs Observer the same as listener?
The object which is being watched is called the subject. The objects which are watching the state changes are called observers or listeners .
Read moreAre event listeners observers?
An Observable is simply an object where you can observe it’s actions. So anything where you can listen to an action and then be told that action occurs is an Observable . This means an Event Listener is one .
Read moreWhat is the difference between event and Observer?
Event Driven Architecture (is a message-driven architecture), responsible to deliver message to Subscriber, asynchronously. Observer Pattern (is a software design pattern), responsible to command Subscriber to do something, synchronously.
Read more