Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

When to use inheritance in Java In object-oriented programming, we can use inheritance when we know there is an “is a” relationship between a child and its parent class.

A Java class inherits these methods and can override any method that’s not declared final. For example, the non- final toString() method can be overridden, whereas the final wait() methods cannot.