Orage Technologies Java Developer Interview Questions and Answers

MVC focuses on separating the application into Model, View, and Controller components, while MVVM adds a ViewModel layer to handle data and logic.

• MVC stands for Model-View-Controller, where the Model represents the data, the View represents the UI, and the Controller handles user input.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and Model, handling data and logic.

• I...read more

Marker interface is an empty interface used to mark a class for special treatment.

• Marker interface has no methods or fields, it is used to provide metadata about the class.

• Examples of marker interfaces in Java include Serializable, Cloneable, and Remote.

• Classes implementing marker interfaces are treated differently by the JVM or frameworks.

Shallow copy only copies the references of objects, while deep copy creates new copies of objects.

• Shallow copy creates a new object but does not create new copies of nested objects.

• Deep copy creates new copies of all nested objects, ensuring complete independence.

• Shallow copy is faster and more memory efficient, but changes to nested objects affect both copies.

• Deep copy is slower and consumes more memory, but changes t...read more