Category: Design Patterns and Principles

Collection of Design Patterns and Principles interview questions and answers with example asked in IT Industries.

Open-Closed Principle – Interview Question with awesome Answer

Interview Question: Explain Open – closed Object Oriented Design Principle with program and example. What is benefit of using Open closed principle? NOTE: To answer this question, we should be explaining what the problem is without using Open Closed principle and what we get using Open- Closed principle with a program example. Answer: Open –…

Read the full article

What is difference between Factory Design Pattern and Builder Pattern?

Answer: Listing here the differences between factory design pattern and Builder design pattern with example and source code. A Factory Design Pattern is used when the entire object can be easily created and object is not very complex. Whereas Builder Pattern is used when the construction process of a complete object is very complex.  …

Read the full article