OOP interview tips

Identify the requirements

Establish classes and relationship

• List all object, and their attribute, mutual relationships
• nouns are object, verbs are the methods
• either abstract class or interface
• include OOD principles

Sequence and activity diagram

• Sequence of event happening

Use Design patterns

Code

• write the bone structure first

Design approach

• Identifying the potential use cases first
• Note down the constraints present in our system
• Keep scalability in mind (such as multi thread)