Open Destinations Junior Software Developer Interview Questions and Answers

Regular aptitude test, multiple choice questions

Q1. Difference between interface and abstract class
Ans. 
Interface is a contract for classes to implement, while abstract class can have some implementation.
• Interface cannot have any implementation, only method signatures.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class can have both abstract and non-abstract methods.

• Interfaces are used for achieving multiple inheritance in Java.

• Example: interface Shape { void draw(); } ab...read more
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Q1. Regular questions about corporate working
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