Datamatics Global Services Associate Consultant Interview Questions, Process, and Tips

Dsa, js, oops, java, python

Q1. Basic .net questions with OOP concepts
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Q1. What is the difference between Hashmat and hashtable
Ans. 
Hashmap is a data structure that stores key-value pairs, while hashtable is a synchronized version of hashmap.
• Hashmap allows null values and only one null key, while hashtable does not allow null keys or values.

• Hashtable is synchronized, making it thread-safe, while hashmap is not synchronized.

• Hashmap is faster than hashtable for non-thread-safe operations.

• Example: HashMap map = new HashMap<>(); Hashta
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Q2. What’s is the use of functional interface
Ans. 
Functional interfaces are interfaces with a single abstract method, used in Java to enable lambda expressions.
• Functional interfaces allow lambda expressions to be used as instances of the interface.

• They provide a way to implement functional programming concepts in Java.

• Examples include java.lang.Runnable, java.util.Comparator, and java.util.function.Predicate.
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Q1. Tell me something about yourself, your professional experience.
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Q2. Explained about educational and professional experience in detail.Showed willingness to work for any given task. Interview was taken by client directly.
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