Jocata Software Engineer Interview Questions and Answers

Easy and good English passage reading

Q1. Projects coding dbms queries basic coding
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Tudip is one of the company whose selection process is very easy only its PI may be quite hard

Leet code medium level question

Q1. About Java Streams
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Q2. Restful API coding completion based on given file
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Q1. To check your attitude
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Q2. Given detailed about company and what project you are going to work on?
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Q1. Hashmap working
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Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap uses a hashing function to map keys to indices in an array.

• It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.

• Example: HashMap<String, Integer> map = new HashMap<>(); map.put("key", 123); int value = map.get("key");
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Q2. Multithreading cases
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Q3. Scenario specific on how to handle multiple events on a single variable to have accurate result
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Q4. Database indexing
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Q5. Architecture level
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Not so much difficult. english comprehension matters for this test.

Q1. Departmental question asked.
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Q2. What is C++ and what are the basics
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C++ is a high-level programming language used for developing system software, application software, and video games.
• C++ is an extension of the C programming language

• It supports object-oriented programming concepts like classes, inheritance, polymorphism, etc.

• It is a compiled language and provides low-level memory manipulation features

• C++ is widely used in developing operating systems, device drivers, game engines, and ...read more
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Aptitude test was easy level and moderate level.

Coding test was held in the google form which was very easy.

Q1. What is volatile keyword?
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The volatile keyword in software engineering is used to indicate that a variable's value can be modified by multiple threads.
• Volatile keyword ensures that the variable's value is always read from and written to the main memory, rather than cached in a thread's local cache.

• It is used to prevent unexpected behavior in multi-threaded environments where multiple threads may access and modify the same variable simultaneousl...read more
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Q2. What is abstract class
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An abstract class is a class that cannot be instantiated and is meant to be subclassed.
• An abstract class can have abstract methods that must be implemented by its subclasses.

• An abstract class can also have non-abstract methods that can be inherited by its subclasses.

• An abstract class provides a common interface for its subclasses.

• An abstract class can have instance variables and constructors.

• An abstract class cannot be...read more
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Q3. Where do you use abstract class
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Abstract classes are used to provide a common interface and partial implementation for related classes.
• Abstract classes are used when you want to create a base class that cannot be instantiated on its own but can be inherited by other classes.

• They are useful when you want to define common methods and properties that multiple related classes should have.

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

• Ab...read more
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