Majesco Senior Software Engineer Interview Questions, Process, and Tips

Q1. Explain the working of Hashmap
Ans. 
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap uses a hash function to map keys to indices in an array.

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

• In case of collisions, separate chaining or open addressing techniques are used to handle them.

• Example: HashMap map = new HashMap<>(); ma
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Q2. Explain Inheritance in Java
Ans. 
Inheritance in Java allows a class to inherit properties and behavior from another class.
• Allows a class to inherit fields and methods from another class

• Promotes code reusability and reduces redundancy

• Uses the 'extends' keyword to establish a parent-child relationship

• Child class can access non-private members of the parent class
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Q3. Explain Interface in Java
Ans. 
Interface in Java is a blueprint of a class that defines a set of methods without implementation.
• Interfaces can have abstract methods and constants

• Classes can implement multiple interfaces

• Interfaces are used for achieving abstraction and multiple inheritance
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Q4. Collection framework in detail
Ans. 
Collection framework in Java provides a set of interfaces and classes to store and manipulate groups of objects.
• Includes interfaces like List, Set, Map

• Classes like ArrayList, LinkedList, HashSet, HashMap

• Provides methods for adding, removing, and accessing elements

• Allows for easy iteration and manipulation of collections
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1 hour Time and Distance , Percentage, odd man out , Area, Problem on Ages.

Q1. Tell me about your self , projects why are you leaving old organization
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Q2. Oops concepts , what is Garbage collection
Ans. 
Garbage collection is an automatic memory management process in which the system frees up memory occupied by objects that are no longer in use.
• Garbage collection is a feature of many programming languages, including Java and C#.

• It helps prevent memory leaks and reduces the burden of manual memory management.

• The garbage collector identifies and releases memory that is no longer referenced by any active objects.

• It works ...read more
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Q3. What is Variable
Ans. 
A variable is a named storage location in a computer's memory that can hold a value.
• Variables are used to store and manipulate data in a program.

• They have a name, a type, and a value.

• The value of a variable can be changed during program execution.

• Variables can be used to perform calculations, store user input, or hold intermediate results.

• Examples: int age = 25; float temperature = 98.6; string name = 'John';
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Q1. Tell me about Yourself
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Q2. How soon you can join
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