MasterCard Software Engineer Interview Questions, Process, and Tips

Q1. Explain java8 concepts
Ans. 
Java8 introduced new features like lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions allow you to write more concise code by providing a way to pass functions as arguments.

• Streams provide a way to work with sequences of elements and perform operations like filter, map, reduce, etc.

• Functional interfaces are interfaces with a single abstract method, which can be implemented using ...read more
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Q2. Internal working of hashmap
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HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses an array of buckets to store key-value pairs.

• Keys are hashed to determine the index where the value will be stored.

• In case of hash collisions, a linked list or a balanced tree is used to store multiple values at the same index.

• HashMap allows null keys and values.

• Example: HashMap<String, Intege...read more
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2 coding questions, 1hr

2 Codes were Given , after that 2 technical + 1 hr

Q1. Explain Spring MVC structure
Ans. 
Spring MVC is a framework for building web applications in Java.
• Model: Represents the data of the application

• View: Represents the UI of the application

• Controller: Handles the user input and updates the model and view accordingly

• DispatcherServlet: Front controller that receives all incoming requests and routes them to the appropriate handler

• RequestMapping: Annotation used to map web requests to specific handler methods
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Q1. Spring Security
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Q1. Basic java,project related
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Q2. Oops collections
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