coServe Solutions Senior Software Developer Interview Questions and Answers

Q1. What is dependancy Injection?
Ans. 
Dependency Injection is a design pattern where the dependencies of a class are provided from the outside rather than created within the class itself.
• Allows for easier testing by providing mock dependencies

• Promotes loose coupling between classes

• Improves code reusability and maintainability

• Commonly implemented using frameworks like Spring in Java
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Q2. How We maintain security in Application?
Ans. 
Maintaining security in applications involves implementing encryption, authentication, authorization, and regular security audits.
• Implement encryption to protect data in transit and at rest

• Use strong authentication mechanisms like multi-factor authentication

• Implement proper authorization controls to restrict access to sensitive data

• Regularly conduct security audits and penetration testing to identify vulnerabilities
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Q1. Why functional interface when we have interface
Ans. 
Functional interfaces provide a single abstract method for functional programming in Java.
• Functional interfaces allow for lambda expressions and method references to be used as instances of the interface.

• Interfaces with multiple abstract methods cannot be used for lambda expressions.

• Example: java.util.function.Function is a functional interface with a single abstract method apply().
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Q2. Java 8 explain all features in short
Ans. 
Java 8 introduced new features like lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions: Allows writing concise code by enabling functional programming.

• Streams: Provides a way to work with sequences of elements efficiently.

• Functional interfaces: Interfaces with a single abstract method, used for lambda expressions.

• Default methods: Allows adding new methods to interfaces without br
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Q3. If one functional interface can extend another interface
Ans. 
Yes, one functional interface can extend another interface in Java.
• Functional interfaces can extend other functional interfaces in Java.

• The child interface can have only one abstract method, but can inherit default methods from the parent interface.

• Example: interface Parent { void method1(); } interface Child extends Parent { void method2(); }
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Basic php questions and laravel framework

Q1. Basic java , oops
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Q2. Sql , project, behavioral
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Two moderate level question were there. Needed to solve in 1 hr. Very much solvable if you know data structure. This was the screening process after the resume shortlisting.

Q1. Some data structure related question, .Net concepts like OOPS. Some questions on design patterns. Difficulty 7/10.
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Again 2 questions needed to solve in 1 hr (very similar to first screening round)

Q1. Some senior level technical question on design pattern, architecture design based on some real life scenario. Here I was rejected since I didn't have any experience on docker or git which anyway was not me...read more
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Write program on binary search in java

Q1. Asked on oops concepts
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Q2. Asked on java collections, patters
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Moderately difficult

Difficult , basic aptitude questions

Project based schenario development

Q1. Java 8 interview questions Spring boot Microservices GIT and Maven REST
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Q1. Experience Journey CTC discussion
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