TEKsystems Java Developer Interview Questions and Answers

20 aptitude,20 comunication,4 program questions

General topics . topics about online class vs office line class

Q1. In this round also they mainly check communication.after that basic questions about the what you put on your resume
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Q1. General round. In this round they told about the company and bond
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30 multiple choice questions

Two coding questions

Q1. Oops questions like main principles of oops
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Q1. Deep in project
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Q1. Self intro, family background,some hr questions
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Basic aptitude questions

Basic coding questions

Q1. Asking basic questions
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Q2. Java pattern program
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Q3. String in build program
Ans. 
String in build program refers to the process of concatenating multiple strings to create a final output.
• Use StringBuilder or StringBuffer for efficient string concatenation.

• Avoid using '+' operator for concatenating large number of strings.

• Consider using String.format() for formatting strings with placeholders.
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Q4. Java basic concepts
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Q1. Annotations used in Springboot project
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Annotations are used in Springboot project for various purposes such as dependency injection, mapping requests, and handling exceptions.
• Annotations are used to provide metadata to the Spring framework.

• Some commonly used annotations in Springboot are @Autowired, @RestController, @RequestMapping, @ExceptionHandler, and @Service.

• Annotations help in reducing the boilerplate code and make the code more readable and maintain...read more
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Q2. Core java question on exception handling, methods, OOPS
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General Aptitude round based on numbers,verbal,time

Any language u can use but need to solve 5 problems

JOY of energy project checks only solid principles asks question for every letter you type for developing a feature

Q1. What is static intializer?
Ans. 
A static initializer is a block of code that is used to initialize the static variables of a class.
• Static initializers are executed only once when the class is loaded into memory.

• They are useful for initializing static variables that require complex calculations or external resources.

• Static initializers are defined using the 'static' keyword followed by a block of code enclosed in curly braces.
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Q2. What is Mock MVC ?
Ans. 
Mock MVC is a testing framework for Spring MVC applications.
• It allows testing of controllers without deploying the application.

• It provides a simulated environment for testing.

• It can be used to test request mappings, request parameters, and response body.

• MockMvc is the main entry point for testing with Mock MVC.
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Q1. Basic Questions about Springboot
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Q2. Basic Questions about Java8
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