Techplement Java Developer Intern Interview Questions and Answers

Q1. Create one Spring boot controller from end to end. No need to create a spring boot project we just want to see the structure and end to end implementation.
View 2 more amswers
Q2. Write a java 8 program to get the characters from a string whose count is 2 or more than 2 e.g. input: baseball , output: b, a, l.
Add your answer
Q3. Why you left your previous organization.
Add your answer
Q4. What is the functional interface
Add your answer
Q5. What are the OOPS concepts. and some questions related to inheritance.
Add your answer
Q6. Asked about the project mentioned in CV (Client project) and asked its architecture.
Add your answer
Q7. Various SQL join types
Add your answer

Q1. Are you ready to relocate to job location
Add your answer
Q2. Why are you leaving your previous organization.
Add your answer
Q3. Expectation about salary
Add your answer

Q1. Internal working of HashMap
View 1 more amswer
Q2. Features of java8
Add your answer
Q3. Use of synchronized keyword
Add your answer
Q4. Difference between failsafe and fail fast and also its implementation
Add your answer
Q5. Coding question : sort an array, use of streams to find names from employee object whose salary is greater than 50000
Add your answer
Q6. Difference between concurrent and generic collection
Add your answer
Q7. What is string pool. What is string literal?
Add your answer
Q8. Security measures used in your project
Add your answer
Q9. What is difference between rest and soap
Add your answer
Q10. What do u mean by REST state
Add your answer
Q11. What is serialization? What is the way to stop serialization?
Add your answer

Q1. Difference between failsafe and faifast
Add your answer
Q2. Difference between concurrent and generic collection
Add your answer
Q3. Security measures used in current project
Add your answer
Q4. Why you are leaving your current organization and follow up questions on that
Add your answer

Q1. Java 8 , java 11 and java 17 features?
Ans. 
Java 8 introduced lambda expressions, Java 11 added local-variable syntax for lambda parameters, and Java 17 included sealed classes and pattern matching.
• Java 8 introduced lambda expressions for functional programming.

• Java 11 added local-variable syntax for lambda parameters to simplify code.

• Java 17 included sealed classes to restrict inheritance and pattern matching for instanceof checks and type casts.
Answered by AI
Add your answer
Q2. Dispatcher servlet, design patterns
Add your answer
Q3. @SpringbootApplication annotation, actuators
Add your answer
Q4. String Coding question with java 8 features such as lambda function and stream api
Add your answer
Q5. Number of words in a string
Ans. 
Count the number of words in a given string.
• Split the string by spaces and count the number of resulting elements.

• Handle edge cases like multiple spaces or empty strings.

• Consider punctuation marks as part of words unless specified otherwise.
Answered by AI
Add your answer
Q6. Microservice design patterns
Add your answer

Q1. Given an array {1, 2, 1, 4, 5, 4, 8, 7}, how can you use Streams to remove duplicates while retaining only the even numbers?
Ans. 
Use Streams to remove duplicates and retain only even numbers from an array.
• Convert the array to a stream using Arrays.stream()

• Use distinct() to remove duplicates

• Filter out odd numbers using filter()

• Collect the result using collect(Collectors.toList())
Answered by AI
Add your answer
Q2. What is the use of Static and final when you will use Static methods
Ans. 
Static methods can be accessed without creating an instance of the class, while final keyword makes the method unchangeable.
• Static methods belong to the class itself, not to any specific instance

• Final keyword ensures that the method cannot be overridden in subclasses

• Static methods are commonly used for utility methods that do not require access to instance variables

• Example: Math class in Java has static methods like Ma
Answered by AI
Add your answer
Q3. What is the difference between @restController and @controller Annotation
Ans. 
The @RestController annotation is used to define RESTful web services while @Controller annotation is used to define MVC controller.
• RestController is a specialized version of Controller used for RESTful web services

• RestController eliminates the need for @ResponseBody annotation

• Controller is used for traditional MVC controller functionality

• RestController returns data directly without needing to go through a view resolve...read more
Answered by AI
Add your answer
Q4. What is microservices why we use it
Ans. 
Microservices are a software development technique where applications are composed of small, independent services that communicate with each other.
• Microservices allow for easier scalability and maintenance of complex applications.

• Each service in a microservices architecture can be developed, deployed, and scaled independently.

• Microservices promote flexibility and agility in software development.

• Examples of companies us...read more
Answered by AI
Add your answer

Q1. What are intermediate and terminal operations
Add your answer
Q2. Predefined functional interface
Add your answer
Q3. Ways to create Thread
Add your answer

The first round was an interview conducted with a GENAI virtual bot.

Q1. Internal architecture of Spring boot, how enable autoconfiguration works
Ans. 
Spring Boot uses autoconfiguration to automatically configure the Spring application based on dependencies and properties.
• Spring Boot autoconfiguration is achieved through @EnableAutoConfiguration annotation

• Autoconfiguration classes are located in the org.springframework.boot.autoconfigure package

• Autoconfiguration classes are conditionally applied based on the presence of specific classes or properties
Answered by AI
Add your answer
Q2. Questions mostly on microservices and coding question on restTemplate
Add your answer

Q1. Difference between hashmap and hash table
Ans. 
HashMap is non-synchronized and allows null values, while HashTable is synchronized and does not allow null values.
• HashMap is non-synchronized, meaning it is not thread-safe, while HashTable is synchronized and thread-safe.

• HashMap allows null values for both keys and values, while HashTable does not allow null keys or values.

• HashMap is generally preferred for non-thread-safe applications, while HashTable is used in mul
Answered by AI
Add your answer
Q2. Static block related questions
Add your answer
Q3. Arraylist and linkedlist question
Add your answer

Onlin test consist pf easy numerical questions

Easy questions not so difficult

Q1. Java oops concept
Add your answer
Q2. Basic sprophramming questions
Add your answer
Q3. Networking firewall cisco
Add your answer

Q1. Personal questions
Add your answer
Q2. Whetehr to willing to work in any locations
Ans. 
Yes, I am willing to work in any location for the right opportunity.
• I am open to relocating for the right job opportunity

• I am flexible and adaptable to new environments

• I believe working in different locations can provide valuable experiences and growth opportunities
Answered by AI
Add your answer