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Infosys Java Developer Interview Questions, Process, and Tips for Experienced
Top Infosys Java Developer Interview Questions and Answers for Experienced
- Q1. write a code to filter out loans with incomplete status using java 8 features.
- Q2. What is java and what is inheritance and what is oops concepts and what is method
- Q3. What is polymorphism in both overloading and overriding way?
Infosys Java Developer Interview Experiences for Experienced
37 interviews found
Anonymous
(2 Questions)
- Q1. What is daemon thread?
- Ans.
A daemon thread is a low priority thread that runs in the background and does not prevent the JVM from exiting when all user threads have finished.
Daemon threads are used for tasks that need to run continuously in the background, such as garbage collection.
They are automatically terminated by the JVM when all user threads have finished execution.
To create a daemon thread in Java, you can call the setDaemon(true) method
- Q2. Profile in springboot
Skills evaluated in this interview
Selected
I applied via Job Portal and was interviewed in Aug 2024. There were 2 interview rounds.
(1 Question)
- Q1. Functional interface, hashmap
(1 Question)
- Q1. Salary discussion
(1 Question)
- Q1. What are @annotations in springboot? explain about @springBootApplication
- Ans.
Annotations in Spring Boot are used to provide metadata about the code. @SpringBootApplication is a meta-annotation that combines @Configuration, @EnableAutoConfiguration, and @ComponentScan.
Annotations in Spring Boot are used to simplify configuration and reduce boilerplate code.
@SpringBootApplication is a meta-annotation that enables the auto-configuration feature in Spring Boot.
It combines @Configuration, @EnableAut...
Skills evaluated in this interview
I applied via Referral and was interviewed in Apr 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Java 8 related questions with some basic coding using java 8.
- Q2. Print some thing java 8 lambda expression
- Ans.
Using lambda expressions in Java 8 to print a message
Use the lambda syntax (parameters) -> { body } to define the behavior
Example: () -> System.out.println("Hello, World!")
(1 Question)
- Q1. Project related questions and some coding questions
(1 Question)
- Q1. Work Details, education details
Skills evaluated in this interview
Infosys interview questions for designations
I applied via Referral and was interviewed in Mar 2024. There was 1 interview round.
(5 Questions)
- Q1. What is Functional Interface? What is Flat Map? What is Method Reference? What is stream API
- Ans.
Functional Interface is an interface with only one abstract method. Flat Map is used to flatten nested collections. Method Reference is a shorthand notation for lambda expressions. Stream API is used to process collections of objects.
Functional Interface is an interface with a single abstract method, such as Runnable or Comparator.
Flat Map is a method in Java that is used to flatten nested collections, like List
- Q2. What is Flat Map
- Ans.
FlatMap is a method in Java that transforms each element of a stream into a new stream and then concatenates all the streams into a single stream.
FlatMap is used to flatten nested collections or maps into a single collection.
It is commonly used in Java streams to process and transform data efficiently.
Example: List
- Q3. What is Stream API
- Ans.
Stream API is a feature in Java that allows processing collections of objects in a functional style.
Stream API provides a way to perform operations on collections like filter, map, reduce, etc.
It supports functional programming paradigms like lambda expressions and method references.
Example: List
names = Arrays.asList("Alice", "Bob", "Charlie"); Stream stream = names.stream();
- Q4. How you handle logs in previous company
- Q5. What is functional interface
- Ans.
A functional interface is an interface that contains only one abstract method and can be used as a lambda expression.
Functional interfaces can have multiple default or static methods, but only one abstract method.
Examples of functional interfaces in Java include Runnable, Callable, and ActionListener.
Functional interfaces are often used with lambda expressions to provide a concise way of implementing single abstract me
Interview Preparation Tips
Skills evaluated in this interview
Get interview-ready with Top Infosys Interview Questions
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. How can you write custom exception in Java?
- Ans.
To write a custom exception in Java, create a new class that extends Exception or a subclass of Exception.
Create a new class that extends Exception or a subclass of Exception.
Add a constructor to the custom exception class to pass a message to the superclass constructor.
Throw the custom exception using the 'throw' keyword in your code.
Handle the custom exception using try-catch blocks or propagate it up the call stack.
- Q2. Explain internal working of HashMap
- Ans.
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
HashMap internally uses an array of linked lists to store key-value pairs.
When a key-value pair is added, the key is hashed to find the index in the array where it will be stored.
If multiple keys hash to the same index, a linked list is used to handle collisions.
To retrieve a value, the key is hashed again to find th...
Interview Preparation Tips
Skills evaluated in this interview
Java Developer Jobs at Infosys
I applied via Job Portal and was interviewed in Aug 2024. There was 1 interview round.
Coding test time duration was 45 mins. Question was related to string array checking the good arrray on condition of no occurrence of characters.
AG Tech
(2 Questions)
- Q1. Java 8 features
- Q2. Lambda function
(2 Questions)
- Q1. Prerequisites: Payment gateway If your order fails and payment has been deducted, how do you manage this situation.
- Ans.
In case of order failure with payment deducted, refund the payment and investigate the issue.
Initiate refund process for the deducted payment
Investigate the reason for the order failure
Communicate with the customer about the issue and resolution
Ensure the payment gateway is functioning correctly to prevent future occurrences
- Q2. What are constructors and its types
- Ans.
Constructors are special methods used to initialize objects in Java.
Constructors have the same name as the class and do not have a return type.
Types of constructors include default constructor, parameterized constructor, and copy constructor.
Default constructor is provided by Java if no constructor is defined.
Parameterized constructor takes parameters to initialize an object with specific values.
Copy constructor create...
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Infosys Java Developer Interview Process for Experienced
based on 20 interviews in last 1 year
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Rating in categories
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Technology Analyst
56k
salaries
|  ₹3 L/yr - ₹11 L/yr |
|
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49.3k
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| ₹2.8 L/yr - ₹9.2 L/yr |
|
System Engineer
38.8k
salaries
| ₹2.5 L/yr - ₹5.5 L/yr |
|
Technical Lead
30.6k
salaries
| ₹5.2 L/yr - ₹19.5 L/yr |
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27.1k
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| ₹6.2 L/yr - ₹16.8 L/yr |
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