Posistrength Software Solution Private Limited Interview Questions, Process, and Tips

Q1. Angular A to Z Hooks,Services,Api Integration,component communication
Add your answer
Q2. Html ,CSS basic
Add your answer

Q1. Server and web api related questions
Add your answer

Q1. Can you provide details about yourself and your educational background?
Add your answer
Q2. About Winjit technologies
Add your answer

Print a specific pattern using any programming language.

Q1. What is a class in Object-Oriented Programming (OOP)?
Ans. 
A class in OOP is a blueprint for creating objects, defining their properties and behaviors.
• Classes are templates for creating objects in OOP

• They define the properties (attributes) and behaviors (methods) of objects

• Objects are instances of classes, each with its own unique data

• Inheritance allows classes to inherit properties and behaviors from other classes

• Encapsulation ensures that the data is hidden and can only be a...read more
Answered by AI
Add your answer
Q2. What is the difference between an abstract class and an interface?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

• A class can only extend one abstract class, but can implement multiple interfaces.

• Abstract classes are used to define common characteristics of subclasses, while interfaces are used to define contracts for...read more
Answered by AI
Add your answer
Q3. What is joining and creating an inner join query?
Ans. 
Joining is combining data from two or more tables based on a related column, while an inner join query retrieves only the matching records.
• Joining is used to combine data from multiple tables in a database.

• Inner join query retrieves only the records that have matching values in both tables.

• Syntax for inner join: SELECT columns FROM table1 INNER JOIN table2 ON table1.column = table2.column;

• Example: SELECT orders.order_i...read more
Answered by AI
Add your answer

Q1. Introduce yourself
Ans. 
I am a Java Developer with 5 years of experience in developing web applications using Java, Spring, and Hibernate.
• 5 years of experience in Java development

• Proficient in Spring and Hibernate frameworks

• Strong understanding of web application development
Answered by AI
Add your answer
Q2. Tell me about the project you worked on in your previous company and the role you played as part of the team and your day to day responsibilities as a Java Developer in the project
Ans. 
Developed a web-based inventory management system using Java, Spring, and Hibernate
• Designed and implemented database schema using Hibernate

• Developed RESTful APIs using Spring framework

• Worked on front-end development using HTML, CSS, and JavaScript

• Collaborated with team members to troubleshoot and resolve issues

• Participated in code reviews and testing
Answered by AI
Add your answer
Q3. What are Interfaces and Abstract classed in Java and code an example of an interface on Notepad
Ans. 
Interfaces and Abstract classes in Java are used for achieving abstraction and defining contracts for classes to implement.
• Interfaces in Java are like blueprints for classes, defining methods that must be implemented by classes that implement the interface.

• Abstract classes are classes that cannot be instantiated and can have both abstract and concrete methods.

• Example of an interface in Java: public interface Shape { ...read more
Answered by AI
Add your answer
Q4. You are given a string, name and an integer which is year of birth. You need to print the reverse of year of birth followed by the reverse of name.
Ans. 
Reverse the year of birth and name, then print them in that order.
• Reverse the year of birth using StringBuilder.reverse() method

• Reverse the name using StringBuilder.reverse() method

• Print the reversed year of birth followed by the reversed name
Answered by AI
Add your answer
Q5. What are Threads in Java
Ans. 
Threads in Java are lightweight sub-processes that allow concurrent execution within a single process.
• Threads allow multiple tasks to be executed simultaneously in a Java program.

• Threads share the same memory space and resources within a process.

• Example: Creating a new thread using the Thread class or implementing the Runnable interface.
Answered by AI
Add your answer

Q1. Explain briefly about your project at your previous company
Ans. 
Developed a web application for inventory management system using Java Spring framework
• Used Java Spring framework for backend development

• Implemented RESTful APIs for communication between frontend and backend

• Utilized MySQL database for storing inventory data
Answered by AI
Add your answer
Q2. Given a ArrayList of String containing some name with some name repeated. Write the code on a notepad printing only the single occurrence of each name in the ArrayList. iImplement the same using Java 8 Str...read more
Ans. 
Using Java 8 Streams API to print single occurrences of names in an ArrayList of Strings.
• Use stream() method on the ArrayList to create a stream of elements.

• Use filter() method to filter out elements that occur more than once.

• Use distinct() method to get only unique elements.

• Use forEach() method to print each unique element.
Answered by AI
Add your answer
Q3. Given a ArrayList of String containing some names with some repeated names. Write the code on a notepad printing each name and the number of occurrences of each name in the ArrayList
Ans. 
Code to print each name and the number of occurrences in an ArrayList of Strings.
• Iterate through the ArrayList and use a HashMap to store the count of each name.

• Print each name along with its count from the HashMap.
Answered by AI
Add your answer
Q4. What are lambda expressions in Java
Ans. 
Lambda expressions in Java are a concise way to represent anonymous functions.
• Lambda expressions are used to provide implementation of functional interfaces.

• They enable you to treat functionality as a method argument, or code as data.

• Syntax: (parameters) -> expression or (parameters) -> { statements; }

• Example: (int a, int b) -> a + b
Answered by AI
Add your answer
Q5. What are functional interfaces in Java
Ans. 
Functional interfaces in Java are interfaces with only one abstract method, used for lambda expressions and functional programming.
• Functional interfaces have only one abstract method, but can have multiple default or static methods.

• They are used for lambda expressions and functional programming in Java.

• Examples include java.lang.Runnable, java.util.Comparator, and java.util.function.Function.
Answered by AI
Add your answer
Q6. What are Streams in Java
Ans. 
Streams in Java are sequences of elements that support functional-style operations such as filter, map, reduce, etc.
• Streams are not data structures, but rather a way to interact with collections of objects.

• They allow for efficient processing of large amounts of data.

• Streams can be sequential or parallel, allowing for concurrent processing.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); Stream stream = n
Answered by AI
Add your answer
Q7. Do you have any questions for me
Add your answer

Q1. Tell me about yourself
Ans. 
I am a Java Developer with 5 years of experience in developing web applications and implementing solutions using Java technologies.
• 5 years of experience in Java development

• Strong knowledge of web application development

• Experience in implementing solutions using Java technologies
Answered by AI
Add your answer
Q2. Few questions related to my education and my placements
Add your answer
Q3. What was your CTC at your previous company
Ans. 
My previous CTC was confidential as per company policy.
• CTC was confidential as per company policy

• I am unable to disclose my previous CTC

• Previous CTC information is not available
Answered by AI
Add your answer
Q4. Do you have any questions for me
Add your answer

Q1. What is runtime polymorphism, and can you provide a code example to illustrate it?
Ans. 
Runtime polymorphism allows a subclass to provide a specific implementation of a method that is already provided by its parent class.
• Runtime polymorphism is achieved through method overriding, where a subclass provides its own implementation of a method that is already defined in its superclass.

• The method to be overridden must have the same name, return type, and parameters in both the superclass and subclass.

• When an o...read more
Answered by AI
Add your answer
Q2. Streams in java
Ans. 
Streams in Java provide a way to process collections of objects in a functional style.
• Streams are sequences of elements that support various operations like filter, map, reduce, etc.

• They can be created from collections, arrays, or generate elements dynamically.

• Streams can be sequential or parallel, allowing for efficient processing of large datasets.

• Example: List<String> names = Arrays.asList("Alice", "Bob", "Cha...read more
Answered by AI
Add your answer
Q3. How do we create threads in Java, and how do we invoke them?
Ans. 
Threads in Java are created by extending the Thread class or implementing the Runnable interface, and invoked using the start() method.
• Threads can be created by extending the Thread class and overriding the run() method.

• Threads can also be created by implementing the Runnable interface and passing an instance of the class to a Thread object.

• Threads are invoked by calling the start() method on the Thread object.
Answered by AI
Add your answer
Q4. What is a Rest Template and how is it used?
Ans. 
Rest Template is a class in Spring that simplifies making HTTP requests and handling responses.
• Rest Template is part of the Spring framework in Java.

• It can be used to make HTTP requests to RESTful web services.

• It simplifies the process of making HTTP calls and handling responses.

• Rest Template can handle GET, POST, PUT, DELETE, etc. requests.

• Example: RestTemplate restTemplate = new RestTemplate();
Answered by AI
Add your answer

Q1. Technical question on NodeJS and JavaScript part and the n coding round
Add your answer
Q2. What is callback hell
Add your answer