10+ Hexaware Technologies Software Engineer Interview Questions and Answers

Data structures are a way to organize and store data efficiently.

• Data structures are used to store and manipulate data in a structured manner.

• They provide different ways to access and perform operations on the data.

• Examples include arrays, linked lists, stacks, queues, trees, and graphs.

To add a column in copybook, modify the copybook definition and update all programs that use it.

• Identify the copybook that needs modification

• Add the new column to the copybook definition

• Update all programs that use the modified copybook

• Test the changes thoroughly before deploying to production

Find the second largest element in a given list of arrays using C programming.

• Iterate through the array and compare each element with the current maximum and second maximum

• If the element is greater than the current maximum, update the second maximum and maximum

• If the element is greater than the second maximum but less than the maximum, update the second maximum

• Return the second maximum

Inheritance is a way to create new classes based on existing classes. Encapsulation is the practice of hiding data and methods within a class. Data hiding is the act of making data private to prevent direct access.

• Inheritance allows for code reuse and promotes a hierarchical structure of classes.

• Encapsulation helps to prevent accidental modification of data and promotes modular code.

• Data hiding is achieved through access modifiers such as private and protected.

• Example: A Car ...read more

Use the anchor tag <a> with the href attribute to link a web page to another in HTML.

• Use the <a> tag with the href attribute to specify the URL of the page you want to link to.

• Add the text or image that will serve as the clickable link between the opening and closing <a> tags.

• You can also use the target attribute to specify where the linked page will open (e.g. in a new tab).

Automation saves time and increases accuracy.

• Automation can run tests faster than humans

• Automation can perform repetitive tasks without getting tired or making mistakes

• Automation can simulate large amounts of data to test edge cases

• Automation can provide consistent results

• Manual testing is prone to human error and can be time-consuming

• Automation can free up human testers to focus on more complex testing tasks

In Java, multithreading can be processed using the Thread class or implementing the Runnable interface.

• Create a new thread by extending the Thread class or implementing the Runnable interface.

• Start the thread using the start() method.

• Use synchronization mechanisms like synchronized blocks or locks to handle shared resources safely.

• Join threads to wait for them to finish execution.

• Use thread pools for managing multiple threads efficiently.

There are various types of databases available such as relational, NoSQL, graph, and document-oriented databases.

• Relational databases use tables to store data and have a predefined schema.

• NoSQL databases are non-relational and can handle unstructured data.

• Graph databases are used to store and manage relationships between data.

• Document-oriented databases store data in documents, usually in JSON format.

• Examples include MySQL, MongoDB, Neo4j, and Cassandra.

Use a SQL query with GROUP BY and HAVING clause to find duplicates in a table.

• Use GROUP BY to group rows with the same values together

• Use HAVING COUNT(*) > 1 to filter out non-duplicate rows

• Select the columns you want to check for duplicates in the SELECT statement

A semaphore is a synchronization construct used to control access to a shared resource by multiple processes or threads.

• Semaphores can have an integer value representing the number of available resources.

• They can be used to prevent race conditions and ensure mutual exclusion.

• Operations on semaphores include wait (P) and signal (V).

OOPs concepts are the principles of Object-Oriented Programming that help in designing and implementing software.

• Abstraction

• Encapsulation

• Inheritance

• Polymorphism

• Class

• Object

• Method

• Message Passing

Odd even program in C

• Use modulus operator to check if a number is even or odd

• If the remainder is 0, the number is even, else it's odd

• Print the result accordingly

To raise a defect, follow these steps:

• Identify the defect and reproduce it if necessary

• Document the defect with a clear and concise description

• Assign a severity level to the defect

• Assign the defect to the appropriate team or individual

• Track the status of the defect until it is resolved

Joins in Oracle SQL are used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Use ON keyword to specify the join condition.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;