Newgen Software Technologies Interview Questions, Process, and Tips

Q1. Explain OOPs concepts.
Ans. 
OOPs concepts are fundamental principles of object-oriented programming that help in designing and implementing software solutions.
• Encapsulation: Bundling data and methods together in a class.

• Inheritance: Creating new classes by inheriting properties and behaviors from existing classes.

• Polymorphism: Ability of an object to take on many forms.

• Abstraction: Hiding complex implementation details and providing a simplified ...read more
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Q2. Write a program to count occurance the letter in a string.
Ans. 
This program counts the occurrence of each letter in a given string.
• Use a HashMap to store the count of each letter.

• Iterate through the characters of the string and update the count in the HashMap.

• Finally, print the count of each letter.
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Q3. Write a SQL query to find third highest salary from employee table.
Ans. 
SQL query to find third highest salary from employee table.
• Use the ORDER BY clause to sort the salaries in descending order

• Use the LIMIT clause to limit the result to the third row

• Use a subquery to exclude the highest and second highest salaries
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Q4. Difference between Array and arraylist.
Ans. 
Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.
• Array has a fixed length, while ArrayList can grow dynamically.

• Array can store both primitive types and objects, while ArrayList can only store objects.

• Array uses square brackets [] for declaration, while ArrayList uses angle brackets <>.

• Array provides direct access to elements using index, while ArrayList provides methods for...read more
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Q5. Explain working of Arraylist.
Ans. 
ArrayList is a dynamic array that can grow or shrink in size. It stores objects and provides methods for adding, removing, and accessing elements.
• ArrayList is part of the Java Collections Framework.

• It is implemented as a resizable array.

• Elements can be added using the add() method.

• Elements can be accessed using the get() method.

• Elements can be removed using the remove() method.

• The size() method returns the number of el...read more
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Q6. What is the default size of an arraylist.
Ans. 
The default size of an ArrayList is 10.
• The default initial capacity of an ArrayList is 10.

• If the number of elements exceeds the initial capacity, the ArrayList automatically increases its size.

• The capacity of an ArrayList can be increased manually using the ensureCapacity() method.
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Q7. Some questions from my resume about my previous experience.
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Q8. The interviewer was stupid and in my opinion they are just wasting your precious time. After the interview they don't provide any updates about the interview.
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Normal logical, verbal, and quantitative ability questions.

Q1. Behavioural questions like how do you manage your team what do you do in thia or that situation
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Q1. Computer Fundamentals like OOPS,DBMS and SQL
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Q2. Questions Based on yourresume
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Q1. Data structure [Array]
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Q2. Core JAVA questions[ exception handling , OOPS , Collections Framework ]
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Q3. JDBC and SQL questions
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Q1. Project discussion
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Q2. Tell me one scenerio under which you did development
Ans. 
Developed a mobile app for tracking daily water intake
• Researched existing water tracking apps for inspiration

• Designed user interface for easy input of water consumption

• Implemented backend database to store user data

• Tested app with beta users for feedback and improvements
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Q1. What are the OOPS concepts
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Q2. MultiThreading, synchronization
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Q1. Tell me about yourself
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