IDBI Intech Limited Assistant Manager Operations Interview Questions and Answers for Experienced

Question related to dilr, aptitude were asked.

Easy level questions were asked

Q1. Teall me about urself
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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 metho...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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Q1. Java 8, stream api, spring boot
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Q1. Java 8 ,stream api , Microservice, spring boot ,
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Q1. Stream api program,duplicate character find in given string how many way you can solve this problem, puzzles 25 horses
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Q1. How to improve performance issue your application,How to find proformance problem in system, How to join us
Ans. 
To improve performance in an application, identify performance problems and join our team.
• Analyze application code and identify bottlenecks

• Use profiling tools to measure performance

• Optimize database queries and improve indexing

• Implement caching mechanisms

• Upgrade hardware or infrastructure if necessary

• Join our team to collaborate on performance improvements
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Q1. Remove duplicates from the list
Ans. 
Remove duplicates from an array of strings
• Create a new set to store unique values

• Iterate through the array and add each element to the set

• Convert the set back to an array to remove duplicates
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Q2. Inheritance related theoretical
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Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions on Core Java concepts.

Q1. What are the primitive data types in Java?
Ans. 
Primitive data types in Java are basic data types that are not objects.
• Primitive data types include int, double, float, char, boolean, byte, short, and long.

• Examples: int num = 10; double price = 19.99; char letter = 'A'; boolean flag = true;
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Q2. What is the JVM?
Ans. 
JVM stands for Java Virtual Machine, it is an abstract computing machine that enables a computer to run Java programs.
• JVM is responsible for converting Java bytecode into machine code that can be executed by the computer's processor.

• It provides a platform-independent execution environment for Java programs.

• JVM manages memory, handles garbage collection, and provides security features for Java applications.

• Examples of J...read more
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Q3. Why is Java considered an object-oriented language?
Ans. 
Java is considered object-oriented because it supports the four main principles of OOP: encapsulation, inheritance, polymorphism, and abstraction.
• Java allows for the creation of classes and objects, which encapsulate data and behavior together.

• Inheritance is supported in Java, allowing classes to inherit attributes and methods from other classes.

• Polymorphism in Java allows objects to be treated as instances of their pa...read more
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Q4. What is JIT in Java?
Ans. 
JIT stands for Just-In-Time compiler in Java, which compiles Java bytecode into native machine code at runtime.
• JIT compiler improves the performance of Java applications by compiling bytecode into native machine code on-the-fly.

• It identifies and optimizes frequently executed code paths, resulting in faster execution.

• JIT compiler is a part of Java Virtual Machine (JVM) and helps in achieving high performance without the...read more
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Q1. Opps concepts hibernate
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Q2. Comparator comparable , spring boot
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Mathematical and logical questions

Based on coding and programming

Q1. Oops concept in java
Ans. 
Oops concept in java
• Object-oriented programming paradigm

• Encapsulation, Inheritance, Polymorphism, Abstraction

• Classes and Objects

• Access Modifiers

• Interfaces and Abstract Classes
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Q2. Oops concept in c++ programming language
Ans. 
OOPs concepts in C++ include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects to take on multiple forms.

• Encapsulation hides the implementation details of a class from other objects.

• Abstraction focuses on the essential features of an object and hides the unnecessary details.

• Example: A car class can inheri...read more
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Q1. What was your hobbies
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Q2. Tell about yourself??
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Q3. What role ur in interested in??
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