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I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.
Reflection in Java allows programmatic access to information about the fields, methods, and constructors of loaded classes.
Reflection provides the ability to examine and modify the behavior of classes, interfaces, and objects at runtime.
It allows accessing and manipulating fields, methods, and constructors that are otherwise inaccessible.
Reflection is commonly used in frameworks, libraries, and tools that require runti...
I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.
Reflection class in Java provides a way to examine or modify the behavior of methods, classes, interfaces at runtime.
Reflection allows accessing private fields, methods, and constructors of a class.
It enables dynamic loading of classes and creation of new objects.
Used in frameworks like Spring and Hibernate for dependency injection and object-relational mapping.
Example: Class.forName("com.example.MyClass") returns the
The contract between hashCode and equals method is that if two objects are equal according to equals method, their hash codes must be equal as well.
The hashCode method returns an integer value that represents the object's unique identifier.
The equals method is used to compare two objects for equality.
According to the contract, if two objects are equal, their hash codes must be equal.
If the hashCode method is overridden...
The equals() method compares the content of two strings, while the == operator compares their references.
The equals() method returns true if the content of two strings is the same.
The == operator returns true if the references of two strings are the same.
Example: String str1 = "Hello"; String str2 = new String("Hello"); str1.equals(str2) returns true, but str1 == str2 returns false.
I applied via Company Website and was interviewed in Oct 2023. There was 1 interview round.
OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
OOPs focuses on creating objects that interact with each other to solve problems
Key concepts include encapsulation, inheritance, polymorphism, and abstraction
Encapsulation involves bundling data and methods that operate on the data into a single unit
Inheritance allows one class to inherit proper...
I applied via Recruitment Consulltant and was interviewed before Sep 2022. There were 2 interview rounds.
Scan-IT interview questions for popular designations
I applied via Company Website and was interviewed before Dec 2019. There was 1 interview round.
SQL query to retrieve top 10 salaries from employee table.
Use SELECT statement to retrieve data from employee table
Use ORDER BY clause to sort the data in descending order based on salary
Use LIMIT clause to limit the result set to top 10 salaries
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I applied via Naukri.com and was interviewed in Feb 2024. There was 1 interview round.
There were 5 questions and we need to solve 4 questions in java. Mostly Array and string based.
I applied via Campus Placement and was interviewed in Jul 2022. There were 3 interview rounds.
Their are 30 questions which one has to done in 30 mins
I applied via Walk-in and was interviewed in Apr 2024. There were 2 interview rounds.
It was based on core knowledge
I applied via Referral and was interviewed in Dec 2023. There was 1 interview round.
The types of AHU modes include cooling mode, heating mode, and ventilation mode.
Cooling mode: AHU cools the air before circulating it throughout the building.
Heating mode: AHU heats the air before circulating it throughout the building.
Ventilation mode: AHU circulates fresh air throughout the building without heating or cooling.
Heatwheel and Energy wheel are both types of energy recovery ventilation systems used in HVAC systems, but they differ in their specific mechanisms and applications.
Heatwheel uses a rotating wheel with a desiccant coating to transfer heat and moisture between incoming and outgoing air streams, while Energy wheel uses a rotating wheel with a matrix of heat-absorbing material to transfer heat only.
Heatwheel is more effec...
In primary pump systems without a bypass valve, we can use a variable frequency drive (VFD) to control the pump speed.
Use a variable frequency drive (VFD) to adjust the speed of the pump based on system demand
VFDs can help maintain system pressure and flow without the need for a bypass valve
VFDs can also improve energy efficiency by matching pump speed to actual system requirements
Types of chiller operating modes include constant speed, variable speed, and hybrid mode.
Constant speed mode: Chiller operates at a fixed speed regardless of load.
Variable speed mode: Chiller adjusts speed based on load requirements for energy efficiency.
Hybrid mode: Combines constant and variable speed modes for optimal performance.
Examples: Centrifugal chillers often operate in variable speed mode for energy savings.
posted on 29 Oct 2024
I applied via Naukri.com and was interviewed before Oct 2023. There was 1 interview round.
DSA questions mostly on problem solving these questions need proper practice
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