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Decipher Zone Technologies Interview Questions and Answers

Updated 3 Oct 2024

Decipher Zone Technologies Interview Experiences

2 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Explain OOPS concept
  • Ans. 

    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 principles 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 prop...

  • Answered by AI
  • Q2. Exception hanlding
Round 2 - HR 

(1 Question)

  • Q1. Salary expectation

Interview Preparation Tips

Interview preparation tips for other job seekers - Not so good

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (4)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed before Mar 2023. There was 1 interview round.

Round 1 - Coding Test 

Star pattern coding round. Even Odd number identification using different method.

Interview Preparation Tips

Topics to prepare for Decipher Zone Technologies Java Developer interview:
  • Core Java
  • DSA
Interview preparation tips for other job seekers - Good interview process. Great learning opportunity.

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (4)

Jobs at Decipher Zone Technologies

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Interview questions from similar companies

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. How many types of programming languages?
  • Ans. 

    There are three main types of programming languages: high-level, low-level, and middle-level.

    • High-level languages are closer to human language and easier to understand, like Java, Python, and Ruby.

    • Low-level languages are closer to machine language and harder to understand, like Assembly and Machine Code.

    • Middle-level languages, like C and C++, combine elements of both high-level and low-level languages.

  • Answered by AI
  • Q2. There are three types of programming language. 1 - Hgh Level. 2 - Mid Level. 3 - Low Level.
  • Ans. 

    High level languages are closer to human language, mid level languages are a mix of high and low level, and low level languages are closer to machine language.

    • High level languages are easier to read and write, like Java or Python.

    • Mid level languages provide a balance between high and low level, like C++.

    • Low level languages are closer to machine language, like Assembly.

  • Answered by AI
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is the purpose of the final keyword in Java?
  • Ans. 

    The final keyword in Java is used to restrict the user from changing the value of a variable, making a method not overrideable, or preventing a class from being subclassed.

    • Final variables cannot be reassigned once initialized

    • Final methods cannot be overridden in subclasses

    • Final classes cannot be subclassed

    • Final parameters in a method cannot be modified within the method

  • Answered by AI
  • Q2. The final keyword is used to declare constants, prevent method class inheritance.
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is the diffrence between == and .equals() in java?
  • Ans. 

    In Java, == compares memory addresses while .equals() compares the actual values of objects.

    • == compares memory addresses of objects

    • .equals() compares the actual values of objects

    • Use == for comparing primitive data types

    • Use .equals() for comparing objects like Strings

  • Answered by AI
  • Q2. == : Compares refrences (memory addresses) of objects. .equals() : Compares to content (value) of objects.
  • Ans. 

    The '==' operator compares memory addresses of objects, while the .equals() method compares the content or value of objects.

    • Use '==' for comparing memory addresses of objects.

    • Use .equals() for comparing the content or value of objects.

    • Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will return false, but str1.equals(str2) will return true.

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Write a short java program to check if a number is prime.
  • Ans. 

    Java program to check if a number is prime

    • Create a function that takes an integer as input

    • Check if the number is less than 2, return false

    • Iterate from 2 to the square root of the number, check for divisibility

    • If the number is divisible by any number, return false

    • Otherwise, return true

  • Answered by AI
  • Q2. A prime number is a number greater than 1.....etc
  • Ans. 

    A prime number is a number greater than 1 that can only be divided by 1 and itself.

    • Prime numbers are integers greater than 1

    • They have only two factors: 1 and the number itself

    • Examples of prime numbers: 2, 3, 5, 7, 11, 13

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is the difference between HashMap and ConcurrentHashMap?
  • Ans. 

    HashMap is not thread-safe and allows null keys/values, while ConcurrentHashMap is thread-safe and does not allow null keys/values.

    • HashMap is not thread-safe and can lead to ConcurrentModificationException if modified while iterating.

    • ConcurrentHashMap uses internal locking mechanisms to provide thread-safety.

    • ConcurrentHashMap does not allow null keys/values, while HashMap does.

    • ConcurrentHashMap is more suitable for con

  • Answered by AI
  • Q2. HashMap is not thread-safe, but ConcurrentHashmap is thread-safe and allows concurrent access.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. How does JVM optimize method calls?
  • Ans. 

    JVM optimizes method calls using various techniques like inlining, escape analysis, and virtual method resolution.

    • JVM can inline methods by replacing the method call with the actual code, reducing overhead.

    • Escape analysis helps JVM determine if objects can be allocated on the stack instead of the heap.

    • Virtual method resolution optimizes method calls by caching the resolved method to avoid repeated lookups.

  • Answered by AI
  • Q2. JVM just Just-In-Time (JIT) compilation, method inlining, and escape analysis for optimization.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is Java LAnguage?
  • Ans. 

    Java is a high-level, object-oriented programming language known for its portability and versatility.

    • Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

    • It is object-oriented, allowing for modular and reusable code

    • Java is used for developing a wide range of applications, from web and mobile apps to enterprise systems

    • Popular frameworks and libraries in Java include Spring, Hib

  • Answered by AI
  • Q2. Java is ha High level programming language.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is the difference between abstract class and an interface in Java?
  • Ans. 

    Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

    • Abstract class can have constructors, member variables, and methods, while interface cannot.

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

    • Abstract classes are used to define a common behavior among subclasses, while interfaces are used to define a contract for classes to impl...

  • Answered by AI
  • Q2. An abstract class can have method implements and abstract method, while an interface only contains abstract method (before Java 8) . Abstract classes support single inheritance, whereas interfaces support ...
  • Ans. 

    Abstract classes can have both implemented and abstract methods, while interfaces can only have abstract methods. Abstract classes support single inheritance, interfaces support multiple inheritance.

    • Abstract classes can have both implemented and abstract methods, providing more flexibility in design.

    • Interfaces can only have abstract methods, promoting a more strict contract for implementing classes.

    • Abstract classes sup...

  • Answered by AI

Decipher Zone Technologies Interview FAQs

How many rounds are there in Decipher Zone Technologies interview?
Decipher Zone Technologies interview process usually has 1-2 rounds. The most common rounds in the Decipher Zone Technologies interview process are Coding Test, Technical and HR.
How to prepare for Decipher Zone Technologies interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Decipher Zone Technologies. The most common topics and skills that interviewers at Decipher Zone Technologies expect are JQuery, Javascript, Hibernate, Debugging and Spring Mvc.
What are the top questions asked in Decipher Zone Technologies interview?

Some of the top questions asked at the Decipher Zone Technologies interview -

  1. Explain OOPS conc...read more
  2. Exception hanld...read more

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Decipher Zone Technologies Interview Process

based on 4 interviews

Interview experience

4
  
Good
View more

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Decipher Zone Technologies Reviews and Ratings

based on 39 reviews

3.9/5

Rating in categories

3.7

Skill development

4.1

Work-life balance

3.6

Salary

3.7

Job security

4.0

Company culture

3.4

Promotions

3.9

Work satisfaction

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