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Northcorp Software Java Developer Interview Questions, Process, and Tips

Updated 24 Feb 2025

Top Northcorp Software Java Developer Interview Questions and Answers

  • Q1. An abstract class can have method implements and abstract method, while an interface only contains abstract method (before Java 8) . Abstract classes support single inher ...read more
  • Q2. What is the difference between abstract class and an interface in Java?
  • Q3. What is the D/W Hashmap and ConcurrentHashmap in Java?
View all 43 questions

Northcorp Software Java Developer Interview Experiences

37 interviews found

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

(2 Questions)

  • Q1. What is method overloading?
  • Ans. 

    Method overloading is when multiple methods in a class have the same name but different parameters.

    • Allows multiple methods with the same name but different parameters in a class

    • Parameters can differ in number, type, or order

    • Compile-time polymorphism

    • Example: void print(int a) and void print(String s)

  • Answered by AI
  • Q2. Defining multiple methods with the same name but different parameters.
  • Ans. 

    Method overloading allows defining multiple methods with the same name but different parameters.

    • Methods must have different parameter types or number of parameters.

    • Return type does not matter for method overloading.

    • Example: void print(int num) and void print(String text) are valid overloads.

  • Answered by AI

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Q3. Which should be preferred between String and StringBuffer when th ... read more
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Q5. 2. What will happen if hashcode only returns a constant? How will ... read more
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is the D/W Hashmap and ConcurrentHashmap in Java?
  • Ans. 

    D/W Hashmap and ConcurrentHashmap are both implementations of the Map interface in Java, with the latter being thread-safe.

    • D/W Hashmap stands for 'Doubly-Linked Hashmap' and is a custom implementation of a hashmap in Java that maintains insertion order.

    • ConcurrentHashmap is a thread-safe implementation of the Map interface in Java, allowing multiple threads to access and modify it concurrently without causing data corru

  • Answered by AI
  • Q2. HashMap is not thread-safe, while concurrentHashMap is thread-safe.
  • Ans. 

    HashMap is not synchronized and not thread-safe, while ConcurrentHashMap is thread-safe and allows concurrent access.

    • HashMap is not synchronized, so it is not safe to use in a multi-threaded environment without external synchronization.

    • ConcurrentHashMap uses internal synchronization mechanisms to ensure thread safety, allowing multiple threads to access and modify it concurrently.

    • ConcurrentHashMap is designed to handle...

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

(2 Questions)

  • Q1. What is the role of a java developer?
  • Ans. 

    A Java developer is responsible for designing, developing, and maintaining Java-based applications.

    • Designing and implementing Java applications

    • Writing efficient and maintainable code

    • Testing and debugging code

    • Collaborating with team members to solve technical problems

    • Keeping up-to-date with Java technologies and best practices

  • Answered by AI
  • Q2. Develop, test and maintain java application.
  • Ans. 

    Develop, test, and maintain Java applications to ensure functionality and performance.

    • Write clean and efficient code following best practices

    • Test the application thoroughly to identify and fix bugs

    • Regularly update and maintain the application to meet changing requirements

  • Answered by AI

Northcorp Software interview questions for designations

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 (5)

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 (4)

 PHP Developer

 (4)

 Software Developer

 (2)

 Javascript Developer

 (2)

 Python Developer

 (1)

 UI Developer

 (1)

 DOT NET Developer

 (7)

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.

Get interview-ready with Top Northcorp Software Interview Questions

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

(2 Questions)

  • Q1. What is the purpose of the volatile keyword?
  • Ans. 

    The volatile keyword in Java is used to indicate that a variable's value will be modified by different threads.

    • Ensures visibility of changes made by one thread to other threads

    • Prevents compiler optimizations that could reorder instructions

    • Useful for variables accessed by multiple threads without synchronization

    • Example: volatile boolean flag = true;

  • Answered by AI
  • Q2. It ensures visibility nd prevents instruction reordering in multi-threading.
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
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.

Northcorp Software Interview FAQs

How many rounds are there in Northcorp Software Java Developer interview?
Northcorp Software interview process usually has 1-2 rounds. The most common rounds in the Northcorp Software interview process are Technical, Resume Shortlist and HR.
How to prepare for Northcorp Software Java Developer 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 Northcorp Software. The most common topics and skills that interviewers at Northcorp Software expect are Java, Spring, MySQL, Hibernate and JPA.
What are the top questions asked in Northcorp Software Java Developer interview?

Some of the top questions asked at the Northcorp Software Java Developer interview -

  1. An abstract class can have method implements and abstract method, while an inte...read more
  2. What is the difference between abstract class and an interface in Ja...read more
  3. What is the D/W Hashmap and ConcurrentHashmap in Ja...read more

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Northcorp Software Java Developer Interview Process

based on 36 interviews

1 Interview rounds

  • Technical Round
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Northcorp Software Java Developer Salary
based on 5 salaries
₹1.8 L/yr - ₹9 L/yr
19% less than the average Java Developer Salary in India
View more details

Northcorp Software Java Developer Reviews and Ratings

based on 36 reviews

4.2/5

Rating in categories

4.2

Skill development

4.2

Work-life balance

4.2

Salary

4.2

Job security

4.2

Company culture

4.2

Promotions

4.2

Work satisfaction

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