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Northcorp Software Java Developer Interview Questions, Process, and Tips
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?
Northcorp Software Java Developer Interview Experiences
36 interviews found
Anonymous
(2 Questions)
- Q1. What is method overloading?
- Q2. Defining multiple methods with the same name but different parameters.
(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...
- 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...
(2 Questions)
- Q1. What is the D/W Hashmap and ConcurrentHashmap in Java?
- Q2. HashMap is not thread-safe, while concurrentHashMap is thread-safe.
(2 Questions)
- Q1. What is the role of a java developer?
- Q2. Develop, test and maintain java application.
Northcorp Software interview questions for designations
(2 Questions)
- Q1. What is the difference between HashMap and ConcurrentHashMap?
- Q2. HashMap is not thread-safe, but ConcurrentHashmap is thread-safe and allows concurrent access.
Get interview-ready with Top Northcorp Software Interview Questions
(2 Questions)
- Q1. How does JVM optimize method calls?
- Q2. JVM just Just-In-Time (JIT) compilation, method inlining, and escape analysis for optimization.
(2 Questions)
- Q1. What is the purpose of the volatile keyword?
- Q2. It ensures visibility nd prevents instruction reordering in multi-threading.
(2 Questions)
- Q1. What is the diffrence between == and .equals() in java?
- Q2. == : Compares refrences (memory addresses) of objects. .equals() : Compares to content (value) of objects.
(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
- 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
(2 Questions)
- Q1. What is the purpose of the final keyword in Java?
- Q2. The final keyword is used to declare constants, prevent method class inheritance.
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Northcorp Software Java Developer Interview Process
based on 35 interviews
1 Interview rounds
- Technical Round
Java Developer Interview Questions from Similar Companies
Northcorp Software Java Developer Reviews and Ratings
based on 39 reviews
Rating in categories
|
Software Developer
10
salaries
|  ₹2 L/yr - ₹7.2 L/yr |
|
Devops Engineer
9
salaries
| ₹1.5 L/yr - ₹3.6 L/yr |
|
Data Scientist
8
salaries
| ₹1.8 L/yr - ₹7.2 L/yr |
|
Senior Java Developer
5
salaries
| ₹14 L/yr - ₹22 L/yr |
|
Senior Software Engineer
5
salaries
| ₹9.5 L/yr - ₹23 L/yr |
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