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Interview Questions and Answers for 'Zonoff' - 2 question(s) found
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Basic and Very Frequently asked.
Q1.
What is Polymorphism in Java ?
Core Java
Ans. Polymorphism means the condition of occurring in several different forms.
Polymorphism in Java is achieved in two manners
1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas
2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding.
Sample Code for overloading
Sample Code for overriding
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 polymorphism  object oriented programming (oops)  oops concepts  oops concepts
Asked in 108 Companies
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Static Polymorphic in Java is achieved through ..
Method Overloading
Method Overriding
Variable Overloading
Variable Overriding
Runtime Polymorphism in Java is achieved through ..
Method Overloading
Method Overriding
Variable Overloading
Variable Overriding
Related Questions
What are points to consider in terms of access modifier when we are overriding any method?
If everything is an object , Cant we declare every object as
Object obj = new String();
Why do we need polymorphism in Java ?
How does java identifies which method to be called in method overriding or runtime polymorphism, when both methods share the same name and signature ?
Shouldn't we make a class with all static members is its just expected to be executed as a standalone program with just one thread. Moreover Lets assume that there is no runtime Polymorphism required and there is no need for serialization ?
Is this Polymorphism ?
Map<String, List<String>> inventoryManagerCountMap = new HashMap<String, ArrayList<String>>();
When are static and instance methods resolved ? During compile time or Runtime ?
Which of the following is not the difference between Singleton and Static class ( Class with static members only ) ?
Which of the following do you think is the primary reason you would never use a static class even the application doesn't need multiple requests or threads ?
a. Serialization
b. Runtime Polymorphism
c. Lazy Loading
d. Memory
Frequently asked at Manhattan Associates ( Based on 2 feedback )
Q2.
What is a Lambda Expression ? What's its use ?
Core Java
Ans. Its an anonymous method without any declaration.
Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code.
It promotes Developer productivity, Better Readable and Reliable code.
Sample Code for lambda
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 java   java8   lambda expression   architecture
Asked in 58 Companies
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Which Java version introduced Lambda expressions ?
Java 5
Java 7
Java 8
Java 9
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