Impressico Business Solutions Software Developer Trainee Interview Questions and Answers

It is a google meet based aptitude and coding test there were no logical coding questions if you know about the concept of oops

Q1. It was mainly on collections Framework, some basic questions of SQL, OOPS concept
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Q2. What are abstraction and interface
Ans. 
Abstraction is the process of hiding implementation details while interface defines a contract for a class.
• Abstraction is achieved through abstract classes and methods

• Interface is a collection of abstract methods and constants

• Abstraction allows for easier maintenance and modification of code

• Interface allows for multiple inheritance in Java

• Abstraction and interface are both used to achieve abstraction in programming
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Q3. Difference between method overloading and overriding
Ans. 
Method overloading and overriding are two concepts in object-oriented programming that allow methods to have multiple implementations.
• Method overloading is when multiple methods have the same name but different parameters.

• Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• Overloading is resolved at compile-time while overriding is resolved at...read more
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Q4. Program to print Fibonacci series, prime numbers, pattern(high-level), basic recursion questions
Ans. 
Program to print Fibonacci series, prime numbers, pattern(high-level), basic recursion questions
• Fibonacci series can be printed using a loop or recursion

• Prime numbers can be found using a loop and checking for divisibility

• Pattern printing can be done using nested loops and conditional statements

• Basic recursion questions can include factorial, sum of digits, etc.
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