JellyFish Technologies Java Developer Interview Questions and Answers

It is easy to solve the Aptitude question and some identifying outputs of program.

Q1. What is class?and write a logic for object in a class.
Ans. 
A class is a blueprint for creating objects in object-oriented programming.
• A class defines the properties and behaviors of objects.

• An object is an instance of a class.

• Example: Class 'Car' can have properties like 'color' and 'model', and behaviors like 'drive' and 'stop'.
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Q2. 1.swap two numbers without using temp variable 2.Reverse the string.
Ans. 
Swap two numbers without using temp variable and reverse a string without using built-in functions.
• To swap two numbers without using temp variable, use bitwise XOR operation.

• To reverse a string without using built-in functions, use two pointers approach.

• Example for swapping numbers: a = a ^ b; b = a ^ b; a = a ^ b;

• Example for reversing a string: use two pointers to swap characters from start and end of the string.
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Now, I am preparing for the third round.
So, I don't know the Coding Question.

Q1. Explain process for SDE
Ans. 
The process for Software Development Engineer involves planning, designing, coding, testing, and deploying software solutions.
• Gather requirements from stakeholders

• Create a design based on requirements

• Write code to implement the design

• Test the software for bugs and issues

• Deploy the software for users to use

• Iterate on feedback and make improvements
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Q1. Qs related to javascript
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Q1. Why should we hire you
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Its very good the give a scenario and according to that you have to develop a project

Q1. What is inhertance and its type
Ans. 
Inheritance is a mechanism in OOP where a new class is derived from an existing class.
• It allows the new class to inherit the properties and methods of the existing class.

• There are 4 types of inheritance: Single, Multiple, Hierarchical, and Multilevel.

• Example: A class 'Car' can inherit properties and methods from a class 'Vehicle'.
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Q2. What is Polymorpism and thier type
Ans. 
Polymorphism is the ability of an object to take on many forms. There are two types: compile-time and runtime polymorphism.
• Compile-time polymorphism is achieved through function overloading and operator overloading.

• Runtime polymorphism is achieved through virtual functions and function overriding.

• Polymorphism allows for code reusability and flexibility in object-oriented programming.

• Example of compile-time polymorphism...read more
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Q1. Tell me about yourself
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