Mojj Engineering Systems Senior QA QC Engineer Interview Questions and Answers

Basic java questions

Q1. Explain Linked list implementation and stack
Ans. 
Linked list is a data structure where each element points to the next element. Stack is a data structure that follows Last In First Out (LIFO) principle.
• Linked list implementation involves creating nodes with data and a pointer to the next node.

• Stack implementation involves pushing elements onto the stack and popping them off in reverse order.

• Example: Linked list - 1 -> 2 -> 3 -> NULL, Stack - push(1), push(2), push(3)
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Q2. Oops concepts in java
Ans. 
Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the imp...read more
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