10+ Enpro Industries Interview Questions and Answers

Java is a popular programming language used for developing various applications. OOPs concepts refer to Object-Oriented Programming principles.

• Java is a high-level, class-based, object-oriented programming language.

• OOPs concepts include Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation refers to bundling data and methods that operate on the data into a single unit.

• Polymorphi...read more

Factorial calculation using recursion in a programming language

• Define a function that takes an integer as input

• Base case: if input is 0, return 1

• Recursive case: return input multiplied by factorial of input-1

• Example: factorial(5) = 5 * factorial(4) = 5 * 4 * factorial(3) = ... = 5 * 4 * 3 * 2 * 1 = 120

Static variables belong to the class itself, while final variables cannot be changed after initialization.

• Static variables are shared among all instances of a class

• Final variables cannot be reassigned once initialized

• Static variables are initialized only once at the start of the program

• Final variables must be initialized when declared

Arrays are fixed in size, while ArrayLists can dynamically resize. Arrays are faster for accessing elements, while ArrayLists offer more flexibility.

• Arrays have a fixed size, while ArrayLists can dynamically resize.

• Arrays are faster for accessing elements, while ArrayLists offer more flexibility in terms of adding, removing, and manipulating elements.

• Example: String[] namesArray = new String[5]; ArrayList namesList = new ArrayList<>();

The length of a table cannot be calculated using a bottle, bike, tire, and ball. To create an app for shortest distance, use algorithms like Dijkstra's or A*.

• Table length cannot be calculated with given items, need actual measurements

• For shortest distance app, use algorithms like Dijkstra's or A*

• Implement user input for start and end points, calculate shortest path

OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

• Inheritance: Ability of a class to inherit properties and behavior from another class

• Polymorphism: Ability to present the same interface for different data types

• Abstraction: Hiding the complex implementation details and showing only the necessary f...read more

Fibonacci series program generates a sequence where each number is the sum of the two preceding ones.

• Start with two initial numbers, usually 0 and 1.

• Add the two previous numbers to get the next number in the sequence.

• Repeat this process to generate the Fibonacci series.

A class is a blueprint for creating objects in object-oriented programming. An object is an instance of a class.

• A class defines the properties and behaviors of objects.

• An object is a specific instance of a class.

• Objects can have their own unique data and methods, while classes provide a template for creating objects.

• Example: Class 'Car' may have properties like 'color' and 'model', while an object of class 'Car' could be 'Toyota Corolla'.

The area of a table is the measurement of the surface space it occupies.

• To calculate the area of a table, you need to measure the length and width of the table and then multiply the two measurements together.

• For example, if a table is 3 feet long and 2 feet wide, the area would be 3 x 2 = 6 square feet.

• The area of a table is important for determining how much space it will take up in a room or how many items can be placed on top of it.

Abstraction is the process of removing unnecessary details and focusing on essential characteristics.

• Abstraction allows developers to work at a higher level of understanding without needing to worry about specific implementation details.

• It helps in simplifying complex systems by breaking them down into smaller, more manageable parts.

• For example, in programming, object-oriented programming languages use abstraction to create classes that represent real-world entities while hid...read more