4W Technologies Software Developer Interview Questions, Process, and Tips

Basics java coding test
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Easy questions

Q1. What is Oops concept . What Type of overloading in java.
Ans. 
Oops concept is a programming paradigm that focuses on objects and their interactions.
• Oops concept stands for Object-Oriented Programming

• It emphasizes on the use of objects to represent real-world entities

• It includes concepts like encapsulation, inheritance, polymorphism, and abstraction

• Objects have properties (attributes) and behaviors (methods)

• Objects can interact with each other through methods and messages

• Java is a...read more
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Q2. What is constructor.
Ans. 
A constructor is a special method that is called when an object is created to initialize its properties.
• Constructors have the same name as the class they belong to.

• They can take parameters to set initial values for the object's properties.

• If a class does not have a constructor, a default constructor is provided by the compiler.

• Constructors can be overloaded to provide multiple ways to create objects of the same class.

• E...read more
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Q3. What is class in java
Ans. 
A class in Java is a blueprint for creating objects that have properties and methods.
• A class is a user-defined data type that encapsulates data and behavior.

• It is used to create objects that can interact with each other.

• A class can have fields, constructors, and methods.

• Fields are variables that hold data.

• Constructors are used to initialize objects.

• Methods are functions that perform actions on objects.

• Example: class Ca...read more
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Writing 4 out of 5 coding questions in any programming language.
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Q1. Explaining your projects to HR
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Q1. What is java what is oops what is collection framework
Ans. 
Java is a popular programming language known for its portability and versatility. OOPs is a programming paradigm based on objects and classes. Collection framework provides a set of classes and interfaces for handling collections of objects.
• Java is a high-level, object-oriented programming language developed by Sun Microsystems.

• OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects...read more
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