Arcadia Core Java Developer Interview Questions and Answers

Q1. Basic Oops Concepts
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Q2. 4 Pillars of oops
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Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPs
• Encapsulation: Bundling data and methods that operate on the data into a single unit

• 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 features
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C and c++ and data structure

Q1. Question front Data structure, c++ and c
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Q1. Ask all those questions that you want
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Q1. What is java? What is variable?
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Java is a popular programming language used for developing various applications. A variable is a named memory location used to store data.
• Java is an object-oriented language

• It is platform-independent

• Variables in Java have a specific data type

• Variables can be assigned values and their values can be changed

• Example: int age = 25; String name = "John";
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Q2. What is inheritance? types of inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows code reuse and promotes code organization.

• There are different types of inheritance: single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Single inheritance involves a class inheriting from a single base class.

• Multiple inheritance involves...read more
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Q3. 1.Java is a high level language 2.java is a programme is called a set of instructions 3.java run time environment (jre) 4.java is a platform independent. Variable: A variable which is container that some d...read more
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Q4. Inheritance; 1.Acquring the properties of parent class to the child class with out changeing the properties of parent class is known as inheritance 2.inheritanc is a is relationship 3.extends keyword is us...read more
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Inheritance is acquiring properties of parent class to child class without changing parent class properties. It is classified into 5 types.
• Inheritance is a way to reuse code and establish a relationship between classes

• The 'extends' keyword is used to implement inheritance in Java

• Examples of inheritance include a 'Car' class inheriting properties from a 'Vehicle' class

• Single level inheritance involves one parent class a...read more
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May I about you ? Which your qualification and which stream

Python c java etc more about code

Q1. What is array?? Detail in programming
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An array is a collection of similar data types stored in contiguous memory locations.
• Arrays can be one-dimensional or multi-dimensional

• Elements in an array can be accessed using their index

• Arrays can be initialized during declaration or later in the code

• Arrays can be passed as arguments to functions

• Example: int arr[5] = {1, 2, 3, 4, 5};

• Example: char str[10] = "Hello";
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Q2. About programming and Java script
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