TO THE NEW Python and Django Developer Interview Questions and Answers

What is java
What' is object composition
What is class

Q1. What' is about your self
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Q2. What is javascript What is jdk What is while loop
Ans. 
Javascript is a scripting language used for web development. JDK is a Java Development Kit. While loop is a control flow statement.
• Javascript is used for client-side scripting, creating interactive web pages, and adding functionality to web applications.

• JDK is a software development kit used for developing Java applications.

• While loop is a control flow statement used to execute a block of code repeatedly as long as a s...read more
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Q3. What is java What is object
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Java is a high-level programming language used for developing applications. An object is an instance of a class.
• Java is platform-independent and can run on any device with a JVM.

• Java is an object-oriented language that supports encapsulation, inheritance, and polymorphism.

• Objects are created from classes and have properties and methods.

• Example: A car class can have objects like BMW, Audi, etc. with properties like colo...read more
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Q1. Please give an introduction of yourself.
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Q2. Your comfortable programming/coding language
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Q3. What is session in java?
Ans. A session is a state consisting of several requests and responses between the client and the server
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Q4. What is Java Class Library?
Ans. JCL is a set of dynamically loadable libraries that JVM can call at runtime
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Q5. Types of datatypes in Java
Ans. 
Java has several types of datatypes including primitive and reference types.
• Primitive datatypes include int, double, boolean, char, etc.

• Reference datatypes include classes, interfaces, arrays, etc.

• Examples: int age = 25; String name = "John"; int[] numbers = {1, 2, 3};

• Wrapper classes like Integer, Double, Boolean, etc. are used to wrap primitive types.
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Q6. One question was on SQL. (I had mentioned SQL in one of my academic projects)
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Q7. Please tell me What is HTML?
Ans. HTML stands for HyperText Markup Language which is used to create webpages.
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Q8. How to change a div background colour?
Ans. . { background-color : red; }
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Java progaming, coding

Q1. Basic question on Java, Spring MVC, Spring Boot and Microservice
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Round duration - 60 minutes
Round difficulty - Easy

This was a technical round with questions on Coding and core java based questions.

Q1. 
Word Frequency Counter
Given a string 'S' consisting of words, your task is to calculate how many times each word appears in the string. A word is a series of one or more non-space characters. In 'S', wor...read more
Ans. 
Count the frequency of each word in a given string.
• Split the string by spaces to get individual words.

• Use a hashmap to store each word and its frequency.

• Iterate through the words and update the hashmap accordingly.

• Print out the words and their frequencies in any order.
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Q2. What is the difference between Comparable and Comparator in Java?
Ans. 
Comparable is an interface used for natural ordering, while Comparator is an interface used for custom ordering in Java.
• Comparable interface is used to define the natural ordering of objects. It is implemented by the class whose objects are to be compared.

• Comparator interface is used to define custom ordering of objects. It is implemented by a separate class.

• Comparable interface has a single method, compareTo(), which ...read more
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Round duration - 60 minutes
Round difficulty - Easy

This was a technical + managerial round.

Q1. What are the advantages of multithreading in Java?
Ans. 
Multithreading in Java allows for concurrent execution of multiple tasks, improving performance and responsiveness.
• 1. Improved performance by utilizing multiple CPU cores efficiently.

• 2. Enhanced responsiveness as tasks can run concurrently without blocking each other.

• 3. Simplified coding for complex tasks by breaking them into smaller threads.

• 4. Facilitates better resource utilization and scalability.

• 5. Examples: paral...read more
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Q2. What is the comparison between Azure and AWS cloud service providers?
Ans. 
Azure and AWS are two major cloud service providers offering similar services but with some differences in features and pricing.
• AWS is the oldest and most widely used cloud service provider, while Azure is catching up quickly.

• Azure is known for its strong integration with Microsoft products and services, while AWS has a wider range of third-party integrations.

• AWS has a larger global presence with more data centers worl...read more
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Round duration - 30 minutes
Round difficulty - Easy

This was a typical HR round.