National Informatics Centre Software Developer Interview Questions and Answers

Questions related to software development concepts and technologies.

• Class is a blueprint for creating objects in Java.

• Object is an instance of a class.

• OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction.

• Struts is a framework for developing Java web applications.

• Database DDL commands are used to define database schema, while DML commands are used to manipulate data.

• System testing is a type of testing that evaluates the system as a whole.

• Ajax calls a...read more

Server side state management is the process of storing and managing data on the server side of a web application.

• It involves storing data on the server instead of the client side

• It helps maintain consistency and security of data

• Examples include session management and database management

I am comfortable with a wide range of technologies including Java, Python, JavaScript, and SQL.

• Proficient in Java and Python programming languages

• Familiar with JavaScript and its frameworks such as React and Angular

• Experienced in working with SQL databases

• Comfortable with version control systems like Git

• Knowledgeable in software development methodologies like Agile and Scrum

StringTokenizer is a class in Java that breaks a string into tokens based on a delimiter.

• It is a legacy class that is not recommended to use in new code.

• It is used to split a string into smaller parts based on a delimiter.

• The default delimiter is whitespace, but it can be changed to any character or string.

• It is useful for parsing text files or data that is separated by a specific character.

• Example: StringTokenizer st = new StringTokenizer("Hello World", " "); while (st.hasMo...read more

OOPs concept in Java is a programming paradigm that focuses on objects and their interactions.

• OOPs stands for Object-Oriented Programming

• It emphasizes on encapsulation, inheritance, and polymorphism

• Encapsulation is the process of hiding implementation details from the user

• Inheritance allows a class to inherit properties and methods from another class

• Polymorphism allows objects to take on multiple forms or behaviors

• Example: A car is an object that has properties like color, mo...read more

The components of .NET include the Common Language Runtime, Framework Class Library, and ASP.NET.

• Common Language Runtime (CLR) - manages memory, security, and execution of code

• Framework Class Library (FCL) - collection of reusable classes, interfaces, and value types

• ASP.NET - web application framework for building dynamic web pages and web services

Page life cycle refers to the series of events that occur between the time a user requests a web page and the time the page is rendered on the user's browser.

• Page life cycle consists of several stages such as initialization, loading, rendering, and unloading.

• During initialization, the page is created and controls are initialized.

• During loading, the page is loaded with data and controls are populated.

• During rendering, the page is displayed on the user's browser.

• During unloadin...read more

CLR stands for Common Language Runtime, a component of .NET framework that manages execution of .NET programs.

• CLR is responsible for memory management, security, and exception handling.

• It compiles code into an intermediate language (IL) and then executes it.

• CLR allows for language interoperability, meaning that code written in different languages can be compiled to the same IL and run on the same runtime.

• Examples of languages that can run on CLR include C#, VB.NET, F#, and ma...read more