Tuesday, June 18, 2024

Geeks For Geeks Interview Questions

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Why Spring Boot Is So Popular Or What Are The Features Offered By Spring Boot

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Spring Boot is an opinionated framework built on top of Spring. Its main aim is to reduce the boilerplate configuration in Spring. By doing so you can get started quickly and focus more on writing the business logic. Some of the other features which make it popular are as below,

  • We can now build a standalone application with Spring Boot
  • Embedded webserver . Makes development environment setup easy
  • Starter poms simplify the maven configuration and dependencies are handled in the parent pom
  • Production-ready health and metrics services through the actuator

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Advanced Java Programming Interview Questions For Experienced Professionals

  • What is HTTP Tunneling?
  • What is the function of the IOC container in spring?
  • Define a cookie. What are the differences between a session and a cookie?
  • Which is the front controller class of Spring MVC?
  • What are the states of an object in hibernate?
  • What are implicit objects?
  • Write a syntax to convert a given collection to a SynchronizedCollection.
  • What is hash-collision in a HashTable? How is it handled in Java?
  • The above java coding interview questions help you stregthen your knowledge and concepts in Java. The list of interview questions for java programming language covers all important & most commonly asked java interview questions for beginners, Freshers as well as experienced job seekers extensively. This Java Coding Interview Questions and Answers PDF will revolve around the essential and core basics of Java.

    Do Check Related JAVA Tutorials:

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    How Does Spring Work Explain The Request Processing Flow

    Dispatcher Servlet is the heart of Spring Application. It abstracts away mapping of HTTP requests to processing classes, parsing of requests and generation of responses. Dispatcher servlet looks up to context configuration for the bean declarations. It sets up all supporting beans like Handler Mapping, View Resolvers, Local Context and so on. Based on the configuration it dispatches the request to different controllers. It is responsible for writing the response back by making use of view templates.

    What Is Actuator And How Do You Configure

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    This module of Spring boot provides production-ready monitoring features. The simple way to enable spring-boot-actuator is to include spring-boot-actuator-stater.

    Actuator endpoints let you monitor and interact with your application. Who can access the actuator endpoints can be controlled by application security configurations. Spring Boot Actuator endpoints can be exposed either on JMX or HTTP.

    Some examples to actuator endpoints are,

    Allows to gracefully shutdown the application

    There are many other actuator endpoints. Read through Spring documentation to gain more understanding.

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    Minimum Spanning Tree problem: Given connected graph G with positive edge … Given two values k1 and k2 and a root pointer to a Binary Search …http://geeksforgeeks.org/
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    What Are Template Statements

    Template statements are properties or methods used in HTML for responding to user events. With these template statements, the application that you create or are working on, can have the capability to engage users through actions such as submitting forms and displaying dynamic content.

    For example,

    < button =”deleteHero”> Delete hero< /button>

    The template here is deleteHero. The method is called when the user clicks on the button.

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    What Are Pipes In Angular

    Pipes are simple functions designed to accept an input value, process, and return as an output, a transformed value in a more technical understanding. Angular supports several built-in pipes. However, you can also create custom pipes that cater to your needs.

    Some key features include:

  • Pipes are defined using the pipe | symbol.
  • Pipes can be chained with other pipes.
  • Pipes can be provided with arguments by using the colon sign.
  • What Does Annotation @springbootapplication Do

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    This annotation is used on the main class to enable quite a lot of other annotations like,

    • @Configuration enables java-based Spring configuration
    • @ComponentScan enable component scanning
    • @EnableAutoConfiguration enables Spring Boots autoconfiguration.

    @SpringBootApplication combines the above annotations and readies up the Spring Boot application.

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    How Many Tags Can Be Used To Separate A Section Of Texts

    Three tags are used to separate the texts.

    • < br> tag – Usually < br> tag is used to separate the line of text. It breaks the current line and conveys the flow to the next line
    • < p> tag – The < p> tag contains the text in the form of a new paragraph.
    • < blockquote> tag – It is used to define a large quoted section. If you have a large quotation, then put the entire text within < blockquote> ………….< /blockquote> tag.

    Work On Required Soft Skills Resume Building And Hr Round

    While preparing out for a tech interview, along with core technical skills, youre also required to enhance the relevant soft and analytical skills to get an edge over other candidates. Also, it would be more beneficial if you create a professional and enriching resume and prepare yourself well with the general questions asked during the HR Round.

    Check out the related articles provided below:

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    Difference Between Conditional Annotation And Profiles

    Both conditional annotations and profiles can be used to conditionally configure spring beans.

    @Profile annotation can be used to check the conditions based on the environment only. Different application configurations can be loaded based on the environment.

    @Conditional is more generalized and gives more fine-grained control over the bean configuration.

    How Would You Create Your Own Instagram

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    Instagram is a photo-sharing application that provides some custom filters to enhance your photo quality. Your application should have photo upload functionality, tagging photos for search, and some basic filters. If you could add share or social network that could be great.

    Btw, if you stuck, you can see the free solution provided on the Educative Grokking System design course as well.

    7. How do you design global file sharing and storage apps like Google Drive or Dropbox? These are used to store and share files, photos, and other media. How do you go about designing things like allowing users to upload/view/search/share files or photos? track permissions for file sharing, and allow multiple users to edit the same document?

    If you like YouTube video, here is a nice one which will teach you how to design a Dropbox or Google Drive or any other document hosting solution:

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    What Are Some Common Lists That Are Used When Designing A Page

    There are many common lists which are used to design a page. You can choose any or a combination of the following list types:

    • Ordered list – The ordered list displays elements in numbered format. It is represented by < ol> tag.
    • Unordered list – The unordered list displays elements in bulleted format. It is represented by < ul> tag.
    • Definition list – The definition list displays elements in definition form like in dictionary. The < dl> , < dt> and < dd> tags are used to define description list.

    Geeksforgeek Data Structure Interview Questions:

    A well-defined syllabus is an excellent start to prep you up in the right direction. A GeeksforGeeks interview question data structures covers a wide area of topics for coding. While preparing for programming interview questions you could segregate them into 14 main chapters.

  • Knowledge of the last index of 1
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    Top Python Interview Questions

    Python is one of the widely used programming languages. Its features like simplicity, user-friendly, collection of libraries, etc. are increasing the number of coders using it to develop applications. In this article, we will cover different basic concepts of Python and these can help you in exam or interview preparation.

    Programming Interview Questions For Linked List

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    In information technology linked list refers to a linear Collection of data whose arrangement is not given by the physical position in the memory. Here are the top practice interview questions collected from an ideal GeeksforGeek interview question paper.

  • Predicting middle element in a given linked list
  • Reversing a given linked list
  • Rotation of a linked list
  • Reversal of a linked list in groups of a particular size
  • Intersection point prediction in Y shaped building list
  • Detecting loops in a given linked list
  • Removing loops in the given linked list
  • Implementation of queue and stack in a given linked list
  • Deleting data structure without header point
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    What Do You Understand By Scope In Angular

    The scope in Angular binds the HTML, i.e., the view, and the JavaScript, i.e., the controller. It as expected is an object with the available methods and properties. The scope is available for both the view and the controller. When you make a controller in Angular, you pass the $scope object as an argument.

    Top 20 Greedy Algorithms Interview Questions

    Greedy is an algorithmic paradigm that builds up a solution piece by piece, always choosing the next piece that offers the most obvious and immediate benefit. Greedy algorithms are used for optimization problems.

  • Boruvkas algorithm
  • This article is contributed by Ayushmaan Bansal. If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to [email protected]. See your article appearing on the GeeksforGeeks main page and help other Geeks.

    Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.


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    Some Of The Important Asked Geeksforgeek Interview Questions From Backtracking And Big Magic

    In computer, terminology backtracking is a general algorithm used to find solutions for some constraint satisfaction computational problems. While Bit magic refers to the minimum number of sleeping adjacent bits required to make a given binary string equal. Most commonly asked data structure GeeksforGeeks interview questions from this topic are-

  • N Queen problem solving
  • Coding in maximum subset XOR.
  • Some Of The Important Data Structures Geeksforgeeks Questions On Greedy

    GeeksForGeeks Interview Questions [ Geek for Geek ] 2021

    In Computer Science a greedy algorithm is any procedural algorithm that follows the problem-solving methodology of making the locally optimal choice at each step. Some of the important programming interview questions asked from this area are as follows-

  • Problems of GeeksforGeeks interview inactivity selection
  • Prediction of N meetings in one room
  • Knowledge in coin piles and maximize toys
  • Finding page faults in LRU
  • Predicting the largest number possible
  • Minimizing the height
  • Box stacking and road cutting.
  • Coding of the path in a matrix
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    Basic Java Interview Questions For Freshers With Answers

  • What are Loops in Java? What are three types of loops?
  • What are the various access specifiers for Java classes?
  • What is a singleton class? Give a practical example of its usage.
  • What is an infinite Loop? How infinite loop is declared?
  • What is data encapsulation and whats its significance?
  • What is Final Keyword in Java? Give an example.
  • What is the difference between an Inner Class and a Sub-Class?
  • What is the difference between continue and break statement?
  • What is the difference between double and float variables in Java?
  • Whats the purpose of Static methods and static variables?
  • What Are Services In Angular

    Angular Services perform tasks that are used by multiple components. These tasks could be data and image fetching, network connections, and database management among others. They perform all the operational tasks for the components and avoid rewriting of code. A service can be written once and injected into all the components that use that service.

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    What Are The New Updates With Angular10

    • Older versions of TypeScript not supported – Previous versions of Angular supported typescript 3.6, 3.7, and even 3.8. But with Angular 10, TypeScript bumped to TypeScript 3.9.
    • Warnings about CommonJS imports – Logging of unknown property bindings or element names in templates is increased to the “error” level, which was previously a “warning” before.
    • Optional strict setting – Version 10 offers a stricter project setup when you create a new workspace with ng new command.

    ng new –strict

    NGCC Feature – Addition of NGCC features with a program based entry point finder.

    • Deprecated APIs – Angular 10 has several deprecated APIs.
    • Bug fixes – With this Angular 10 version, there have been a number of bug fixes, important ones being the compiler avoiding undefined expressions and the core avoiding a migration error when a nonexistent symbol is imported.
    • New Default Browser Configuration – Browser configuration for new projects has been upgraded to outdo older and less used browsers.

    What Is The Canvas Element In Html5

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    The < canvas> element is a container that is used to draw graphics on the web page using scripting language like JavaScript. It allows for dynamic and scriptable rendering of 2D shapes and bitmap images. There are several methods in canvas to draw paths, boxes, circles, text and add images. For Example:

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    Mention Some Of The Spring Boots Test Features

    Spring Boot has improved testing with number of annotations and utilities. Spring boot test support is provided by two modules spring-boot-test and spring-boot-test-autoconfiguration. The dependency spring-boot-starter-test imports both of these modules.

    All JUnit annotations are valid to write unit tests. @SpringBootTest test runs the controllers on a random port in a fully qualified spring container and lets us write integration tests. To inject specific port use @LocalServerPort annotation.

    Use @WebMvcTest to auto-configure the Spring MVC infrastructure and lets us test the Spring MVC controllers.

    @JpaDataTest can be used to test the JPA applications or repository classes.

    What Is Bootstrap How Is It Embedded Into Angular

    Bootstrap is a powerful toolkit. It is a collection of HTML, CSS, and JavaScript tools for creating and building responsive web pages and web applications.

    There are two ways to embed the bootstrap library into your application.

  • Angular Bootstrap via CDN – Bootstrap CDN is a public Content Delivery Network. It enables you to load the CSS and JavaScript files remotely from its servers.
  • Angular Bootstrap via NPM – Another way to add Bootstrap to your Angular project is to install it into your project folder by using NPM .
  • npm install bootstrap

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    Core Computer Science Subjects

    Moving ahead, you need to get yourself prepared for core CS Subjects like Operating Systems, Computer Networks, and Database Management Systems as you are often asked several questions in the interviews based on these subjects. The organized tutorials for each core CS subject are provided below:

    Course Link: OS DBMS CN for SDE Interview Preparation

    Explain The Different Strategies Used To Handle The Exception

    Real time Oracle database administration interview questions

    To manage Exceptions Spring offers below classes,

    • ExceptionHandlerExceptionResolver generic exception handler
    • DefaultHandlerExceptionResolver handler to handle set of predefined exceptions
    • SimpleMappingExceptionResolver exception handler to map custom exceptions to error pages. Existing as part of the framework since 2003.

    Below are the different strategies to handle exceptions in Spring

    Return an error message to be displayed This is the simple way of handling exception. The exception handle method is responsible for returning the appropriate error message. Below is the code snippet

    @RequestMappingpublic String doSomething @ExceptionHandler@ResponseBodypublic String handleException 

    Return a dedicated error page This strategy lets us return a generic error page and hides all the exceptions from the end-user. Use the same annotation @ExceptionHandler, from the method return the error page.

    Return custom error message and code A custom error code and message can be return from the exception handler method. This can be done by adding response status and reason to the annotation @ResponseStatus.

    Redirect to custom error page with a custom message This uses real HTTP redirect to navigate to error page.

    Exception handling with @ControllerAdvice This allows you to centralize the exception handling across the application not just at the controller level. You can read up Spring documentation to understand more about Controller advice.

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    Mention Some Of The Configuration Parameters Available In Spring Boot

    Spring boot lets us specify various configuration properties either in the application.properties file or in application.yml file or through the command line.

    We can configure log levels, server ports, actuator endpoints, cache, database parameters, JMX and so on. It offers a long list of configurations and I recommend you to go through the Spring documentation to have a good understanding.

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