In Java, there are three different ways to read input from a user in a command-line environment (console). Use the buffer reader class This is the Java Classic input method introduced in JDK 1.0. Using this method by wrapping the System.in (standard input stream) in an InputStreamReader (wrapped in a BufferedReader), we can read the…
The update() method updates the value in an existing document in the MongoDB collection. When you update a document, the values of the _id fields remain the same. By default, db.collection. update() method to update a single document. Include the option multi:true to update all documents that match a given query. This method can be used for a…
Here’s an example weakSet.add() method. The output is as follows: true weakSet.add() is a built-in function in JavaScript that is used to add a weak set of objects at the end of an object. With the WeakSet object, you can store weakly saved objects in a collection. The syntax is as follows: Parameter: It accepts the parameter “A”,…
The insertMany() function is used to insert multiple documents into a collection. It accepts a series of documents to be inserted into a collection. Installation of the Mongoose module: File name :index.js Steps to run the program: The project structure will look like this: Make sure the mongoose module is installed with the following command: npm install…
1) Shortlisted based on the summary. 2) Aptitude test hosted on HackerEarth. 20 mcqs (C and quantitative questions) were scored negative (+1/-1). 3) A score of 10 is a safe score. Shortlisted candidates are required to come to their office for an interview. I tried 14 out of 20 questions. The problem is tricky, and…
Ready to get your dream job as an Angular developer? Or, just planning to switch careers and become an Angular developer? In this article, we’ll look at some of the common Angular questions that you might ask in your Angular interview for your role as an Angular developer. In addition to these concept-based questions, one…
Creative programming is a programming method that aims to create something expressive and visually appealing, rather than something purely functional. This type of programming method is used to create live artwork, graphical simulations and visualization algorithms. There are many tools and libraries for creative or visual programming, of which the processing is the most widely used….
Introduce There are several functions in Linux that only work when a specific file or directory exists. Bash is a shell that interprets commands. You can use one How does Bash check if a file or directory exists? In this guide, learn how to use the bash command to check if a file or directory exists….
Every year, they run this competition for students, which basically has a total of 3 rounds followed by a pre-placement interview for PowerProgrammer. The first two rounds are competitive coding and are held on HackerRank for final year B.Tech students. Online Round: There are first two rounds of online coding: Second round online: The questions are…
Introduction to the Server Load Balancer Guide Modern websites and applications generate a lot of traffic and serve a large number of client requests at the same time. Load balancing helps fulfill these requests and makes websites and applications responsive and reliable. In this article, you’ll learn what load balancing is, how load balancing works,…