Published in Javarevisited·PinnedMember-onlyHow to do Asynchronous Programming With JavaUsing CompletableFuture to implement an asynchronous use case — Originally Published in https://asyncq.com/ Introduction When we write code generally we end up writing synchronized code most of the time. But in many situations, it makes sense not to block the execution and execute the code asynchronously. In this article, we will consider one use case where writing asynchronous code makes…Java2 min readJava2 min read
Published in Javarevisited·PinnedMember-onlyHow to Implement Function Composability In JavaFunctional Composability with Lambdas in Java — Originally Published in https://asyncq.com/ Introduction Composition is one of the attractive features that can be built using Lambdas in Java. Often time we need to compose different functions in order to build higher-level functions. In this article, we will deep dive to understand function composability and how we can achieve it…Java3 min readJava3 min read
PinnedMember-only20+ Java Exercises For Practice ( Updated Frequently )Best Java Exercises to Improve Java Skills — Introduction This Page consists of a list of Java exercises that will help to increase java knowledge. The target audience is from Beginners to Intermediate Level. I will keep adding and updating this list moving forward. If you have any recommendations don’t hesitate to write them down in the comment section. …Java Practice Excercise4 min readJava Practice Excercise4 min read
Published in Javarevisited·1 day agoMember-onlyHow to Make Unique ID Generator Microservice Using Spring BootUsing UUID to generate a unique ID — Originally Published in https://asyncq.com/ Introduction In this article, we will learn how we can use Spring boot and Java UUID class to generate a unique Identifier. Keep in mind that this is a very basic implementation that just touches upon some concepts and builds on top of that. In future articles…Java5 min readJava5 min read
Published in Level Up Coding·3 days agoMember-onlyHow to Implement Idempotent API (Part 1)Discussing idempotency concept and implementation design — Originally Published in https://asyncq.com/ Introduction As we are moving towards more microservice base architecture and interacting with different services and having a dependency on them is a very common design. Since now we have more loosely coupled microservices that spans across different region, we have network partition to take care of…Idempotent5 min readIdempotent5 min read
Published in Javarevisited·4 days agoMember-onlyHow to Insert Bulk Data into MySQL Using JavaUsing PrepapredStatement to Insert Batch data — Originally Published in asyncq.com Introduction As a developer, we interact with databases in various capacities. Often our action comprises select, insert, and update operations. When data size grows we often find bottlenecks in our application code and work on improving performance. In this article, we will discuss how to insert data…Java3 min readJava3 min read
Published in Javarevisited·4 days agoMember-onlyJava Interview Practice Problem (Beginner): Bag of FruitsSolving with Imperative and functional styles both — Problem Statement We have been given a bag of fruits. We need to find all the fruits that are more than the given threshold. For example, the list of the below fruits contains 3 types of fruits and each with a different occurrence, apple →6, grapes →2, kiwi →5, so the answer…Java Interview Questions4 min readJava Interview Questions4 min read
6 days agoMember-onlyWhat is Ruby's method with a bang (!)Understanding Rub’s bang/exclamation mark — Originally Published in https://asyncq.com/ Introduction I have been doing Java development for 6+ years of my software developer career. But recently I started learning Ruby and Ruby on Rails. As a Java developer, there are lots of similarities and surprises when I jump on the ruby boat, one of them seeing…Ruby3 min readRuby3 min read
Jan 23Member-onlyHow to Read SFTP files in RubyUsing net-sftp gem to read remote files in ruby — Originally Published in https://asyncq.com/ Introduction SFTP is very common way to transfer the file from one server to another. Often as a client we recieve SFTP server endpoint to pull the file to our system from other system. In this article we will use ruby client to read the remote file…Net Sftp3 min readNet Sftp3 min read
Published in Javarevisited·Jan 20Member-onlyNext Greater Element I — Leetcode 496 (Java Solution)Java Solution for Leetcode 496 — Introduction In this article, we will solve Leetcode 496 using Java. We will solve it using a stack data structure. Problem Statement The next greater element of some element x in an array is the first greater element that is to the right of x in the same array. You are given two…Leetcode Easy4 min readLeetcode Easy4 min read
