Introduction: If you’re preparing for an interview at Persistent.com, a global software product development company, it’s essential to be well-prepared. In this blog post, we’ll explore three questions that were asked during interviews at Persistent.com. These questions will help you gauge the level of difficulty and the types of topics you might encounter during the […]
You have given a string that contains the braces (brackets), both opening and closing braces. You have to find the length of the Longest Valid Parentheses. Input : {}{}{()[]()Output: 6Input : {}{}{()[](){}{}]]{}[]Output: 10Input : {}{}(){}(){()[]()Output: 10 Longest Valid Parentheses https://leetcode.com/problems/longest-valid-parentheses/ Check the running code on https://leetcode.com/playground/39L6d2BS
When working with Java applications, developers may encounter two common exceptions related to class loading issues: ClassNotFoundException and NoClassDefFoundError. Although both exceptions indicate problems with loading classes, they have distinct meanings, causes, and implications. In this blog post, we’ll explore the differences between these two exceptions and provide insights into how to handle and resolve […]
When we design the microservices using Java, we should be following approaches to the design of a new microservice, specifically in terms of the technologies and frameworks you prefer to use. Question 1: What is the first step in designing a new microservice in Java?Answer: The Microservice’s Responsibility: The first step is to clearly define […]
In Java, CompletableFuture is a class that provides a way to perform asynchronous computations and handle their results. It supports various methods that allow you to chain multiple asynchronous operations together and perform actions when the computations are completed. Here’s an explanation of some of the important methods provided by CompletableFuture with examples: Example: Example: […]
In Spring, the application context is responsible for managing the lifecycle of beans, including creating bean instances, wiring dependencies (dependency injection), and providing access to these beans throughout the application. When a class is registered as a Spring bean, the following happens: By registering a class as a Spring bean, it becomes part of the […]
Spring Boot’s auto-configuration feature is a powerful mechanism that aims to automatically configure various components and beans in your application based on the dependencies present on the classpath. This feature saves developers from having to manually configure many common components, reducing boilerplate code and simplifying the application setup process. Here’s an example of how auto-configuration […]
As your Spring application grows in complexity, it’s essential to keep your configuration organized and maintainable. Fortunately, Spring provides several mechanisms to help you achieve this, including @Import and @ComponentScan. In this blog post, we’ll explore how you can use these annotations to split your configuration into multiple classes, making it easier to manage and […]
Here’s a breakdown of the key differences between @Bean and @Component annotations in Spring: Purpose: Usage: Scope: Example: Java In this example: Choosing Between @Bean and @Component: Automatic Detection: Key Points: Example: Java Use code with caution.content_copy In this scenario: Choosing Between Automatic Detection and @Bean: In summary:
Computer Science Vectors by Vecteezy Arithmetic Mean problem was recently asked in a Core Java Professionals interview for Synechron Technologies in Bangalore. Let’s dive into the problem statement and explore a solution in Java. Arithmetic Mean Problem Statement You are given an array A of N integers and an integer S. Your task is to […]