In the world of Java programming, enums (short for enumerations) are a powerful feature that provides a way to define a set of named constants. These constants are members of a specific data type, making enums a great choice when you need to represent a fixed set of values. 🏆 Let’s dive into the details […]
In this blog, we’ll explore how to implement a queue using two stacks and a stack using two queues. We’ll provide implementations in both Java and Python, following clean code practices for better readability and maintainability. 💻 Queue Implementation Using Stacks 🥞 A queue is a linear data structure that follows the First-In-First-Out (FIFO) principle. […]
LRU (Least Recently Used) cache is a caching strategy that evicts the least recently used items when the cache reaches its capacity limit. It is widely used in various applications, such as web browsers, databases, and operating systems, to improve performance by keeping frequently accessed data in memory and avoiding expensive operations like disk reads […]
In this blog post, we’ll explore a common problem in string manipulation: finding the first non-repeating character in a given string. We’ll solve this problem using Java and adhere to clean code principles along the way. 🎯 Problem Statement Given an input string, we need to find the first character that does not repeat itself […]
The Observer Design Pattern: Keeping Objects in Sync In software development, it’s common to have objects that need to be notified when the state of another object changes. For example, you might have a data model object that needs to notify multiple user interface components when its data is updated. The Observer Design Pattern provides […]
1. What Is the Prototype Pattern? The Prototype Design Pattern is a creational design pattern that serves several important purposes in software development. The Prototype pattern is generally used when: Let’s dive into the details of this pattern. 2. When to Use Prototype Design Pattern The Prototype Design Pattern is useful when you need to […]
Introduction to HashMap In Java, HashMap is a part of the Collections Framework, which allows storing items in key-value pairs. Keys are unique in the map. It provides efficient retrieval, insertion, and deletion operations. Before diving into specific methods, it’s essential to understand that HashMap relies on hashing, where it uses the key’s hash code […]
Introduction Interviews for software development positions often feature coding challenges that test candidates on various aspects of programming, from basic syntax to complex problem-solving skills. In this post, we explore two intriguing Java programming challenges centred around the use of HashMaps. These challenges were reportedly part of an interview process at eClerx, a global IT […]
Section: Fundamentals In OOAD, what is a weak ‘has-a’ relationship (where the contained object’s lifecycle does not depend on the container object’s lifecycle) termed as? Options: Answer: Aggregation Explanation: In object-oriented analysis and design (OOAD), a weak ‘has-a’ relationship is called “aggregation”. This relationship implies that while the contained object (the ‘part’) can be associated […]
Introduction In multithreaded Java applications, managing the communication between threads is crucial. Two of the fundamental methods that facilitate this are wait() and notify(). This post will explore these methods and how they enable smooth thread synchronization. The Role of wait() and notify() in Synchronization Begin with an explanation of the importance of thread synchronization […]
