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Showing posts from March, 2025

LEETCODE PRACTICE

  UNDERSTANDING HAPPY NUMBERS   Introduction                       This presentation explores the concept of Happy Numbers, their properties, algorithms for determining their status, and practical applications in various fields.   What is a happy number ?                       a happy number is a number that eventually reaches 1 when replaced repeatedly by the sum of the squares of its digits. An unhappy number (also known as a sad number ) is a number that does not reach 1 and instead enters a cycle that never reaches 1.   Steps to determine if a number is happy:            1.Start with a number n .          2 . Replace n by the sum of the squares of its digits.           3. Repeat the process with the new value.    ...

Work with Eclipse

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DESCRIPTION : This is a basic Spring Boot application that provides a web-based calculator for performing addition of two numbers. The program is designed to accept two numbers as input, perform the addition operation, and display the result. Step 1: Install Eclipse and Set Up Java Download Eclipse IDE : If you don't have Eclipse installed, download it from the Eclipse Downloads Page . Select Eclipse IDE for Java Developers and install it. Install Java Development Kit (JDK) : You’ll need to have Java installed on your machine. Download JDK from Oracle's Website or AdoptOpenJDK . Set the JAVA_HOME environment variable and update the PATH . Step 2: Set Up Spring Boot Project in Eclipse Install Spring Tool Suite (STS) Plugin for Eclipse : To make it easier to develop Spring Boot applications, you can install Spring Tool Suite (STS) , a set of plugins for Eclipse that simplifies Spring development. To install the STS plugin: Open Eclipse. Go to Help > ...

Java - SpringBoot

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  JAVA - SPRINGBOOT 1. What is Java? Java is a high-level, object-oriented programming language that is designed to be platform-independent. It follows the principle of "Write Once, Run Anywhere," which means that Java programs can run on any device or operating system that has a Java Virtual Machine (JVM). Key Features of Java : Object-Oriented : Java supports the object-oriented paradigm, meaning you can create objects that represent real-world entities. Platform Independence : Java code is compiled into bytecode, which can be run on any system that has a JVM. Multi-threading : Java supports multi-threading, which allows multiple tasks to run concurrently. 2. What is Spring Boot? Spring Boot is a framework that is built on top of the Spring Framework , which is one of the most popular frameworks for developing Java-based applications. Spring Boot simplifies the development of Java applications by making it easier to set up and run applications with minimal configurat...