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ssential RxJava Operators for Efficient Asynchronous Programming

As a prolific author, I encourage you to explore my books on Amazon. Remember to follow my work on Medium for continued support. Thank you for your readership! Your engagement is invaluable. RxJava has transformed asynchronous data stream managemen

Jan 29, 2025 pm 08:08 PM

spring-: spring-boot-application-bean-lifecycle-comprehensive-execution-order-with-related-methods

This document details the comprehensive execution order of the Spring Boot application bean lifecycle, encompassing related methods at each stage. Phase 1: Bootstrapping (JVM & Spring Boot Initialization) JVM Initialization: The Java Virtual Mac

Jan 29, 2025 pm 08:06 PM

Facts About Marker Interfaces in Java

Label interface in Java Detailed explanation: lightweight metadata mechanism The mark interface in Java is an interface that does not include any method or field. It is used to add specific metadata to the class so that the Java or other frameworks can be identified and processed. Although it looks insignificant because it does not define any behavior, its importance is how it tells how JVM or an external library handles the tag classes in different ways. Some commonly used tag interfaces in Java include Serializable, Cloneable and Remote. 1.1 Example of the mark interface Let's take a look at an example of a typical mark interface in Java: // Tag interface example public inte

Jan 29, 2025 pm 08:05 PM

spring-: spring-bean-lifecycle-execution-order

This article comprehensively analyzes the life cycle of Spring Bean, covering all related life cycle interfaces and methods covering the BeanFactory interface, and fully presents the operating process of Bean. 1. Spring Bean Life cycle logic execution order (from instantiation to destruction) (Exammented to destruction) Load bean definition (metadata processing) Spring reads bean definition from the configuration file (@Configuration), XML file or component scan (@Component). This is the step -processing step, and no example has been created. Related method: BeandefinitionRegistry#registerbe

Jan 29, 2025 pm 06:08 PM

spring-: configuration-with-two-out-of-the-box-solutions

Two solutions of Spring Boot configuration Spring Boot recognizes that different projects have different configuration requirements, so two methods are provided: Manual configuration (@SpringBootConfiguration) -For items that need to be refined. Automatic configuration (@EnableAutoConfiguration) -The items that benefit from agreed that they are better than configuration (that is, less manual settings). Choose depends on the specific needs of the project. When will it be used? Use scene method reason Need to completely control bean and configuration @SpringBootConfigurati

Jan 29, 2025 pm 04:15 PM

control flow statemet:

package controlflowmethod; what is while? In Java, the while loop is used to execute a block of code repeatedly as long as a given condition is true. public class While { public static void main(String[] args) { task 1 the i value is 0, the c

Jan 29, 2025 pm 04:14 PM

spring-: spring-boot-bootstrapping-behind-the-scenes

There are many steps hidden behind the Spring Boot application. This article will gradually analyze its logical execution order. 1. Spring Boot application startup step 1.1 JVM startup and main class load The Java virtual machine (JVM) starts and loads the main class containing the Public Static Void Main (String [] ARGS) method. 1.2 Execute SpringApplication.run () method Execute the SpringApplication.run () method, and start the Spring Boot application. This is the entrance point for all Spring Boot applications. 1.3 initialization

Jan 29, 2025 pm 04:13 PM

spring-: classloader-in-java-vs-spring

The concept of class loader in Java The class loader in Java is part of the environment of the Java runtime, and is responsible for loading the class to the Java virtual machine (JVM). The Java application uses a class loader to load class files on demand, rather than loading all classes during startup. Main features: Dynamic loading: Class is loaded on demand when reference. Entrust model: Following the father's commissioned model, the requests of loading class are passed to the parent class before trying the local loading. Class isolation: It helps to maintain class isolation, which is particularly useful in complex systems such as application servers. Type of class loader: Guidance class loader: Load the core Java class from Java.lang, Java.util and other. JV

Jan 29, 2025 pm 04:12 PM

spring-: how-spring-boot-determines-application-context

Spring Boot automatically determines the implementation of Application Context Call SpringApplication.Run (MySpringBootapp.class, ARGS); then, Spring Boot will automatically determine the correct ApplicationContext implementation according to the following factors: Class path (dependencies in the project) Running application type (web or non -web) Determine process SpringApplication uses the following logic to select the right ApplicationContext: like

Jan 29, 2025 pm 04:08 PM

Day16

Conditional Statements in Programming Conditional statements, such as Java's if-else construct, govern program execution based on specified conditions. The fundamental structure involves a condition followed by code blocks for both true and false ou

Jan 29, 2025 pm 04:05 PM

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Jan 29, 2025 am 12:19 AM

Java if-else Statement

Java conditional sentence detailed explanation: IF, ELSE, ELSE IF and nested IF statements This article will explore the conditional statements in Java, including if, else, else if, and nested IF statements, and explain how to use them to control the program. We will help you understand the working principles of these sentences and their application in actual programming through clear grammar examples and code examples. Java uses the following conditional statements to execute different code blocks according to different conditions: If statement: When the specified condition is true, execute the code block. Else statement: When the conditions in if statement are fake, execute the code block. else

Jan 28, 2025 pm 10:15 PM

spring-: setBeanName()-of-BeanNameAware-BeanFactory

This detailed walkthrough illustrates the BeanNameAware interface's setBeanName() method within a simple Java Spring application. Let's explore the execution flow step-by-step. 1. Program Execution Begins (main()) The program starts in the main() me

Jan 28, 2025 pm 10:13 PM

spring-: logical-execution-order-and-code-flow

This diagram illustrates the step-by-step execution flow and bean lifecycle within a Spring application. Let's break down the process: Phase 1: Application Context Initialization The application starts by creating a Spring AnnotationConfigApplication

Jan 28, 2025 pm 10:12 PM