浮力影院第一页在线观看,99国产精品久久99久久久,99精品国产99久久久久久97

Article Tags

All
web3.0
- All
Backend Development
Web Front-end
Database
- All
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
Operation and Maintenance
- All
- Mac OS
- Linux Operation and Maintenance
- Apache
- Nginx
- CentOS
- Docker
Development Tools
- All
- VSCode
- sublime
- notepad
- git
- composer
PHP Framework
- All
- Laravel
- YII
Common Problem
- All
Other
- All
- IIS
- SEO
- Premiere
Tech
- All
- AI
- It Industry
CMS Tutorial
- All
- WordPress
Java
- All
- javaTutorial
System Tutorial
- All
- Windows Series
- LINUX
- MAC
Computer Tutorials
Hardware Tutorial
Mobile Tutorial
- All
- Mobile News
- iPhone
- Android Phone
Software Tutorial
Mobile Game Tutorial

Home

Technical Articles

Java

javaTutorial

In-depth parsing of java -jar command: Avoid wildcard *.jar errors

This article analyzes in detail the common reasons and solutions for error: Unable to access jarfile *.jar error caused by misuse of wildcard character *.jar when using the java -jar command. The core is that java -jar requires an explicit JAR file name, not a wildcard. The article provides correct command syntax, sample code and precautions, aiming to help developers avoid such common errors and ensure the smooth start of Java applications.

Aug 29, 2025 am 08:06 AM

Optimizing multi-list data association and persistence strategies in Spring Boot: Taking employee project allocation as an example

This article explains in detail how to efficiently and accurately associate elements in two parallel lists (such as project lists and corresponding month data) into a new object (EmployeeProject) in Spring Boot applications. By analyzing common loop traps, such as duplicate data or data misalignment problems caused by nested loops, the article provides an iterative solution based on index to ensure the one-to-one correspondence of the data, avoid unnecessary duplicate saving, and improve the accuracy of data processing.

Aug 29, 2025 am 07:09 AM

Tutorial for converting current time to seconds in Java

This article aims to describe how to convert the current time to seconds starting from the day in Java and provides sample code using java.time.LocalTime. We will explore how to get the number of seconds of the current time and provide a way to compare the current time with the target time, while taking into account the impact of the time zone to ensure the accuracy and reliability of the code.

Aug 29, 2025 am 06:48 AM

Analysis and solution of dependency transitive problems in Gradle multi-project construction

In Gradle multi-project construction, when one subproject depends on another subproject, you may encounter dependency transitive problems, resulting in some dependencies of upstream projects being unrecognized in downstream projects. This article will explore the differences between implementation and API configuration in depth, and provide two effective solutions: one is to change the key dependency types of upstream projects from implementation to API to make them transitive; the other is to directly redeclare the required external dependencies in downstream projects to ensure the correctness of compilation and operation.

Aug 29, 2025 am 06:39 AM

Generation and probability calculation of permutation combinations in Java: Taking the 'recruitment assistant' problem as an example

This tutorial explores in detail how to generate all possible permutations in Java, and combines the Recruitment Assistant algorithm to demonstrate how each permutation is processed independently to calculate the probability of a particular event (such as just recruiting twice). The article focuses on correcting common misunderstandings in flattening all arrangements, providing correct iteration and data conversion methods, ensuring the accuracy of algorithm logic, and is suitable for scenarios where statistical analysis of a large number of arrangements is required.

Aug 29, 2025 am 06:21 AM

How to keep Java Applet running today

This article describes how to run Java Applets in modern browsers and Java environments. Due to security issues, mainstream browsers and Java no longer support Applets. This article will introduce a solution to run Applets using the Applet Runner tool, helping developers continue to use Applet technology in specific scenarios.

Aug 29, 2025 am 05:57 AM

Finding parent nodes in a general tree: Implementation Guide based on breadth-first traversal

This tutorial details how to find the parent node of a specified node in a general tree data structure. We will use the Broadness-first traversal (BFS) algorithm to systematically explore the nodes of the tree layer by layer, and efficiently locate the parent of the target node. The article will cover node structure definition, BFS algorithm principles, Java code implementation, time and space complexity analysis, and related precautions to help readers master this core tree operation skills.

Aug 29, 2025 am 05:45 AM

Detailed explanation of Spring Batch application monitoring solution

This article aims to introduce the monitoring solutions for Spring Batch applications, and focuses on how to use Micrometer to integrate Prometheus and Grafana to achieve comprehensive performance metric monitoring. The content covers Spring Batch monitoring standard methods, Micrometer integration methods, and related documents and examples to help developers quickly build an efficient monitoring system, so as to promptly discover and resolve performance bottlenecks.

Aug 29, 2025 am 05:21 AM

How to use a do-while loop in Java

Ado-whileloopinJavaexecutestheloopbodyatleastoncebeforecheckingthecondition.1.Thecodeinsidethedoblockrunsfirst.2.Then,thewhileconditionisevaluated.3.Iftheconditionistrue,thelooprepeats;iffalse,itends.4.Theloopisusefulforscenarioslikemenu-drivenprogra

Aug 29, 2025 am 05:21 AM

Build flexible parameter types: Use Builder mode to implement functional programming

This article describes how to use the Builder pattern to build a function that accepts a Function or Float/Double as a parameter for streaming. Builder mode allows you to avoid code redundancy caused by method overloading and provide an elegant way to handle dynamically typed inputs, thus simplifying parameter configuration in creative coding applications.

Aug 29, 2025 am 05:18 AM

Unit tests for WebClient exception handling using Mono.error

This article describes how to write effective unit tests when using the doOnError method of WebClient for exception handling. The focus is to use Mono.error to simulate exceptions thrown by WebClient, thereby triggering logic in doOnError to ensure the correctness of exception handling.

Aug 29, 2025 am 04:30 AM

How to debug a Java application in Eclipse

Setbreakpointsbyclickingtheleftmarginnexttolinenumberstopauseexecutionatdesiredpoints.2.StartdebuggingbyselectingDebugAs>JavaApplicationorusingthedebugshortcut,whichlaunchestheDebugPerspective.3.UsetheDebugPerspective’sVariables,Breakpoints,CallSt

Aug 29, 2025 am 04:25 AM

What is the difference between HashMap and Hashtable in Java?

HashMapisnotsynchronizedandrequiresexternalsynchronizationforthreadsafety,whileHashtableissynchronizedandthread-safe.2.HashMapallowsonenullkeyandmultiplenullvalues,whereasHashtabledoesnotallownullkeysorvaluesandthrowsNullPointerException.3.Hashtablei

Aug 29, 2025 am 04:17 AM

Java Applet compatibility solutions and practices in modern environments

Java Applet has been eliminated by modern browsers and Java platforms due to its security and technological evolution. This article will dive into how to use the third-party tool Applet Runner to reactivate and run legacy Java Applets in mainstream IDEs or as standalone applications, providing a viable technical path to dealing with legacy systems.

Aug 29, 2025 am 02:57 AM