为何需在Windows下安装Java桌面应用（如IntelliJ）？独立JAR存疑

Great question—here are some quick, practical reasons why installation makes sense in many scenarios:

• System Integration: Installers hook the app into your OS's ecosystem: they add start menu shortcuts, desktop icons, and file type associations (like opening .java files directly with IntelliJ). No more hunting for the JAR file every time you want to launch it.
• Dependency & Environment Handling: Many Java apps need more than just a JRE—think specific JDK versions, system libraries, or configuration setups. Installers automate this (e.g., IntelliJ can auto-install or link to a compatible JDK) and store configs in OS-standard locations (like Windows' AppData), so you don't have to manually juggle paths.
• Automatic Updates: Installed apps usually include built-in update mechanisms that detect and roll out new versions seamlessly. No need to manually download a fresh JAR and replace the old one.
• System-Level Functionality: Features like integrating with OS tools (Git, terminal), debugging local services, or accessing system resources often require proper installation to get permissions or correct tool linking. A standalone JAR might hit roadblocks here.
• Clean Multi-Version Management: If you need multiple variants (e.g., IntelliJ Community vs. Ultimate), installers keep their files and configurations isolated, avoiding conflicts that come with manually managing separate JARs.

内容的提问来源于stack exchange，提问作者Denis