Cross-platform Java version manager with lightning-fast scanning (300ms) and instant switching (<1s) 跨平台Java版本管理器,支持闪电扫描(300ms)和瞬间切换(<1秒)
Revolutionary symbolic link technology eliminates PATH modifications, delivering instant JDK switching with zero downtime. 革命性的符号链接技术无需修改PATH,实现零停机时间的即时JDK切换。
Universal Java version management across all major operating systems with platform-specific optimizations. 跨所有主流操作系统的通用Java版本管理,具有平台特定的优化。
Advanced filesystem scanning algorithms can scan entire C: drive with 5-level depth in just 300ms. 先进的文件系统扫描算法,可在300毫秒内扫描整个C:盘5层深度。
Watch how JEnv switches between Java versions instantly, compared to traditional manual methods 观看JEnv如何瞬间切换Java版本,与传统手动方法形成鲜明对比
No waiting, no downtime 无等待,无停机时间
Smart path management 智能路径管理
Built for Windows users 专为Windows用户打造
Check version and help information 查看版本和帮助信息
jenv --version jenv --help
Configure system PATH and appearance 配置系统路径和外观
jenv path jenv theme light jenv theme dark
Add, remove and manage JDK versions 添加、删除和管理 JDK 版本
jenv add jdk8 "C:\Program Files\Java\jdk1.8.0_291" jenv remove jdk8 jenv list jenv scan c:\ jenv current
Switch between different JDK versions 在不同的 JDK 版本间切换
jenv use jdk8 jenv use jdk11
C:/ drive depth-5 scanning C:/盘5层深度扫描
Lightning fast version switching 闪电般快速的版本切换
Minimal resource footprint 极低的资源占用
Windows, Linux, macOS Windows、Linux、macOS
Metric 指标 | JEnv | Manual Method 手动方式 | Other Tools 其他工具 |
---|---|---|---|
Scan Speed (C:/ Depth-5) 扫描速度 (C:/深度5) | 300ms | 10-30s | 2-5s |
Version Switch Time 版本切换时间 | < 1s | ~30s | 5-10s |
Cross-Platform Support 跨平台支持 | |||
Memory Usage 内存占用 | < 10MB | N/A | 20-50MB |
Setup Complexity 设置复杂度 | Easy | Complex | Moderate |
Features | JEnv | Others |
---|---|---|
Windows Optimization | ||
Symlink Technology |
JEnv uses symbolic links to manage multiple Java versions efficiently. When you switch versions, JEnv updates the symlink to point to the desired JDK installation. JEnv 使用符号链接高效管理多个 Java 版本。当切换版本时,JEnv 会更新符号链接指向所需的 JDK 安装目录。
No, JEnv works with your existing JDK installations. You can keep all your JDK versions and switch between them seamlessly. 不需要,JEnv 可以与现有的 JDK 安装共存。您可以保留所有 JDK 版本而无缝切换。
JEnv is an open-source project and welcomes contributions from the community. Whether it's bug reports, feature requests, or code contributions, every bit helps! JEnv 是一个开源项目,欢迎社区贡献。无论是报告错误、功能请求还是代码贡献,都能帮助项目变得更好!