bash Java：找不到命令
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Java: command not found
提问by rsp
I have installed jdk on my mac, ran /usr/libexec/java_homeand found the path to java to be this: /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
我已经在我的 mac 上安装了 jdk，运行/usr/libexec/java_home并发现 java 的路径是这样的：/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
I added this line to my ~/.bashrcfile:
我将此行添加到我的~/.bashrc文件中：
export PATH=$PATH:/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
I still get this error message:
我仍然收到此错误消息：
java: command not found
java：找不到命令
Can anyone help? I have been trying Stack Overflow solutions for hours now.
任何人都可以帮忙吗？我已经尝试了几个小时的 Stack Overflow 解决方案。
Thanks!
谢谢！
回答by Arnav Borborah
You have set your PATHto the wrong variable. Javais inside a binfolder, which you have to append to your current path. The correct command would be:
您已将您PATH的变量设置为错误。Java位于bin文件夹内，您必须将其附加到当前路径。正确的命令是：
export PATH=$PATH:/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home/bin
回答by Elliott Frisch
While it is sufficient to add the "bin" folder to your PATH, doing so will leave you unable to run several desirable Java standard tools (like maven, ant, sbt, scala and groovy). Instead, first set a JAVA_HOMEand then add that with "bin" to your PATH. Like,
虽然将“bin”文件夹添加到您的 PATH 中就足够了，但这样做会使您无法运行几个理想的 Java 标准工具（如 maven、ant、sbt、scala 和 groovy）。相反，首先设置 a JAVA_HOME，然后将其与“bin”一起添加到您的 PATH 中。喜欢，
export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home"
export PATH="$PATH:$JAVA_HOME/bin"
