java 安装 oracle-java8-set-default 后未设置 webupd8 JAVA_HOME
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webupd8 JAVA_HOME not set after installing oracle-java8-set-default
提问by resilva87
I'm following this linkto install Oracle Java 8.
我正在按照此链接安装 Oracle Java 8。
Maybe I got this wrong, but I suppose JAVA_HOME should be set after installing oracle-java8-set-default.
也许我弄错了，但我想 JAVA_HOME 应该在安装oracle-java8-set-default.
If I echo $JAVA_HOMEor printenv | grep -i javanothing comes up. I'm using Linux Mint 17.1 (Rebecca)
如果我echo $JAVA_HOME或printenv | grep -i java什么都没有出现。我正在使用 Linux Mint 17.1 (Rebecca)
Thanks!
谢谢！
回答by Elliott Frisch
Your JAVA_HOME will not be set by the webupd8 method, and you don't normally need it (because the update-java-alternativesscript manages the environment). If you're looking for the folder it's under "/usr/lib/jvm" and you can certainly do
您的 JAVA_HOME 不会被 webupd8 方法设置，您通常不需要它（因为update-java-alternatives脚本管理环境）。如果您正在寻找位于“/usr/lib/jvm”下的文件夹，您当然可以这样做
export JAVA_HOME=/usr/lib/jvm/java-8-oracle
and you can also test which Java is active with
并且您还可以测试哪个 Java 处于活动状态
java -version
or
或者
java -fullversion
回答by garfield
You need to run also the command:
您还需要运行以下命令：
sudo apt-get install oracle-java8-set-default
as described in WebUpd8 site, then you need to logout and login back again, since the specific command creates two files under /etc/profile.d, named jdk.sh and jdk.csh which populate the environment with JAVA_HOME etc.
如WebUpd8 站点中所述，那么您需要注销并重新登录，因为特定命令在 /etc/profile.d 下创建了两个文件，名为 jdk.sh 和 jdk.csh，它们使用 JAVA_HOME 等填充环境。
