我正试图在我的Ubuntu12.04上安装JAVA,我遵循了官方指令:http://java.com/en/download/help/linux_x64_install.xml#install
我被困在#3:Unpack the tarball and install Java。我成功地运行了tar zxvf jre-7u7-linux-x64.tar.gz (它只是解包),但是安装它的命令是什么呢?
我已经在我的linux Ubuntu中安装了Java8(更新121),但我需要为我需要使用的特定软件安装Java7RE。我只想让java7和这个工具一起使用,我不想对我默认的java8做任何修改,该怎么做呢?我可以为我的8安装java7而没有问题吗?
update-alternatives --config java
There is only one alternative in link group java (providing /usr/bin/java): /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
Nothing to
我已经在Debian Wheezhy上安装了R。我想安装rjava包,但是我得到了这个错误:
configure: error: Cannot compile a simple JNI program. See config.log for details.
Make sure you have Java Development Kit installed and correctly registered in R.
If in doubt, re-run "R CMD javareconf" as root.
ERROR: configuration failed for