root下面安裝全局的JDK
以debian為例
debian下載jdk：https://download.oracle.com/otn-pub/java/jdk/13.0.2+8/d4173c853231432d94f001e99d882ca7/jdk-13.0.2_linux-x64_bin.deb
其他系統(tǒng)：https://www.oracle.com/java/technologies/javase-jdk13-downloads.html
解壓：下載完成后，在下載目錄打開終端，直接運(yùn)行命令sudo dpkg -i jdk-13.0.2_linux-x64_bin.deb進(jìn)行安裝（具體名稱看你下載的安裝包）
whereis jvm
cd /usr/lib/jvm
sudo vim /etc/profile
添加環(huán)境變量，其中JAVA_HOME為jvm的位置
export JAVA_HOME=/usr/lib/jvm/jdk-13.0.2
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
對(duì)于這些配置的解釋：https://www.cnblogs.com/samcn/archive/2011/03/16/1986248.html
source /etc/profile
檢查java是否安裝好
java -version
個(gè)人用戶安裝JDK
下載安裝與root相同：
vim ~/.bashrc
配置環(huán)境變量
export JAVA_HOME="/usr/lib/jvm/jdk-13.0.2"
export JRE_HOME=${JAVA_HOME}/jre
export PATH=${JAVA_HOME}/bin:$PATH
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export LD_LIBRARY_PATH=/usr/lib/jvm/jdk13.0.2/lib/server:$LD_LIBRARY_PATH
source ~/.bashrc
java -version
如果因?yàn)橹匮bJava導(dǎo)致rJava package 安裝問題，可以參考https://www.itranslater.com/qa/details/2325759177198666752
用conda安裝java 8環(huán)境
conda create -n java8
conda activate java8
conda install openjdk=8.0.152
##查看java版本
java -version
檢查javac的反應(yīng)
javac
可參考：https://blog.csdn.net/xiaochuige/article/details/47421691
conda 安裝rjava
conda install -c r r-rjava
歡迎關(guān)注！
參考：
https://blog.csdn.net/Douz_lungfish/article/details/103232715
https://linux265.com/news/3369.html#list0
https://blog.csdn.net/qq_33432559/article/details/77222502
https://stackoom.com/question/30D0j/%E6%9C%80%E8%BF%91%E6%9B%B4%E6%96%B0%E7%9A%84R-RStudio-%E6%97%A0%E6%B3%95%E5%8A%A0%E8%BD%BDrJava
http://m.itdecent.cn/p/c5cf7cf9649e
