1、下载 jdk1.8,我下载的jdk-8u121-Linux-x64.tar.gz,使用FileZilla上传至/home/ftp,在/usr/lib/jvm创建目录
sudo mkdir /usr/lib/jvm
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解压/home/ftp到刚才创建目录/usr/lib/jvm
sudo tar -zxvf jdk-8u121-linux-x64.tar.gz -C /usr/lib/jvm
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2、配置Java环境变量
vi ~/.bashrc
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移至光标到文件末尾,添加以下内容
#set oracle jdk environment
export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_121 ##这里要换成自己解压的jvm目录
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
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使变量生效
source ~/.bashrc
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3、命令端输入java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
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