下载jdk8
wget https://download.oracle.com/otn-pub/java/jdk/8u191-b12/2787e4a523244c269598db4e85c51e0c/jdk-8u191-linux-x64.tar.gz?AuthParam=1545702611_985353507b7b4664bfce283ab5218681tar zxvf jdk-8u191-linux-x64.tar.gz cd jdk1.8.0_191/
vim /etc/profile在结尾加入:
export JAVA_HOME=/usr/javaexport CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport PATH=$PATH:$JAVA_HOME/bin source /etc/profile
完成,运行正常:java -version