ubuntu配置jdk
1.上传至主机/root目录下
rz -b jdk-8u281-linux-x64.tar.gz
2. 解压
tar -xzvf jdk-8u281-linux-x64.tar.gz
3.配置环境变量
vi /etc/profile
export JAVA_HOME=/root/jdk1.8.0_281
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile
4.检查
java -version
java version "1.8.0_281"
Java(TM) SE Runtime Environment (build 1.8.0_281-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)