官网下载安装包：https://www.oracle.com/java/technologies/downloads/#jdk18-linux
1.登入服务器下载wget https://download.oracle.com/java/18/latest/jdk-18_linux-x64_bin.tar.gz2. 创建目录并解压到此目录
mkdir /usr/local/java tar zxvf jdk-18_linux-x64_bin.tar.gz -C /usr/local/java/3. 添加环境变量 vim /etc/profile 注意文件夹名字
vim /etc/profile
export JAVA_HOME=/usr/local/java/jdk-18.0.1.1
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
source /etc/profile
4. 查看版本
java -version
5.启动jar包命令
java -jar cps-standalone.jar nohup java -jar cps-standalone.jar &
