Use online download jdk or use tools to upload to the server
unzip files
tar xzvf /srv/ftp/jdk-8u73-linux-x64.tar.gz -C /usr/local/
rename
mv /usr/local/jdk1.8.0_73/ /usr/local/jdk
Modify the environment variable vim /etc/profile
export JAVA_HOME=/usr/local/jdk
export PATH=$PATH:$JAVA_HOME/bin:
Restart the server or refresh to take effect immediately source /etc/profile
remove jdk rm /srv/ftp/jdk-8u73-linux-x64.tar.gz
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To install tomcat, jdk must be installed and JAVA_HOME configured
unzip tomcat
tar xzvf /srv/ftp/apache-tomcat-9.0.0.M19.tar.gz -C /usr/local/
rename tomcat
mv /usr/local/apache-tomcat-9.0.0.M19/ /usr/local/tomcat
Modify the configuration file
vim /usr/local/tomcat/bin/startup.sh
JAVA_HOME=/usr/local/jdk
tomcat start: /usr/local/tomcat/bin/catalina.sh start
tomcat shutdown: /usr/local/tomcat/bin/catalina.sh stop