Ubuntu16 install jdk and tomcat

1. sudo mkdir /home/software/java to create the jdk installation directory
2. Put the jdk file under /home/software/java, and then decompress it sudo tar -zxvf jdk-8u121-linux-x64.tar.gz
3.sudo vim /etc/profile Set environment variables (if the vim editor is not installed, install it online with sudo apt-get install vim)
4. sudo /etc/profile Add
export JAVA_HOME=/home/Java/jdk1.8.0_121 to the profile file
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
5. After saving, execute source / etc / profile
to make

the variable take effect -8.0.43/bin, modify startup.sh and shutdown.sh files


3.在startup.sh和shutdown.sh文件中添加JAVA_HOME=/home/softe/java/jdk1.8.0_121
JRE_HOME=$JAVA_HOME/jrePATH=$PATH:$JAVA_HOME/bin:$JRE_HOME
CLASSPATH=.:$JRE_HOME/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
TOMCAT_HOME=/opt/apache-tomcat-8.0.43