Linux download installation configuration jdk11

1. Linux download and install jdk11

1. Download and unzip the installation

1. Go to oracle official website to download jdk. Passed to the Linux server through ftp.
   https://www.oracle.com/technetwork/java/javase/downloads/index.html
   

2. Create address directory / usr / local / jdk

3. Unzip

tar -xvf /other/jdk/文件名  -C 、usr/local/jdk

2. Configure the environment

1. Configuration

vi /etc/profile

Add the following in the last line:

JAVA_HOME=/usr/local/jdk/jdk-11.0.5
JRE_HOME=$JAVA_HOME/
CLASSPATH=$JAVA_HOME/lib/

PATH=$PATH:$JAVA_HOME/bin

export PATH JAVA_HOME CLASSPATH

Note:
There is no jre folder in the unzipped directory. When you start Tomcat, you will find the jre directory.

2. Make the configuration effective

source /etc/profile

1. Check if the configuration is successful

java -version

2.linux download and install tomcat

1. Download
   http://mirrors.hust.edu.cn/apache/tomcat/tomcat-9/v9.0.29/bin/ and
   upload it to the / other / tomcat file of Linux through ftp.

2. Unzip

tar -xvf /other/tomcat/文件名 [-C 目标地址]

1. Open port 8080

firewall-cmd --zone=public --add-port=8080/tcp --permanent    永久开启8080端口  
firewall-cmd --reload   重新载入  

2. Start, stop tomcat
   into the bin directory, ./starup.sh to open tomcat, ./shutdown.sh to close tomcat
   

3. Set boot from boot