Linux下安装Java

https://www.oracle.com/java/technologies/javase-jdk16-downloads.html

wget https://download.oracle.com/otn-pub/java/jdk/16.0.2%2B7/d4a915d82b4c4fbb9bde534da945d746/jdk-16.0.2_linux-x64_bin.tar.gz

mkdir /usr/java

tar -zxvf  jdk-16.0.2_linux-x64_bin.tar.gz

vim /etc/profile

 JAVA_HOME=/usr/java/jdk-16.0.2
 PATH=$JAVA_HOME/bin:$PATH
 CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
 export JAVA_HOME
 export PATH
 export CLASSPATH

source /ect/profile

java --version

java 16.0.2 2021-07-20
Java(TM) SE Runtime Environment (build 16.0.2+7-67)
Java HotSpot(TM) 64-Bit Server VM (build 16.0.2+7-67, mixed mode, sharing)