centOS7安装Java环境

wget https://download.oracle.com/otn/java/jdk/8u251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/jdk-8u251-linux-x64.tar.gz?AuthParam=1590135363_2f6dbe12605da3b1164a50e7c1a8db7b

ls -lht

mkdir /usr/local/java/

tar -zxvf jdk-8u251-linux-x64.tar.gz?AuthParam=1590135363_2f6dbe12605da3b1164a50e7c1a8db7b -C /usr/local/java

export JAVA_HOME=/usr/local/java/jdk1.8.0_251
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

source /etc/profile

ln -s /usr/local/java/jdk1.8.0_251/bin/java /usr/bin/java

java -version