centos7配置java

通過https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html下載jdk,我這裏下載的是jdk-8u251-linux-x64.tar.gz

mkdir /usr/local/java

cd /usr/local/java

上傳jdk-8u251-linux-x64.tar.gz到當前目錄

tar -zxvf jdk-8u251-linux-x64.tar.gz

vi /etc/profile

在結尾添加

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

保存,執行

source /etc/profile

使配置生效