Centos7安装JDK8以及环境配置

下载，选择centos7 64位版本

https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

解压

tar -zxvf jdk-8u202-linux-x64.tar.gz

移动目录

sudo mkdir /usr/local/java
sudo mv ~/jdk1.8.0_202 /usr/local/java/

环境配置

vi /etc/profile

写入如下内容

export JAVA_HOME=/usr/local/java/jdk1.8.0_202
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

使之生效

source /etc/profile

 验证

[root@localhost java]# java -version
java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)

到此，配置完成！