JDK在Linux下的配置

1.准备JDK二进制包文件

链接：https://share.weiyun.com/DrpySRwK 密码：vwsf9s

2.解压到指定的目录下

$ sudo tar -xf jdk1.8.0_181.tar.gz -C /usr/java/

3.配置到全局环境变量并应用

$ cat /etc/profile
...
export JAVA_HOME=/usr/java/jdk1.8.0_181
export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH
$ source /etc/profile
$ java -version 
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)