Matching Java Virtual Machines (1):
    1.8.0_211, x86_64:    "Java SE 8"    /Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home

/Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home

修改变量

vim .bash_profile

添加

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home
export JAVA_PATH=$JAVA_HOME/bin:$PATH:.
export JAVA_CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.

配置立即生效

source .bash_profile

查看版本

java -version

结果

java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

Mac-JDK安装成功

mkdir -p /usr/local/java
tar -zxvf jdk-8u211-linux-x64.tar.gz -C /usr/local/java/

修改配置

vim /etc/profile

增加环境变量

JAVA_HOME=/usr/local/java/jdk1.8.0_211
JRE_HOME=$JAVA_HOME/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
JAVA_CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH JAVA_CLASSPATH

注意:这里的PATH必须是PATH.不能像Mac一样可以随意定义成别的

配置立即生效

source /etc/profile

验证安装

java -version

java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

Linux-JDK安装成功