和普通文件一样下载就好,安装成功后输入java -version 查看版本号

sugooddeiMac:~ sugood$  java -version
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
sugooddeiMac:~ sugood$ 

查看jdk安装路径

终端中输入指令查看安装路径 /usr/libexec/java_home -V

sugooddeiMac:Cellar sugood$ /usr/libexec/java_home -V
Matching Java Virtual Machines (1):
    1.8.0_261, x86_64:	"Java SE 8"	/Library/Java/JavaVirtualMachines/jdk1.8.0_261.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/jdk1.8.0_261.jdk/Contents/Home
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