【软件工具安装-MacOS】jdk8卸载与安装

1.  jdk卸载

//查看当前jdk版本
huadembp:~ huayu$ java -version
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)
huadembp:~ huayu$ sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
huadembp:~ huayu$ sudo rm -fr /Library/PreferencePanes/JavaControlPanel.prefPane
//删除 Oracle Java 高速缓存
huadembp:~ huayu$ sudo rm -fr ~/Library/Application\ Support/Oracle/Java
//进入jdk文件存放路径
huadembp:bin huayu$ cd /Library/Java/JavaVirtualMachines/
huadembp:JavaVirtualMachines huayu$ ls
jdk1.8.0_151.jdk
//删除jdk
huadembp:JavaVirtualMachines huayu$ sudo rm -rf jdk1.8.0_151.jdk/
//再次查看jdk，已完成删除
huadembp:JavaVirtualMachines huayu$ java -version
No Java runtime present, requesting install.

2. jdk安装

mac下安装jdk较为简单，可以按照提示一步步操作就可以了。

jdk dmg文件下载地址  https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html  通过oracle官网下载jdk非常慢，如果有更好的靠谱途径大家可以给留下言。

接下来，按照安装向导的提示安装就可以了

根据安装向导提示一直到jdk安装成功后验证。

huadembp:~ huayu$ java -version
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)