Mac JDK 卸載方法

卸載步驟

輸入 
sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin 
sudo rm -fr /Library/PreferencesPanes/JavaControlPanel.prefpane

查找當前版本 
輸入：ls /Library/Java/JavaVirtualMachines/ 
輸出：jdk-9.0.1.jdk

sudo rm -rf /Library/Java/JavaVirtualMachines/jdk-9.0.1.jdk