删除对应版本的JDK
# sudo rm -rf /Library/Java/JavaVirtualMachines/jdk<version>.jdk
删除在系统设置中的控件(java按钮)
# sudo rm -rf /Library/PreferencePanes/JavaControlPanel.prefPane
删除插件
# sudo rm -rf /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin