从我的Mac中删除所有Java安装（存在多个Java版本）
/System/Library/Frameworks/JavaVM.framework /
任何新的JRE安装都会失败并出现以下异常（来自/var/log/install.log）
Jan 16 13:28:51 MacBook-LT installd[1171]: ./postinstall: Error occurred during initialization of VM
Jan 16 13:28:51 MacBook-LT installd[1171]: ./postinstall: java.lang.NullPointerException
Jan 16 13:28:51 MacBook-LT installd[1171]: ./postinstall: at java.util.Hashtable.put(Hashtable.java:514)
Jan 16 13:28:51 MacBook-LT installd[1171]: ./postinstall: at java.lang.System.initProperties(Native Method)
Jan 16 13:28:51 MacBook-LT installd[1171]: ./postinstall: at java.lang.System.initializeSystemClass(System.java:1119)
如何从此错误中恢复？