java - 从 Java 应用程序安装程序中查找 Mac OS X 上所有可用的 JRE

Question

如果 Java 应用程序需要特定的 JRE 版本，那么我如何在安装过程中检查它在 Mac OS X 上的可用性？

Answer 1

它应该像查看/System/Library/Frameworks/JavaVM.framework/Versions/一样简单

例如从我的机器:

manoa:~ stu$ ll /System/Library/Frameworks/JavaVM.framework/Versions/
total 56
774077 lrwxr-xr-x  1 root  wheel    5 Jul 23 15:31 1.3 -> 1.3.1
167151 drwxr-xr-x  3 root  wheel  102 Jan 14  2008 1.3.1
167793 lrwxr-xr-x  1 root  wheel    5 Feb 21  2008 1.4 -> 1.4.2
774079 lrwxr-xr-x  1 root  wheel    3 Jul 23 15:31 1.4.1 -> 1.4
166913 drwxr-xr-x  8 root  wheel  272 Feb 21  2008 1.4.2
168494 lrwxr-xr-x  1 root  wheel    5 Feb 21  2008 1.5 -> 1.5.0
166930 drwxr-xr-x  8 root  wheel  272 Feb 21  2008 1.5.0
774585 lrwxr-xr-x  1 root  wheel    5 Jul 23 15:31 1.6 -> 1.6.0
747415 drwxr-xr-x  8 root  wheel  272 Jul 23 10:24 1.6.0
167155 drwxr-xr-x  8 root  wheel  272 Jul 23 15:31 A
776765 lrwxr-xr-x  1 root  wheel    1 Jul 23 15:31 Current -> A
774125 lrwxr-xr-x  1 root  wheel    3 Jul 23 15:31 CurrentJDK -> 1.5
manoa:~ stu$