If Java application requires certain JRE version - how can I check its availability on Mac OS X during installation?
+1
A:
It should be as simple as looking at /System/Library/Frameworks/JavaVM.framework/Versions/
E.g. from my machine:
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$
Stu Thompson
2008-09-15 14:10:24
A:
This artical may help:
http://developer.apple.com/technotes/tn2002/tn2110.html
Summery:
String javaVersion = System.getProperty("java.version");
if (javaVersion.startsWith("1.4")) {
// New features for 1.4
}
Unkwntech
2008-09-15 14:11:14
I want to check before running any Java code, probably using shell script.
Igor Romanov
2008-09-15 15:47:00