Capsule uses wrong jvm about capsule

[pron]

Which is the JVM used to launch the capsule (when you type java)? Is it perhaps C:\Program Files (x86)\Java\jre7?

[draenor]

Incidentally, yes

$ java -version
java version "1.7.0_15"
Java(TM) SE Runtime Environment (build 1.7.0_15-b03)
Java HotSpot(TM) Client VM (build 23.7-b01, mixed mode, sharing)

Although setting the correct JAVA_HOME would solve issue the I was under the impression that the JDK-Required property would override that.

[pron]

Well, it should work even if you set your JAVA_HOME to C:\Program Files\Java\jre7.

The thing is that Capsule's Java installation detection is limited. It can't search the whole filesystem, or it would take too long. Instead, it uses a heuristic: it already knows of one Java installation -- the one used to launch the capsule itself -- so it looks for other installations in the same directory. On your machine, you have Java installations in two different directories: C:\Program Files (x86)\Java\ and C:\Program Files\Java\. If you launch the capsule using an installation in one directory, it won't find installations in the other.

Perhaps it's worth adding a special case for Windows's C:\Program Files (x86)\/C:\Program Files\

[draenor]

I think that would be a great idea and should resolve probably the most common reason for this problem. Also it's still a bit odd that -Dcapsule.jvms didn't even print the JVM it was run with. Thanks for the quick response :)

[pron]

Yes, that is strange. I will look into that. Can you confirm that Capsule behaves properly (i.e. respects JDK-Required) when JAVA_HOME is C:\Program Files\Java\jre7?

[draenor]

So two things going on here. The java binary run was apparently run from c:/windows/system32, no wonder no java installation was detected ..

Secondly

$ c:/Program\ Files/Java/jre7/bin/java -Dcapsule.jvms -jar foo.jar
CAPSULE: Detected Java installations:
1.7.0_45        c:\Program Files\Java\jdk1.7.0_45\jre
1.7.0_09        c:\Program Files\Java\jdk1.7.0_09\jre
CAPSULE: selected null

Starting the application with the above command, with the JDK-Required flag, doesn't seem to work either. The following two variants however does

$ java -jar -Dcapsule.java.home="c:/Program\ Files/Java/jdk1.7.0_45/" -jar foo.jar
$ "c:/Program Files/Java/jdk1.7.0_45/bin/java" -jar foo.jar

For reference, JAVA_HOME set to c:/Program Files/Java/jdk1.7.0_45/.