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I have 3 different versions (jdk) of Java installed: 6, 7 and 8. In
bash_profile:
export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
setjdk() {
export JAVA_HOME=$(/usr/libexec/java_home -v $1)
}
However, at
$ ls /System/Library/Java/JavaVirtualMachines
1.6.0.jdk
I see only one version. Where are the 2 other ones? What's the location of their jdks?
You can see the install locations of the recognized JDKs by using java_home's "-V" option:
$ /usr/libexec/java_home -V
Matching Java Virtual Machines (4):
1.8.0_31, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home
1.7.0_55, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home
1.6.0_65-b14-466.1, x86_64: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-466.1, i386: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
You see newer JDKs are under /Library/Java/JavaVirtualMachines. I think it was moved out of "System" after Apple stopped developing the OSK JDK themselves and Oracle took over.
Also see /usr/libexec/java_home --help for more options.
In contrary to the Apple provided Java6 which will be installed to /System/Library/Java and /System/Library/Frameworks, Oracle's Java7 and Java8 are located at /Library/Java/ in several subfolders.
