What is path of JDK on Mac ?

 

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  • Mac OS X 10.6.7 Java Path Current JDK confusing 5 answers

    • The location has changed from Java 6 (provided by Apple) to Java 7 and onwards (provided by Oracle). The best generic way to find this out is to run 

    /usr/libexec/java_home

    This is the natively supported way to find out both the path to the default Java installation as well as all alternative ones present.

    If you check out its help text ( java_home -h ), you'll see that you can use this command to reliably start a Java program on OS X ( java_home --exec ... ), with the ability to explicitly specify the desired Java version and architecture, or even request the user to install it if missing.

    A more pedestrian approach, but one which will help you trace specifically which Java installation the command java resolves into, goes like this:

  • run 

    which java

  • if that gives you something like /usr/bin/java , which is a symbolic link to the real location, run 

    ls -l `which java`

    On my system, this outputs 

    /usr/bin/java -> /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/bin/java

    and therefrom you can read the Java home directory;

  • if usr/bin/java points to another symbolic link, recursively apply the same approach with 

    ls -l <whatever the /usr/bin/java symlink points to>

    • An important variation is the setup you get if you start by installing Apple's Java and later install Oracle's. In that case Step 2 above will give you 

    /usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Commands/java

    and that particular java binary is a stub which will resolve the actual java command to call by consulting the JAVA_HOME environment variable and, if it's not set or doesn't point to a Java home directory, will fall back to calling java_home . It is important to have this in mind when debugging your setup.

    Which Mac version are you using? try these paths 

     /System/Library/Frameworks/JavaVM.framework/ OR
 /usr/libexec/java_home

    This link might help - How To Set $JAVA_HOME Environment Variable On Mac OS X

    Have a look and see if the the JDK is at:

    Library/Java/JavaVirtualMachines/ Or /System/Library/Java/JavaVirtualMachines/

    Check this earlier SO post: JDK on OSX 10.7 Lion

    链接地址: http://www.djcxy.com/p/76618.html

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