Oct 30, 2017.which tells you which Java version you're currently using and where it's installed. I have Java 9 currently installed and it tells me. Driver printer canon ip2770 for mac.

The Java JDK installed on MacOS has some interesting platform specific utilities, like. /usr/libexec/java_home.which tells you which Java version you’re currently using and where it’s installed. I have Java 9 currently installed and it tells me: /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home If you have multiple versions installed, adding -V will list all the versions and where they’re installed: $ /usr/libexec/java_home -V Matching Java Virtual Machines (2): 9, x86_64: 'Java SE 9' /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home 1.8.0_101, x86_64: 'Java SE 8' /Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home The next logical question from here would be, 'How do I switch versions?' If you set your $PATH in a.profile or similar approach, you can eval java_home to add the current version to your path, but a neat trick discussed in one of the answers (thanks to this SO for this tip) uses the -v option to allow you to switch versions. Add a couple of aliases to your.profile like this. Alias j9='export JAVA_HOME=`/usr/libexec/java_home -v 9`; java -version' alias j8='export JAVA_HOME=`/usr/libexec/java_home -v 1.8`; java -version' alias j7='export JAVA_HOME=`/usr/libexec/java_home -v 1.7`; java -version' and you’ve got a quick shortcut to switching between different versions.