Determining the version of Java SDK on the Mac

Question

I have a MacBook Pro running Snow Leopard; how can I see what version of the Java SDK is installed on my Mac?

Answer 1

On modern macOS, the correct path is /Library/Java/JavaVirtualMachines.

You can also avail yourself of the command /usr/libexec/java_home, which will scan that directory for you and return a list.

Answer 2

In /System/Library/Frameworks/JavaVM.framework/Versions you'll see all the installed JDKs. There is a symbolic link named CurrentJDK pointing the active JDK.

Answer 3

Open a terminal and type: java -version, or javac -version.

If you have all the latest updates for Snow Leopard, you should be running JDK 1.6.0_20 at this moment (the same as Oracle's current JDK version).

Answer 4

Run this command in your terminal:

$ java -version

java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
Cristians-MacBook-Air:~ fa$ 

Answer 5

The simplest solution would be open terminal

$ java -version

it shows the following

java version "1.6.0_65"

2. Stefan's solution also works for me. Here's the exact input:

$ cd /System/Library/Frameworks/JavaVM.framework/Versions

$ ls -l

Below is the last line of output:

lrwxr-xr-x   1 root  wheel   59 Feb 12 14:57 CurrentJDK -> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents

1.6.0.jdk would be the answer

Answer 6

Which SDKs? If you mean the SDK for Cocoa development, you can check in /Developer/SDKs/ to see which ones you have installed.

If you're looking for the Java SDK version, then open up /Applications/Utilities/Java Preferences. The versions of Java that you have installed are listed there.

On Mac OS X 10.6, though, the only Java version is 1.6.