After upgrading to Java8, javac still shows 1.7

Question

I'm having issues upgrading from JDK 1.7 -> 1.8 on OSX. The upgrade has completed, but javac still returns 1.7 as the version.

I've downloaded JDK 8_u5 from Oracle's homepage, and run the installer.

I've also taken the following steps, post-install:

> export JAVA_HOME=`/usr/libexec/java_home -v 1.8`  (Executed in my .bashrc file)  > echo $JAVA_HOME /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home  > javac -version javac 1.7.0_21  > $JAVA_HOME/bin/javac -version javac 1.7.0_21  > $JAVA_HOME/bin/java -version     java version "1.8.0_05" Java(TM) SE Runtime Environment (build 1.8.0_05-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode) 

I've gone through and removed Java 1.7 (and all other JDK versions), and then re-run the installer:

> ls /Library/Java/JavaVirtualMachines jdk1.8.0_05.jdk 

Still no use, javac reports the version as 1.7.0_21

> which javac /usr/bin/javac  > ls -ltra /usr/bin/javac  [snipped] /usr/bin/javac -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/javac 

Within that path, Current is a symlink to A. The contents of A/Commands are a series of files (not symlinks).

> cd A/Commands > ./javac -version javac 1.7.0_21  > ./java -version java version "1.8.0_05" Java(TM) SE Runtime Environment (build 1.8.0_05-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode) 

Edit

Further to the original post, I've done some digging with jenv, as suggested on this answer.

> jenv add /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home                  > jenv global oracle64-1.8.0.05 > jenv version oracle64-1.8.0.05 (set by /Users/martypitt/.jenv/version)  > jenv info java  Jenv will exec : /Users/martypitt/.jenv/versions/oracle64-1.8.0.05/bin/java  > jenv info javac Jenv will exec : /Users/martypitt/.jenv/versions/oracle64-1.8.0.05/bin/javac  > javac -version javac 1.7.0_21 

This casts dispersions on my thoughts that this was a random javac lurking in my path, which was somehow getting invoked.

To be sure, I've nuked my Java completely, and tried again:

> cd /Library/Java/JavaVirtualMachines > ls  jdk1.7.0_55.jdk  jdk1.8.0_05.jdk > sudo rm -rf *   > ls <<empty>> > java -version java version "1.6.0_65" > javac -version javac 1.6.0_65 > which javac /usr/bin/javac 

I then re-downloaded a fresh copy the installer and ran it.

> java -version java version "1.8.0_05" > javac -version javac 1.7.0_21 

Update

I tried removing all JDK's, XCode and all developer tools, and re-installed fresh. Same results.

However, I'm still at a loss -- where do I go from here? How do I get javac 1.8 to get installed?

Answer 1

If /usr/libexec/java_home -v 1.8.0_05 --exec javac -version returns the correct version, then your problem is with:

/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK 

With a privileged user execute:

cd /System/Library/Frameworks/JavaVM.framework/Versions/ rm CurrentJDK ln -s /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/ CurrentJDK 

Solution found in Mankeh Blog

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Also check this answer on Super User for dynamically switching JDK versions.

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Update: I guess I've found the culprit!

Try this:

rm -rf ~/Library/Java/Extensions sudo rm -rf /Library/Java/Extensions 

Solution found in: Java 1.7 on OSX 10.9.2 running as 1.5?