Builds failing after upgrading to Java7, Missing Tools.jar and bad class versions

Question

I recently upgraded to Java7 on my Macbook Pro. I downloaded the JDK (not the JRE).

» javac version
javac 1.7.0_17

» echo $JAVA_HOME    
/Library/Java/Java         


        

Answer 1

If you find that the tools.jar in /Library/Java/Extensions is not from the right version of the JDK, then move it out of the way, so that there is no tools.jar there and there is a tools.jar in $JAVA_HOME/lib (as set in the previous response).

eg

cd 
sudo mv /Library/Java/Extensions/tools.jar tools.jar.safe