This is how I finally found a way to find the current path of java 1.8 installation on osx yosemite.

run on the terminal:

/usr/libexec/java_home

for me it was:

/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home

then on your bash_profile add:

export /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home