First run /usr/libexec/java_home -V which will output something like the following:

Pick the version you want to be the default (1.6.0_65-b14-462 for arguments sake) then:

or you can specify just the major version, like:

Add the export JAVA_HOME… line to your shell’s init file.

Updating the .zshrc file should work:

Press CTRL+X to exit the editor Press Y to save your changes