Answer by Ryan Shillington for Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed Error?

My cacerts file was totally empty. I solved this by copying the cacerts file off my windows machine (that's using Oracle Java 7) and scp'd it to my Linux box (OpenJDK).

cd %JAVA_HOME%/jre/lib/security/scp cacerts mylinuxmachin:/tmp

and then on the linux machine

cp /tmp/cacerts /etc/ssl/certs/java/cacerts

It's worked great so far.