To install the AlphaSSL Root Certificates, perform the following steps:
Use the following command to import the GlobalSign Root CA Certificate
keytool -import -alias rootca -keystore <your_keystore_filename> -trustcacerts -file globalsignrootCA.cer
Use the following command to import the Intermediate CA Certificate
keytool -import -alias rootca -keystore <your_keystore_filename> -trustcacerts -file intermediateCA.cer