Input your key and cert to create a cert.pfx file with the password "src-passwordForCert.pfx"
openssl pkcs12 -export -out cert.pfx -inkey server.key -in server.crt -password pass:src-passwordForCert.pfx
Convert cert.pfx to a .jks file. This command will prompt you to create a new password for the .jks (destination), then it will ask you for the password to cert.pfx (source).
keytool -importkeystore -srckeystore cert.pfx -destkeystore nb-data-services.jks -srcstoretype pkcs12