Importing a certificate to a keystore

keytool -importcert -alias <ALIAS> -v -keystore <KEYSTORE_FILE> -file <INPUT_FILE> -storepass <KEYSTORE_PASSWORD>

Listing the certificates from a keystore

keytool -list -v -keystore <KEYSTORE_FILE> -storepass <KEYSTORE_PASSWORD>

Include the -a <ALIAS> parameter to just display a single certificate

Delete a certificate from a keystore

keytool -delete -v -alias <ALIAS> -keystore <KEYSTORE_FILE> -storepass <KEYSTORE_PASSWORD>