While working with external API's using SSL verification with java applications we are required to add certificates to the keystore.

To create a keystore use command:

keytool -genkey -alias mydomain -keyalg RSA -keystore keystore.jks

And enter all the information required by the keystore.

:mydomain is the alias for the keystore domain
:RSA is the encryption algorithm

:keystore.jks is the name for java keystore

To import an external certificate use command:

keytool -import -trustcacerts -alias root -file Cert.crt -keystore keystore.jks

:root is the alias for the certificate.

:Cert.crt is the external certificate provided by vendor.

:keystore.jks is the name for java keystore

To run a program using certificates use command:

java -Djavax.net.ssl.trustStore=keystore.jks -Djavax.net.ssl.trustStorePassword=passwd ClassName

:keystore.jks is the name for java keystore

:passwd is the password for the keystore set in step1.

:ClassName is the name of the class you want to execute.

Hope it is useful