JAVA servlet application ,SAML Integration for SSO (Single Sign on )

Hi Team,

I have a requirements like I needs to enable SSO for my java servlet web application .

for that we have to choose SP ,IDP as part of my organization for IDP they have choosen OKTA SSO server .

what are the key chnages we needs to chose from application and application servers ...and i have gone by https://support.smartbear.com/collaborator/docs/server/admin-tasks/single-sign-on/saml.html  it really help full but i needs from application view/server tomcat or what ever  what we needs to change ?

Thank you.