Discover how KeyStores act as secure vaults for storing cryptographic keys and certificates, crucial for HTTPS communications on Java web servers. Understand the role of TrustStores in storing trusted SSL certificates, vital for secure connections to remote hosts. We'll cover various use cases including HTTPS configuration, client authentication, and secure microservices communication, offering clear guidance on when and how to use KeyStores and TrustStores in your Java applications. 00:00 Introduction 00:12 What is Java KeyStore 00:33 Java KeyStore for web servers 00:55 What is Java TrustStore 01:21 Java TrustStore for Secure Connections 01:44 Use case: HTTPS LIstener 02:18 Use case: Secure connection to remote host 02:40 Use case: Self-signed SSL certificate 03:12 Use case: Auth by SSL certificate 03:36 Use case: Microservices communication 03:54 Use case: Secure accessing Cloud services 04:14 Summary