This image consists of five cylinders that represent the following:

• Application

• Provider Framework

• ProviderA: Message digest implementations SHA384 and SHA512

• ProviderB: Message digest implementations SHA256 and SHA384

• ProviderC: Message digest implementations SHA256 and SHA512

An arrow representing a call to MessageDigest.getInstance("SHA-256") starts from the Application cylinder and passes through the following cylinders in the indicated order:

1. Provider Framework

2. ProviderA

3. ProviderB

4. Provider Framework

The arrow ends at the Application cylinder. The call to MessageDigest.getInstance("SHA-256") has returned a SHA-256 message digest implementation from ProviderB.