com.sun.image.codec.jpeg has been shipped as a non-standard API since JDK 1.2. It was always advertised as a stop-gap measure until a proper standard equivalent was provided. That replacement (javax.imageio) has been there since JDK 1.4. As a result JDK 9 finally removes the long deprecated `com.sun.image.codec.jpeg` API which has been flagged as intended for removal for several releases. Applications which still depend on it will need to be re-coded in order to run on JDK9.