java5-sdk-headless software package provides virtual package provided by openjdk-8-jdk-headless, default-jdk-headless, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install java5-sdk-headless
java5-sdk-headless is installed in your system.
Make ensure the java5-sdk-headless package were installed using the commands given below,
$ sudo dpkg-query -l | grep java5-sdk-headless*
You will get with java5-sdk-headless package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Virtual packages |
| Package | java5-sdk-headless |
| Version | |
| Description | virtual package provided by openjdk-8-jdk-headless, default-jdk-headless |
| Sub Section | Virtual |