# Java Options Framework
The Java Options Framework contributes arbitrary Java options to the application at runtime.
Note: passing Java options using a `JAVA_OPTS` environment variable is not supported and will not work.
| Detection Criterion | java_opts set in the config/java_opts.yml file |
| Tags | java-opts |
Tags are printed to standard output by the buildpack detect script
## Configuration
For general information on configuring the buildpack, refer to [Configuration and Extension][].
The framework can be configured by modifying the `config/java_opts.yml` file.
| Name | Description
| ---- | -----------
| `java_opts` | The Java options to use when running the application. All values are used without modification when invoking the JVM. The options are specified as a single YAML scalar in plain style or enclosed in single or double quotes.
[Configuration and Extension]: ../README.md#Configuration-and-Extension