# 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 Criterionjava_opts set in the config/java_opts.yml file
Tagsjava-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