How do I reference JavaFX FXML files stored in the `src/main/resources` folder?

Referencing JavaFX FXML Files in Resource Folders

When constructing JavaFX GUI applications, you often need to access FXML files stored in the src/main/resources folder. To do this, you can use the FXMLLoader.load() method, as you mentioned in your question.

Generic Resource Lookup Information

JavaFX FXML file lookup is part of the generic resource lookup process in Java. The resource location is passed to the FXMLLoader as input. Therefore, the resource lookup is part of your application code, not the FXMLLoader itself.

For extensive details on resource lookup for JavaFX applications, refer to:

• [Determining the Correct Path for FXML, CSS, Images, and Other Resources](https://stackoverflow.com/a/33169100/17772320)
• [Where to Put Resource Files in JavaFX](https://edencoding.com/where-to-put-resource-files-in-javafx/)

Example Usage

FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("/main.fxml"));
Parent content = loader.load();

Location Resolution Options

There are several ways to resolve the FXML file location:

1. Place all FXML files in the src/main/resources directory:

   • loader.setLocation(getClass().getResource("/main.fxml"));

2. Create a dedicated src/main/resources/fxml directory for FXML files:

   • loader.setLocation(getClass().getResource("/fxml/main.fxml"));

3. Place FXML files in a corresponding resource directory that mirrors the Java source hierarchy:

   • src/main/resources/com/mycompany/myapp:
   • loader.setLocation(getClass().getResource("main.fxml"));

FXMLLoader Usage Recommendations

• Instantiate an FXMLLoader via new FXMLLoader(), not the static methods.
• Set the location on the FXMLLoader and use load() instead of loading from a stream.
• Use getClass().getResource() to derive a URL-based location for classes.

IDE and Build Settings

Ensure your IDE or build tool copies FXML files from the resource directory to the build output directory. For Intellij settings, see:

• [How to Convert a Normal Java Project into a JavaFX Project in Intellij](https://dzone.com/articles/how-to-convert-a-normal-java-project-into-a-javafx-1)

Java Jigsaw Modular Applications

In Java modular applications, be cautious about resource lookup using class loaders. Instead, access resources directly from the class:

• Correct: ComboBoxStyling.class.getResource("/css/styleclass.css");
• Incorrect: ComboBoxStyling.class.getClassLoader().getResource("/css/styleclass.css");

The above is the detailed content of How do I reference JavaFX FXML files stored in the `src/main/resources` folder?. For more information, please follow other related articles on the PHP Chinese website!