“Location is required” exception when loading FXML file

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The short answer is getClass().getResource("sample.fxml") returns null silently if the resource cannot be found on the runtime classpath, not the current directory etc.

So this depends on your IDE project setup, if you’re using eclipse try adding the folder that sample.fxml resides in the run configuration.

Some ideas…

  • try getClass().getResource("/sample.fxml") instead…
  • try moving sample.fxml into the resources folder. I don’t know much about your IDE, but I suspect that folder is only used for .java files… this is certainly true for gradle projects in eclipse – resources have to be in the src/main/resources tree as only that is added to the runtime classpath…

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