How to Access XML Resources from a JAR File in a Java Desktop Application?

Accessing XML Resources from a JAR File

Accessing resources from within a JAR file can often be necessary in Java applications. This question addresses specifically the issue of reading an XML file from a JAR located in a separate JAR being executed as a desktop application.

To access the XML file from the JAR, the correct method to use is java.lang.Class.getResourceAsStream(String). Passing the file path as a string argument to this method will provide a stream for the file, which can then be parsed using the desired XML parsing methods.

An example of how to use this method is shown below:

URL url = getClass().getResourceAsStream("/xxx/xxx/xxx/services.xml");
XMLReader xr = XMLReaderFactory.createXMLReader();
xr.setContentHandler( this );
xr.setErrorHandler( this );
xr.parse( new InputSource( url ));

By utilizing getResourceAsStream instead of getResource and passing the file as a URL argument, the program will be able to successfully read the XML file from within the JAR.

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