The jxbrowser-win32.jar, jxbrowser-mac.jar, jxbrowser-linux64.jar libraries are part of JxBrowser library. They contain Chromium binaries for corresponding platform. At first run, JxBrowser extracts the binaries from appropriate JAR file into user’s temp directory on macOS and Linux, and AppData\Local\JxBrowser on Windows.
You can specify the directory path into which JxBrowser will extract Chromium binaries using the jxbrowser.chromium.dir system property. You can set the system property using the System.setProperty() method:
Or through JVM parameter:
Note: the property must be set before you create the first Browser instance in your application.
You can extract Chromium binaries from the jxbrowser-<platform>.jar JAR file manually and configure JxBrowser to use them via the jxbrowser.chromium.dir system property. This property must contain a valid absolute/relative path to the directory with extracted Chromium binaries.
JxBrowser checks the directory and if the directory doesn't contain the required Chromium files, JxBrowser searches for the binaries inside JAR files included in the application class path and extract them programmatically.
If JxBrowser cannot find Chromium binaries in the provided directory and none of the JAR files included into Java application class path contains Chromium binaries, an exception will be thrown during Browser instance initialization.