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How can I load resources within my application using Class.forName and ClassLoader.getSystemClassLoader in Java Web Start?

April 26, 2017application Class.forName ClassLoader.getSystemClassLoader Java load Resources web

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How can I load resources within my application using Class.forName and ClassLoader.getSystemClassLoader in Java Web Start?

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Java Web Start uses a user-level classloader to load all the application resources specified in the JNLP file. This classloader implements the security model and the downloading model defined by the JNLP specification. This is no different than how the AppletViewer or the Java Plug-In works. This has the, unfortunate, side-effect that Class.forName will not find any resources that are defined in the JNLP file. The same is true for looking up resources and classes using the system class loader (ClassLoader.getSystemClassLoader). To find application resources in Java Web Start, make sure to use the classloader that loaded your application, e.g.,: this.getClass().getClassLoader(), or Thread.getCurrent().getContextClassLoader() Also ensure that the above happens in the main thread.