I am getting an intermittent NullPointerException in SailSourceModel.java. Specifically when I am adding triples to the RDF4J server and running multiple queries at the same time I sometimes get the ...

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It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...

While Java is one of the most in-demand and widely used programming languages in the world, it is not without its detractors. Java is not a particularly beginner-friendly language and it is rife with ...