Why do I get a NullPointerException when auto-unboxing?

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Why do I get a NullPointerException when auto-unboxing?

This can happen when you cast a null to a primitive type. It can be hard to spot these types of errors:

Main.java:

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The reason for the NullPointerException is much clearer if you look
at the equivalent:

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Further Information

Author of answer: Joris Van den Bogaert

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