Variable '...' might not have been initialize - final field in class [duplicate]

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• Variable might not have been initialized error 11 answers

Creating a builder pattern for the DTO facility http://ift.tt/2CDOSBp. I set the 'final' fields for most fields so that it is possible to set them only through the pattern. However, the IDE shows me an error http://ift.tt/2ohLOrJ.

For example Variable 'id' might not have been initialize.

I use this guide http://ift.tt/20s4ywx