Handling Errors
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Three kinds of errors
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The null reference
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Null object pattern
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Zombie object
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Exceptions - a quick primer
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Design By Contract, Bertrand Meyer style
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Fatal errors: Stop the world!
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Combined approach: Fixable and non-fixable errors
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Which approach is best?
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NullPointerException
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Application Specific Exceptions
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Error object
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Optionals - Java 8 streams approach
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Review: Which approach to use?
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