Doesn't it make sense to necessarily initialize references to some object to avoid NullPointerExceptions ? Can this be done ?
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 Q1. Doesn't it make sense to necessarily initialize references to some object to avoid NullPointerExceptions ? Can this be done ?Core Java2017-03-16 09:54:16

Ans. We can declare the reference as final to avoid reassignment but again we can always initialize the final reference to null. Even if there was any such facility available , it would have meant poor use of resources by assigning a new object in memory to each reference that's created. Many a times references are just meant to refer to other objects which already have a reference i.e sharing object by multiple references.

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