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Objects: Instances of Classes

AP Computer Science A· difficulty 4/5

Common cause of NPE:

  • A

    Dividing by 1

  • B

    Accessing field/method on a null reference

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  • C

    Print statement

  • D

    Comparing primitives

Explanation

<code>null.field</code> or <code>null.method()</code> always throws NPE.

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