What is null and a null pointer exception? (Java Tutorial)

null

null pointer excecption

NullPointerException

reference

varaible

AP Computer Science

Java

College Board

AP Computer Science A

APCSA

AP CS A

AP CSA

exam

tutorial

tutorials

AP Computer Science A Java

AP Computer Science A crash course

example

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uninitialized

initialized

Java tutorial

how to fix

java null pointer exception how to fix

Java nullpointerexception

java.lang.nullpointerexception