AP® Computer Science A glossary
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Course: AP® Computer Science A Shows up in: Unit 1: Using Objects and Methods
A special literal meaning a reference variable is not associated with any object.
Appears in the course and exam description (CED): 1.4.A.11.13.B.1
A reference variable holds an object reference or, if there is no object, null. Printing a null variable prints null, but calling a method on it throws a NullPointerException.
String nickname = null;
System.out.println(nickname);Output:
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