Objects: Instances of Classes

AP Computer Science A· difficulty 4/5

Java passes arguments by

A
$Pointer — addresses are passed and dereferenced$
B
$Reference — modifications to parameters propagate to the caller$
C
$Default to reference, with pass-by-value optional$
D
$Value — for primitives, the value; for objects, a copy of the reference$
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Explanation

Java is strictly pass-by-value. Object references are values; the called method gets a copy of the reference, can mutate the pointed-to object but cannot reassign the caller's variable.

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