Boolean Expressions

AP Computer Science A· difficulty 2/5

public static boolean equalLists(int[] a, int[] b) {
    if (a == b) return true;
    return false;
}

What is wrong?

A
$== compares references; the contents must be checked element by element$
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B
$Arrays cannot be compared at all$
C
$Nothing is wrong$
D
$The method should return false first$

Explanation

For arrays, == returns true only if both references point to the same object, not when contents are equal. The method must compare lengths and each element.

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