AP Computer Science Amediummcq1 pt
Reading the length of a null array reference causes
A.a NullPointerException
B.0 to be returned
C.a compile error
D.an empty array
Explanation
Core Concept
Dereferencing null fails.
Correct Answer
Aa NullPointerException
More Unit 6: Array practice questions
- easyThe bounds check that throws ArrayIndexOutOfBoundsException happens
- easyWhich correctly declares an array variable without creating it?
- mediumTraversing a partially filled array should iterate
- mediumA partially filled array uses a separate variable to
- easySetting every element of an int array to zero uses
Practice more AP Computer Science A questions with full explanations
Practice Unit 6: Array Questions →