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Java Java Data Structures - Retired Organizing Data Review Arrays

Jan Gooßens
Jan Gooßens
22,344 Points
Posted by Jan Gooßens
Jan Gooßens
22,344 Points

Array Quiz

String[] jacksons = new String[5];

jacksons[0] = "Michael";

jacksons[1] = "Tito";

What is the result of the expression jacksons.length ?

The answers are 2 or 5.

But i think it has to be 6 because of the start from zero ? Right?

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

While I can certainly see why you would think so the answer is in fact 5.

When you create a new array the number you put in the brackets is the number of objects you want to create. So 5 objects are created in the array at the start. Since the length property counts the number of objects (not their index) it will return 5 when there are 5 objects.