Chapter 10: How to work with arrays

Question 1

What is an Array?

Answer 1

An array is an object that contains one or more items called elements.

Question 2

What are the methods associated with a the Array class?

Answer 2

type arrayName[] = new type[length];

Question 3

Describe one and two dimensional array

Answer 3

One dimension array uses a single index, whereas, two dimensional arrays use two indexes and can be thought of as columns and rows.

Question 4

Describe the “enhanced” loop

Answer 4

The enhanced, or foreach, loop doesn’t use separate expressions to initialize, test, and increment a counter variable. Instead it declares a variable that’s used to refer to each element of the array. for (type variableName : arrayName) {statements};