Declarations, Initialization, and Scoping - SCJP Sun Certified Programmer for Java Platform SE6 - page 91

FIGURE 2.4 The july reference points to array of 31 GregorianCalendar references.

day

1

month

7

array reference

year

2010

0
1
2
3
.
.
30

july null

null
null

A GregorianCalendar
object

null

array object of 31
GregorianCalendar
references

Using Arrays

Every array has an attribute named length that is the size of the array. The length
attribute is particularly useful when using a for loop to iterate through the elements of the
array. For example, the following for loop initializes the 31 GregorianCalendar references
in the july array:

13. GregorianCalendar [] july;
14. july = new GregorianCalendar[31];
15. int year = 2010, month = 7;
16. for(int i = 0; i < july.length; i++) {
17. july[i] = new GregorianCalendar(year, month, i+1);
18. }