Maps 1, Preparations
Read the introduction on Java Collections - Map and Java Collections - SortedMap.
Consider the following array of person names:
Figure 592. An array of strings
| key | value |
|---|---|
| 0 | "Eve" |
| 1 | "Tim" |
| 2 | "Rick" |
| 3 | "June" |
| 4 | "Phyllis" |
Set of keys: {0, 1, 2, 3, 4}
Consider the following array describing (non leap year) month lengths:
Figure 593. An associative array describing month lengths
| key | value |
|---|---|
"January" |
31 |
"February" |
28 |
"March" |
31 |
| ... | ... |
"December" |
31 |
Set of keys: {"January", "February",
"March", ..., "December"}
