KwickClips Java · 38 sec · free
Can an ArrayList hold int values directly?
Short answer. No. It holds objects, so you use Integer.
What does get(0) return?
The first item, because indexes start at 0.
Remember
| Holds objects, like Integer |
| Index starts at 0 |
Need a list that grows by itself? Import java dot util. Add puts items at the end. Get of zero reads Tea. Size gives two. It holds objects, like Integer. Index starts at zero.
This clip is from the full lesson: ArrayList and Collections — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Programming All levels Java
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