KwickClips Java · 40 sec · free
Which one needs brackets?
Short answer. String length() is a method; array length is a field with no brackets.
Where does indexing start?
At 0 for both arrays and Strings.
Arrays vs Strings
| Task | Array | String |
|---|---|---|
| Size | m.length | s.length() |
| Item | m[0] | s.charAt(0) |
| First index | 0 | 0 |
Remember
| Array: length |
| String: length() |
| Both start at index 0 |
One needs brackets, one does not. Which is which? An array uses length with no brackets. A String uses the length method. Both start at index zero. Array, length. String, length with brackets. Both start at zero.
This clip is from the full lesson: ISC Class XI Java Revision in One Go — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ISC Class 12 Computer Science (868)
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