Which of these collection class has the ability to grow dynamically?Options: Pick one correct answer from belowArrayArraysArrayListNone of these
Question
Which of these collection class has the ability to grow dynamically?
Options:
- Pick one correct answer from below
- Array
- Arrays
- ArrayList
- None of these
Solution
Answer
The correct answer is ArrayList.
Explanation
-
Array: This is a fixed-size data structure. Once the size of an array is defined, it cannot grow dynamically. If you need more space, a new larger array must be created and elements must be copied over, which is not efficient.
-
Arrays: Similar to arrays, arrays come with a fixed size. Again, they cannot grow dynamically.
-
ArrayList: This class in Java is designed to support dynamic arrays. When an ArrayList reaches its capacity, it automatically increases its size to accommodate more elements.
-
None of these: This option would imply that no collection class supports dynamic resizing, which is incorrect as ArrayList does.
Thus, the only collection class among the given options that can grow dynamically is ArrayList.
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