How can we fetch element from the ArrayList?a.retrieve()b.get()c.containsValue()d.find()
Question
How can we fetch element from the ArrayList?a.retrieve()b.get()c.containsValue()d.find()
Solution
We can fetch an element from the ArrayList using the get() method. Here is a step by step guide:
- First, you need to create an ArrayList. You can do this using the following code:
ArrayList<String> list = new ArrayList<String>();
- Next, you can add elements to the ArrayList using the add() method. Here is how you can do it:
list.add("Element1");
list.add("Element2");
list.add("Element3");
- Now, if you want to fetch an element from the ArrayList, you can use the get() method. The get() method requires the index of the element that you want to fetch. Here is how you can fetch an element:
String element = list.get(0);
In this case, the get() method will return the first element of the ArrayList. Remember that the index of the ArrayList starts from 0.
So, the correct answer is b.get().
Similar Questions
Which method of the List interface is used to retrieve the element at a specific index?Question 9Answera.get()b.retrieve()c.fetch()d.obtain()
Which method is used to retrieve the element at a specific index in an array in Java?Question 3Answera.get()b.retrieve()c.access()d.fetch()
What is the worst case complexity of accessing an element in ArrayList?
In Java, how can you search for the index of an element in an ArrayList named items and what is the time complexity of this operation? a. Using items.get(element) with time complexity O(1) b. Using items.indexOf(element) with time complexity O(n) c. Using items.binarySearch(element) with time complexity O(log n) d. Using items.find(element) with time complexity O(n log n)
Both array and LinkedList in Java have indexes that allow elements to be accessed by their position within the collection. When you should choose to use LinkedList rather than array?AWhen you frequently perform addition and removal of data at any point of the collection.BWhen you frequently search for a value from the collection.CWhen you frequently update the existing values in the collection.DWhen you want print all values in the collection.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.