Which is faster amongst an Array and an ArrayList?

0 votes

Array or List in Java. Which is faster?

Jul 20, 2018 in Java by Akrati
• 960 points
47 views

1 answer to this question.

0 votes

Array Over List:

The capacity of an Array is fixed. 
Whereas ArrayList can increase and decrease size dynamically.

An Array is a collection of similar items. 
Whereas ArrayList can hold item of different types.

An array is faster and that is because ArrayList uses a fixed amount of array. 
However when you add an element to the ArrayList and it overflows. It creates a new Array and copies every element from the old one to the new one. 

List over arrays
If you do not exceed the capacity it is going to be as fast as an array. 
Better handling and much easier way of doing things. 
 

answered Jul 20, 2018 by sophia
• 1,400 points

Related Questions In Java

0 votes
1 answer

Sorted array is being processed faster than unsorted array. Why is it so ?

What is Branch Prediction? Consider a railroad junction: Image by ...READ MORE

answered Apr 18, 2018 in Java by Rishabh
• 3,540 points
72 views
0 votes
1 answer

what is the best way to convert an ArrayList to a String

String lString = String.join(", ", list); In case ...READ MORE

answered Apr 26, 2018 in Java by developer_1
• 3,280 points
38 views
0 votes
1 answer

In which class is the "length" property of array defined ?

It's defined in the Java language specification: The members ...READ MORE

answered May 8, 2018 in Java by Rishabh
• 3,540 points
31 views
+1 vote
3 answers

What is the syntax to declare and initialize an array in java?

You can use this method: String[] strs = ...READ MORE

answered Jul 25, 2018 in Java by samarth295
• 2,190 points
197 views
0 votes
2 answers

One line initialization of an ArrayList object in Java

In Java 8 or earlier: List<String> string = ...READ MORE

answered Jul 26, 2018 in Java by samarth295
• 2,190 points
109 views
0 votes
2 answers

How to convert an array to arraylist?

In Java 9 you can use: List<String> list= List.of("Hello", "World", ...READ MORE

answered Aug 1, 2018 in Java by samarth295
• 2,190 points
33 views
0 votes
3 answers

How to sort an array in java?

import java.util.Arrays; public class Sort { ...READ MORE

answered Aug 24, 2018 in Java by parth295
• 4,600 points
49 views
0 votes
2 answers

What is the syntax to initialize an array?

Rather than learning un-Official websites learn from ...READ MORE

answered Aug 2, 2018 in Java by samarth295
• 2,190 points
39 views
0 votes
2 answers

How an object array can be converted to string array in java?

System.arraycopy is the most efficient way, but ...READ MORE

answered Aug 8, 2018 in Java by Sushmita
• 6,840 points
75 views