How to get length of an ArrayList in Java
In this post we will give you information about How to get length of an ArrayList in Java. Hear we will give you detail about How to get length of an ArrayList in JavaAnd how to use it also give you demo for it if it is necessary.
we are going to learn about how to get the length/size of a given ArrayList in Java.
Consider, we have the following ArrayList:
ArrayList<String> users = new ArrayList<>(Arrays.asList("john", "kevin", "rose"));Now, we need to find out the length of an above users arraylist.
Using size() method
To get the length of an ArrayList, we can use the built-in size() method of java.util.ArrayList class.
The size() method returns the total number of elements in a arraylist in integer format.
Here is an example, that gets the length of a users list:
import java.util.ArrayList;import java.util.Arrays;public class Main{ public static void main(String[] args) { ArrayList<String> users = new ArrayList<>(Arrays.asList("john", "kevin", "rose")); int length = users.size(); System.out.println(length); }}Output:
3
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