The syntax of the size()
method is:
arraylist.size()
Here, arraylist is an object of the ArrayList
class.
size() Parameters
The size()
method does not take any parameters.
size() Return Value
- returns the number of elements present in the arraylist.
Example: Get the Length of an ArrayList
import java.util.ArrayList;
class Main {
public static void main(String[] args) {
// create an ArrayList
ArrayList<String> languages = new ArrayList<>();
// insert element to the arraylist
languages.add("JavaScript");
languages.add("Java");
languages.add("Python");
System.out.println("ArrayList: " + languages);
// get the number of elements of arraylist
int size = languages.size();
System.out.println("Length of ArrayList: " + size);
}
}
Output
ArrayList: [JavaScript, Java, Python] Length of ArrayList: 3
In the above example, we have created a arraylist named languages. Here, we have used the size()
method to get the number of elements present in the arraylist.