Java ArrayList size() Method
Java ArrayListThe size() method is used to return the number of elements in the dynamic array.
The syntax of the size() method is:
arraylist.size()
Note:arraylist is an object of the ArrayList class.
Parameter description:
- None
Return Value
Returns the number of elements in the array.
Example
Get the length of the dynamic array:
Example
import java.util.ArrayList;
class Main {
public static void main(String[] args){
// Create a dynamic array
ArrayList<String> sites = new ArrayList<>();
sites.add("Google");
sites.add("Example");
sites.add("Taobao");
System.out.println("Website list: " + sites);
// Get the number of elements in the array
int size = sites.size();
System.out.println("Dynamic array length: " + size);
}
}
class Main {
public static void main(String[] args){
// Create a dynamic array
ArrayList<String> sites = new ArrayList<>();
sites.add("Google");
sites.add("Example");
sites.add("Taobao");
System.out.println("Website list: " + sites);
// Get the number of elements in the array
int size = sites.size();
System.out.println("Dynamic array length: " + size);
}
}
Executing the above program produces the following output:
网站列表: [Google, Example, Taobao] 动态数组长度: 3
In the above example, we created a dynamic array named sites, and then used the size() method to get the number of elements in the dynamic array.
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