ArrayList size() method in Java with Examples
Last Updated :
26 Nov, 2018
The size() method of java.util.ArrayList class is used to get the number of elements in this list.
Syntax:
public int size()
Returns Value: This method returns the number of elements in this list.
Below are the examples to illustrate the size() method.
Example 1:
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
try {
ArrayList<Integer>
arrlist = new ArrayList<Integer>();
arrlist.add(1);
arrlist.add(2);
arrlist.add(3);
arrlist.add(4);
arrlist.add(5);
System.out.println("Before operation: "
+ arrlist);
int size = arrlist.size();
System.out.println("Size of list = "
+ size);
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception thrown: "
+ e);
}
}
}
|
Output:
Before operation: [1, 2, 3, 4, 5]
Size of list = 5
Example 2:
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
try {
ArrayList<String>
arrlist = new ArrayList<String>();
arrlist.add("A");
arrlist.add("B");
arrlist.add("C");
System.out.println("Before operation: "
+ arrlist);
int size = arrlist.size();
System.out.println("Size of list = "
+ size);
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception thrown: "
+ e);
}
}
}
|
Output:
Before operation: [A, B, C]
Size of list = 3
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