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Vector capacity() Method in Java

Last Updated : 12 Dec, 2024

The Java.util.Vector.capacity() method in Java is used to get the capacity of the Vector or the length of the array present in the Vector.

Vector.capacity()

• Parameters: The method does not take any parameter.
• Return Value: The method returns the capacity or the internal data array’s length present in the Vector, which is an integer value.

Below programs illustrate the Java.util.Vector.capacity() method:

Example 1: Vector with string elements.

// Java code to demonstrate
// capacity() Method
import java.util.*;

public class GFG 
{
    public static void main(String args[])
    {
        // Creating an empty Vector
        Vector<String> v = new Vector<String>();

        // Add elements in Vector
        v.add("Welcome");
        v.add("To");
        v.add("GFG");

        // Displaying the Vector
        System.out.println("Elements of Vector : " + v);

        // Displaying the capacity of Vector
        System.out.println("The capacity is : " + v.capacity());
    }
}

Elements of Vector : [Welcome, To, GFG]
The capacity is : 10

Example 2: Vector with Integer elements.

// Java code to demonstrate
// capacity() Method
import java.util.*;

public class GFG 
{
    public static void main(String args[])
    {
        // Creating an empty Vector
        Vector<Integer> v = new Vector<Integer>();

        // Add Elements in Vector
        v.add(10);
        v.add(15);
        v.add(30);
        v.add(20);

        // Displaying the Vector
        System.out.println("Elements of Vector : " + v);

        // Displaying the capacity of Vector
        System.out.println("The capacity is : " + v.capacity());
    }
}

Elements of Vector : [10, 15, 30, 20]
The capacity is : 10

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