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Vector capacity() Method in Java

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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. Syntax:
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: Program 1: Vector with string elements.
// Java code to illustrate capacity()
import java.util.*;
  
public class VectorDemo {
    public static void main(String args[])
    {
        // Creating an empty Vector
        Vector<String> vec_tor = new Vector<String>();
  
        // Use add() method to add elements into the Vector
        vec_tor.add("Welcome");
        vec_tor.add("To");
        vec_tor.add("Geeks");
        vec_tor.add("4");
        vec_tor.add("Geeks");
  
        // Displaying the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Displaying the capacity of Vector
        System.out.println("The capacity is: " + vec_tor.capacity());
    }
}

                    
Output:
Vector: [Welcome, To, Geeks, 4, Geeks]
The capacity is: 10
Program 2: Vector with Integer elements.
// Java code to illustrate capacity()
import java.util.*;
  
public class VectorDemo {
    public static void main(String args[])
    {
        // Creating an empty Vector
        Vector<Integer> vec_tor = new Vector<Integer>();
  
        // Use add() method to add elements into the Vector
        vec_tor.add(10);
        vec_tor.add(15);
        vec_tor.add(30);
        vec_tor.add(20);
        vec_tor.add(5);
  
        // Displaying the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Displaying the capacity of Vector
        System.out.println("The capacity is: " + vec_tor.capacity());
    }
}

                    
Output:
Vector: [10, 15, 30, 20, 5]
The capacity is: 10


Last Updated : 17 Aug, 2018
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