java.util.Vector.capacity() Method

Description

The capacity() method is used to return the current capacity of a vector.Capacity is the length of the array kept in the vactor.

Declaration

Following is the declaration for java.util.Vector.capacity() method

public int capacity()

Parameters

• This method does not take any parameter as input.

Return Value

The method returns the current capacity of the vector as an integer value.Here capacity means the length of its internal data array, kept in the field elementData of this vector.

Exception

• NA.

Example

The following example shows the usage of java.util.Vector.capacity() method.

package com.tutorialspoint;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {
      // create an empty Vector vec   
      Vector<Integer> vec = new Vector<Integer>();

      // use add() method to add elements in the vector
      vec.add(14);
      vec.add(13);
      vec.add(12);
      vec.add(11);
      vec.add(4);
      vec.add(3);
      vec.add(2);
      vec.add(1);

      // let us print the capacity of the vector
      System.out.println("Capacity of the vector is :"+vec.capacity());                 
   }     
}

Let us compile and run the above program, this will produce the following result:

Capacity of the vector is :10