java.util.Vector.clone() Method


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Description

The clone() method is used to get another copy of an existing vector.The copy will have a reference to a clone of the internal data array but not a reference to the original internal data array.

Declaration

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

public Object clone()

Parameters

  • This method does not take any parameter as input.

Return Value

Object--The method call returns a clone of this vector as an object.

Exception

  • CloneNotSupportedException -- This exception is thrown if the object's class does not support the Cloneable interface.

Example

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

package com.tutorialspoint;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {
   // create an empty Vector vec with an initial capacity of 4      
   Vector<Integer> vec = new Vector<Integer>(4);
   Vector<Integer> vecclone = new Vector<Integer>(4);

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

   // let us print all the elements available in vec
   System.out.println("Added numbers in vec vector are :- "); 
   for (Integer number : vec) {         
   System.out.println("Number = " + number);
   }
      
   // let us clone the vector vec
   vecclone=(Vector)vec.clone();
      
   // let us print all the elements available in vecclone
   System.out.println("Added numbers in vecclone vector are :-");       
   for (Integer number : vecclone) {         
   System.out.println("Number = " + number);
   }
   }    
}

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

Added numbers in vec vector are :- 
Number = 4
Number = 3
Number = 2
Number = 1
Added numbers in vecclone vector are :-
Number = 4
Number = 3
Number = 2
Number = 1

java_util_vector.htm

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