The clone() method of Vector class is used to return a shallow copy of this vector. It just creates a copy of the 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.
Syntax:
Vector.clone()
Parameters: The method does not take any parameter.
Return Value: The method returns an Object which is just the copy of the vector.
Exception :
CloneNotSupportedException − This exception is thrown if the object’s class does not support the Cloneable interface.
Below programs illustrate the Java.util.vector.clone() method:
Program 1:
// Java code to illustrate clone() 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); // Creating another vector to copy Object copy_vector = vec_tor.clone(); // Displaying the copy of vector System.out.println( "The cloned vector is: " + copy_vector); } } |
Vector: [Welcome, To, Geeks, 4, Geeks] The cloned vector is: [Welcome, To, Geeks, 4, Geeks]
Program 2:
// Java code to illustrate clone() 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 Queue 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); // Creating another vector to copy Object copy_vector = (Vector)vec_tor.clone(); // Displaying the copy of vector System.out.println( "The cloned vector is: " + copy_vector); } } |
Vector: [10, 15, 30, 20, 5] The cloned vector is: [10, 15, 30, 20, 5]
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