java.lang.CloneNotSupportedException while cloning the object in java

In this Example we are going to understanding the clone in Java and its exceptons..

Error Message :

Exception in thread "main" java.lang.CloneNotSupportedException: com.si.cloneSample

       at java.base/java.lang.Object.clone(Native Method)

       at com.si.cloneSample.main(cloneSample.java:15)

Error Description :

package com.si;

public class cloneSample {

      

       int number;

       Integer[] intArray;

       cloneSample(int num){

              number  = num;

              intArray= new Integer[number];

             

       }

       public static void main(String[] args) throws CloneNotSupportedException {

              cloneSample samp1 = new cloneSample(15);

              cloneSample copy = (cloneSample) samp1.clone();

              samp1.intArray[0]= 1;

              System.out.println(samp1.intArray[0]);

       }

}

In the above example ,the red background color line is giving the exception.

Clone the object wont happen if that object is not implementing the Cloneable.

Solution:

To avoid this exception we should implements the Cloneable interface all the time while doing the cloning process.

package com.si;

public class cloneSample implements Cloneable {

      

       int number;

       Integer[] intArray;

       cloneSample(int num){

              number  = num;

              intArray= new Integer[number];

             

       }

       public static void main(String[] args) throws CloneNotSupportedException {

              cloneSample samp1 = new cloneSample(15);

              cloneSample copy = (cloneSample) samp1.clone();

              samp1.intArray[0]= 1;

              System.out.println(samp1.intArray[0]);

       }

}

                         

Output:

1