The clone() method of CopyOnWriteArrayList returns a shallow copy of the list. The shallow copy contains exactly the same elements at the same index.
Syntax:
public Object clone()
Parameters: The function does not accept any parameters.
Return Value: The function returns a clone of the list.
Below programs illustrate the above function:
Program 1:
// Java Program to illustrate the // CopyOnWriteArrayList clone() method in Javaimport java.util.concurrent.CopyOnWriteArrayList;import java.util.*;  public class GFG {    public static void main(String[] args)    {          // create object of CopyOnWriteArrayList        CopyOnWriteArrayList<Integer> ArrLis            = new CopyOnWriteArrayList<Integer>();          // Add elements        ArrLis.add(32);        ArrLis.add(67);        ArrLis.add(98);        ArrLis.add(100);          // print CopyOnWriteArrayList        System.out.println("CopyOnWriteArrayList: "                                            + ArrLis);          // clone of the arraylist        System.out.println("CopyOnWriteArrayList: "                                    + ArrLis.clone());    }} |
Output:
CopyOnWriteArrayList: [32, 67, 98, 100] CopyOnWriteArrayList: [32, 67, 98, 100]
Program 2:
// Java Program to illustrate the // CopyOnWriteArrayList clone() method in Java  import java.util.concurrent.CopyOnWriteArrayList;import java.util.*;  public class GFG {    public static void main(String[] args)    {          // create object of CopyOnWriteArrayList        CopyOnWriteArrayList<String> ArrLis            = new CopyOnWriteArrayList<String>();          // Add elements        ArrLis.add("gopal");        ArrLis.add("gfg");        ArrLis.add("jgec");        ArrLis.add("sudo");          // print CopyOnWriteArrayList        System.out.println("CopyOnWriteArrayList: "                                           + ArrLis);          // clone of the arraylist        System.out.println("CopyOnWriteArrayList: "                                   + ArrLis.clone());    }} |
Output:
CopyOnWriteArrayList: [gopal, gfg, jgec, sudo] CopyOnWriteArrayList: [gopal, gfg, jgec, sudo]
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArrayList.html#clone–
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