How to clone ArrayList and also clone its contents?

Question

How can I clone an ArrayList and also clone its items in Java?

For example I have:

ArrayList dogs = getDogs();
ArrayList

        

Answer 1

The below worked for me..

in Dog.java

public Class Dog{

private String a,b;

public Dog(){} //no args constructor

public Dog(Dog d){ // copy constructor
   this.a=d.a;
   this.b=d.b;
}

}

 -------------------------

 private List createCopy(List dogs) {
 List newDogsList= new ArrayList<>();
 if (CollectionUtils.isNotEmpty(dogs)) {
 dogs.stream().forEach(dog-> newDogsList.add((Dog) SerializationUtils.clone(dog)));
 }
 return newDogsList;
 }

Here the new list which got created from createCopy method is created through SerializationUtils.clone(). So any change made to new list will not affect original list