You can use such trick: myObject = new ArrayList<Object>(myTempObject); or use myObject = (ArrayList<Object>)myTempObject.clone(); You can get some information about clone () method here But you should remember, that all these ways will give you a …

Sep 6, 2022 · List.copyOf () method is used to add the elements of one ArrayList to another. To use this method, we have to import the package java.util.List.* or java.util.* . It is a static factory method. Step 1: Declare the ArrayList 1 and add the values to it. Step 2: Create another ArrayList 2 with the same type.

Jun 30, 2011 · Is it possible to copy only a part of an arraylist to a new arraylist, Efficiently. for eg: copy elements between position 5 and 10 from one arraylist to another new arraylist.

Dec 18, 2018 · The Java.util.ArrayList.clone () method is used to create a shallow copy of the mentioned array list. It just creates a copy of the list. Syntax: ArrayList.clone() Parameters: This method does not take any parameters. Return Value: …

The clone() method returns a copy of the ArrayList as an Object. This creates a "shallow" copy, which means that copies of objects in the list are not created, instead the list has references to the same objects that are in the original list.

Jul 15, 2022 · In Java, there are various methods to clone a list. This article will explain some of the main methods used to achieve the same. Using a Copy Constructor: Using the ArrayList constructor in Java, a new list can be initialized with the elements from another collection. Syntax: ArrayList cloned = new ArrayList(collection c);

Mar 7, 2025 · In this short tutorial, we’ll learn how to copy an ArrayList in Java, focusing on the different ways to create a deep copy of the elements in the list. 2. Shallow Copy vs. Deep Copy. The shallow copy technique replicates the original object but copies only the references for mutable fields, not the actual objects.

Jan 12, 2023 · ArrayList.clone () creates a shallow copy of the given ArrayList. Learn to create deep copy and shallow copy of an arraylist with examples.

Apr 4, 2009 · You will need to clone the ArrayList by hand (by iterating over it and copying each element to a new ArrayList), because clone() will not do it for you. Reason for this is that the objects contained in the ArrayList may not implement Clonable themselves.

Feb 2, 2024 · ArrayList implements Collection, which allows us to use the ArrayList names1 as an argument of the addAll() method. names1 contains a few elements that should be copied to the newly created empty Arraylist names2.