I studied that Java passes object references by value, and in order to make a local copy of an object I can either do clone() or copy-constructor. I also looked at deep/shallow copy as well as several posts on Stack Overflow. I am looking at this example: Only a few articles I read mention that ArrayList implements cloneable, but does
Tag: clone
Java: recommended solution for deep cloning/copying an instance
I’m wondering if there is a recommended way of doing deep clone/copy of instance in java. I have 3 solutions in mind, but I can have miss some, and I’d like to have your opinion edit: include Bohzo propositon and refine question: it’s more about deep cloning than shallow cloning. Do it yourself: code the clone by hand properties after
How do I copy an object in Java?
Consider the code below: So, I want to copy the dum to dumtwo and change dum without affecting the dumtwo. But the code above is not doing that. When I change something in dum, the same change is happening in dumtwo also. I guess, when I say dumtwo = dum, Java copies the reference only. So, is there any way
How to clone ArrayList and also clone its contents?
How can I clone an ArrayList and also clone its items in Java? For example I have: And I would expect that objects in clonedList are not the same as in dogs list. Answer You will need to iterate on the items, and clone them one by one, putting the clones in your result array as you go. For that