Java Deep Clone an Object

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[oleksandr]

Dear Mike !
Thank you for excelent explanation of deep cloning, i liked how you explained with "mistakes" of not implementing Cloneable, so that other users can see which mistakes can appear on the way of deep cloning.
👍

[devpandya]

Mike really understood the thing. Thank you very much

[alexanofriev]

Thank you for explanation! I am just learning java and your video was the one which finally explained all well and easy to understand!

[alisbai]

God bless your soul till the end of time. You saved me so much time and effort.

[bobmac]

Thanks, helped me out alot with my uni work :)

[PMe-mytd]

Thanks...helped me out :-)
As a suggestion, maybe spit your code screen so thers slightly less flicking back and forth :-)

[damianocaon]

Hi, thank you for the excellent video! There's only one thing I can't understand. If I have to clone a class that extends a library class (for example I have piece, created by me, that extends Rectangle by JavaFX), how can I clone that class?

[chadjensen]

A way I've done this is to serialize the entire object to a JSON string using Jackson objectMapper. I then deserialize it into into a new object using that JSON string. It's maybe a little expensive, but it is actually pretty universal code that doesn't require me to pollute my model classes.
This code:
import
....
public static <T> T clone(Object object, Class<T> clazz) {

ObjectMapper objectMapper = new ObjectMapper();
T deepCopy = null;
try {
deepCopy = objectMapper
.readValue(objectMapper.writeValueAsString(object), clazz);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
return deepCopy;
}

[kostasgkoutis]

I was expecting the copy constructor pattern to show up. Also you forgot to mention the issue that arises when there is a cyclical reference between the original class and its captured reference (Spaceship refers to Captain, Captain refers to Spaceship)