28 - Wrapper classes in Java

Wrapper classes are used to convert any data type into an object. The primitive data types are not objects; they do not belong to any class; they are defined in the language itself. Sometimes, it is required to convert data types into objects in Java language.

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[gkcs]

Thanks for the video @Codearchery!
Interesting to note that the "Void" class is a wrapper for the primitive return type "void" in java. We use this mainly when returning from "Future"s. As a side note, it's interesting to know about how java deals with these wrapper objects in memory.

For those who are keen on a very deep understanding, check out "Perm Gen" in Java. It was made obsolete in Java 8, but has some good lessons to learn from.

[cloud]

amazing work, this is one of the best tutorials I have seen, it's informative, without overcomplicating the subject!

[sagarhatti]

this is next level yar, anyone can understand java like this best way, great lovely, hatts off man just don't stop making videos like this..

[arunasrivastava]

This video is so well done, thank you for helping me with my CS class!

[fyune]

thank you so much, best explanation of anything i have ever seen, thank you so much for your efforts :)

[ThinboxStudios]

Autoboxing: Converting a primitive value into an object of the corresponding wrapper class is called autoboxing.
Unboxing: Converting an object of a wrapper type to its corresponding primitive value is called unboxing.

[tybargky]

Thank you so much!! This is an AMAZING VIDEO !!!!

[viithalbhat]

Bro your video was really precise. The moment I watched this video I liked & subscribed. Your way of teaching is very good. Unfortunately, YouTube algorithm sucks.

[Samad_]

Now it is possible to write Integer a = 20; int b = a; we can do it directly

[stunninggowri]

Excellent demonstration bro. It helped. Thanks a lot

[visheshmishra]

amazing video man. I am new to programming and this was probably the best vdio on this. I have a question, can we write wrapper classes of our own? can u plz explain with an example?

[vigneshrasa]

Just awesome explanations...
Keep it up...

[bagoahmadov]

Integer i = new Integer(10) - its rarely used. Unnecessary boxing 'new Integer(19)'
'Integer(int)' is deprecated

[steffanomalaga]

Thank you for the video. I'm still not clear on the need to make a primitive an object, to me it seems easier to just used primitive. I'm sure there are more complex reasons to use them, but what are some applications for wrapper classes?

[sarderfarhannasirzilan]

The tutorial was quiet good. Can you make it scripted and more informative to turn it great?

[Wes-Tyler]

You write dots incorrectly. In English, dots in the middle (how you write them) means multiplication. You want to write the dots at the bottom to symbolize dots, decimal points, etc.

[manishpushpkar]

Bro vedio was awsum but a sujjesion always use white background...

[noorpasha]

How to define a custom type for both account and contact object using wrapper class?

Thanks,

[SammyBoo]

Still confused about the unboxing. int j = i intValue doesn't make sense to me. Is it being multiplied? if so, it would need an asterisk, not a dot. Is it supposed to be i.intValue();?

[nslover]

wow just very informative, thank you a lot . I have a request what is the name of the background music you have put during the video