Java Tutorial # 20 | Integer, Double, Float -Wrapper Classes in Java

Wrapper classes in java help to wrap the primitive data types to Objects. They also help to convert from String to primitive types. In this tutorial, i have demonstrated how some of the methods like parseInt(), valueOf(), intValue() kind of methods work and help in conversion.
Wrapper classes are Immutable objects in java.

[mallikavelagapudi]

one and only video to learn about uses of wrapper classes!!!!thankyou !!!

[singhalutsav]

1:24 Double class has no float argument constructor.
It has only two constructors like others - taking String and double arguments.

[shoebkazi]

Nice Explanation!!! Sir can you please add String, StringBuffer and StringBuilder also collections topics.

[sathishkumarbalasubramania]

Thank you Sir. Well explained. Information packed with good examples on all the topics.

[Akbm]

thanks 4 d lesson but i couldnt find its pdf document as said by u in java9s website.can u give me d link

[singhalutsav]

Mistake: at 4:30 : All wrapper classes have  static valueOf method as in Integer class:
static Integer valueOf(int i)
I suppose you meant that any overloaded form of valueOf(String s) is not available.

[NafiLata]

thankyou sir, this video help me to solve my problem. :)

[sujit]

not so effective try making videos with some images so it would be easier to grasp

[twinkleVlog]

I didn't find this vedios lecture atall helpfull.There is a suggestion though, explanations can be made more apt by showing examples for each of them, the visuals can be made more appealing, and the last but not the least the output you are showing aren't visible atall so it is not making atall appealing nor comfortable for a beginner to understand the concepts in-depth.

[prajwalwagh]

i was feling sleepy while wathing, the video was not good i got boored