Java Null Keyword - How To Use Null in Java #44

Рет қаралды 27,428

Күн бұрын

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The java null keyword lets you make a String or object empty. In java, null is super important, and in this video, I teach you all about it!
String a = null;
Now if you try to use a method on "a", you will get a null pointer exception. You can't make a primitive type null.
I hope you enjoyed this java null keyword tutorial!
Full Java Tutorial For Beginners Playlist: • Full Java Course by Al...
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Alex Lee

Пікірлер: 57

@alexlorenlee 9 ай бұрын

If you’re new to programming but want a career in tech, I HIGHLY RECOMMEND applying to one of Springboard’s online coding bootcamps (use code ALEXLEE for $1,000 off): bit.ly/3HX970h

@HumptyDumptyActual 4 жыл бұрын

The hairstyle looks good. Keep this look.

@tijmen1940 4 жыл бұрын

I've watched this whole playlist and I've learned so many new things! thank you! Now I'll start watching your Intermediate 1 playlist!

@mannyokafor4609 4 жыл бұрын

how two days ago????

@tijmen1940 4 жыл бұрын

@@mannyokafor4609 I watched the intermediate java playlist and in there it was already visible

@mngf749 4 жыл бұрын

@@tijmen1940he is not asking about day. Looks like you made this comment 2 days ago but this video published 6 hours ago.

@tijmen1940 4 жыл бұрын

@@mngf749 No i know, I gave an explanation.

@marquezdelfin1504 4 жыл бұрын

Hey Alex, I wanted to say thank you for all the Java help! Last semster, I took an accelerated Java course, and from the start I was overwhelmed with my weekly programming assignments. However, I am thankful, you had all the videos that covered all of my questions! I went from failing the class to finishing with a B+, while also acing my final!! Keep up the great work!! 🔥🔥

@handsome_lad 4 жыл бұрын

Your videos always help me with my projects, Thank You :D

@mngf749 4 жыл бұрын

Hey Alex! thnks for everything man. I can appreciate you enough . Support you from Turkey!

@vikrantsharma8249 4 жыл бұрын

come for the cuteness, stay for the learning

@derekliu1890 4 жыл бұрын

Hey Alex, thank you so much for making all these amazing tutorials, helps me a lot! Would you please consider making videos about block in Java. {block}

@miguelrosal7080 4 жыл бұрын

Best java teacher, hope to see a tutorial of retry the try catch. 😊

@abhijitbiradar 4 жыл бұрын

Very informative video explained in simple way...pls upload such more videos

@snprkiller9467 4 жыл бұрын

Best Java tutorials on youtube

@ericamuhammad5082 2 жыл бұрын

Thank you!

@ronanmuatuli6086 11 ай бұрын

I can always rely on this dude.

@kytrasbangers8140 3 жыл бұрын

I love your content I'm subcribing

@liambrain7551 4 жыл бұрын

Please do an assertions/unit testing video!

@yusufkaya2226 4 жыл бұрын

that's a great video.

@RadarTutorials 4 жыл бұрын

Hey, Alex do a video on annotations please!!!

@burhanuddinujjainwala144 4 жыл бұрын

Cool Tutor😎

@comet7762 4 жыл бұрын

thanks!

@faenoxbeats9706 2 жыл бұрын

Thanks so much bro. Your tutorials are really helpful and easy to understand. Thanks a lot. Can you please make video tutorials following the Java SE 11 exam guide. Please bro I would really appreciate that. ♥ from Zimbabwe

@rswinds222 4 жыл бұрын

great content. Can you make some project for practice?

@snirego378 4 жыл бұрын

Can you make video about Iterators & Iterables ? Thanks!

@jonahrivera7 3 жыл бұрын

Can you please do a passing object to method video? TY

@fuzedcable5612 4 жыл бұрын

Can you make this video: Make a GUI with two JButtons

@ariton2990 4 жыл бұрын

Just add a second button object. What are you having problems with?

@liambrain7551 4 жыл бұрын

Please do a StdDraw tutorial !

@ricksanchez9218 4 жыл бұрын

Hey alex could you please make some tutorials on python and swift please........

@paulogouveia855 3 жыл бұрын

How would you set integer objects to null?

@StrangeDooropen 5 ай бұрын

Did anyone notice the FartGenerator project Lmaoo

@aamird5760 4 жыл бұрын

The discord link has expired.

@AeV_artss Жыл бұрын

can you do programming in vs code/visual code?

@melihgezer8839 2 жыл бұрын

Hey Alex ı got a question. What if we write just " int b; ", then try to print b? Is it null? I mean when we write "int b;" or "String c; é Whats the difference between primitives and objects?

@kitchentable8529 4 жыл бұрын

so null isn't the same as 0, right?

@renecabuhan1675 4 жыл бұрын

Waiting for new video

@MO-dd3cs 4 жыл бұрын

Why don't you join us with the java swing project?

@SAMP-ur6uf 3 жыл бұрын

Which IDE is this??

@bscorvin 3 жыл бұрын

For some reason I didn’t realize you can’t use null on primitive types??? thanks

@reddit123 Жыл бұрын

so null is just nonexistent. so could I use it to delete user data like this string UserPass = "tea"; userPass = Null;

@Tony.Nguyen137 3 жыл бұрын

If I have String a = null; and String c = null, I can use the == operator to compare them >> if (a == c) { do this...}; But why ist it even possible (a==c) when the operator == only compares the references ?! both are null, they have no references. And why I cant compare String a with Arraylist b which is also null >> if (a == b) {do this..}