Java Video Tutorial 19

Java Video Tutorial 19

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In this part of my Java Video Tutorial, I cover Java Regular Expressions. You use regular expressions when you want to search for data. You then use codes to define what that data looks like. It is much easier than you can imagine.

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By |2020-01-15T01:12:13+00:00January 15th, 2020|Java Video Tutorials|36 Comments

36 Comments

  1. Ridvan Caglar January 15, 2020 at 1:12 am - Reply

    I was trying to get a grasp of what regular expressions are. I read some documents but I got lost. this is video shows exactly what I wanted to know. very good explanation with a clear voice, thank you

  2. Jawad Elmokhliss January 15, 2020 at 1:12 am - Reply

    Thanks

  3. Dizzy Gogoi January 15, 2020 at 1:12 am - Reply

    You are such a good teacher, God Bless.

  4. w g January 15, 2020 at 1:12 am - Reply

    anyone from northeastern university … learning for the final exam

  5. Utkuhan Göl January 15, 2020 at 1:12 am - Reply

    Even though it's been over 7 years since you uploaded this serie of Java Tutorial it helps me a lot. Love your work man.

  6. tulachan1 January 15, 2020 at 1:12 am - Reply

    I am confused .What if there is Darek$ and we just want derek and make a token. How do you seperate those?

  7. Animesh Anand January 15, 2020 at 1:12 am - Reply

    Anyone here on October 2019 LOL

  8. HI FROM MEXICO, U ARE A FUKING GENIUS THANKS A LOT FOR THIS VIDEO REGEX IS PAIN INTHE ASS FOR ME

  9. Rohith Srikanth January 15, 2020 at 1:12 am - Reply

    is java.util.*; equal to java.util.regex.*; If yes is it necessary to remember all the packages these tutorials mentioned(for job interviews). Thanks the tuts helps a lot.

  10. S January 15, 2020 at 1:12 am - Reply

    Is it possible to generate single REGEX for list of similar Strings ….. I mean I want to give more than 2 strings as input

  11. MOONGLADE January 15, 2020 at 1:12 am - Reply

    Put your headphones, and guess What the heck on earth is he saying at the very first seconds of the video, and turn the volume up!!!!!

  12. fgdark January 15, 2020 at 1:12 am - Reply

    this formed the basis of my lexical analyzer for compilers, thank you!

  13. Metalshaper95 January 15, 2020 at 1:12 am - Reply

    0:00 "WOWOWORNENENE"

  14. Omer Baddour January 15, 2020 at 1:12 am - Reply

    for the phone number check, does it allow there to be only one parenthesis? ie (412-555-1234
    and if so, how do you ensure that if one is present, the other must be present?

  15. jeffrey wilson January 15, 2020 at 1:12 am - Reply

    Hey Derek, this is a wonderfull tutorial series so far but I was wondering if it is still relevant today? I'm asking because a proffesor of mine in university says that Java tends to change a lot with each update.

  16. Maver86 January 15, 2020 at 1:12 am - Reply

    Thank you – it helped me a lot in understanding this topic!

  17. chetan choulwar January 15, 2020 at 1:12 am - Reply

    Great work man..! Hats off..! Keep the good work up:)

  18. IllmInd4815 January 15, 2020 at 1:12 am - Reply

    You should've explained a little more what a pattern and a matcher is

  19. Melih Burak Mert January 15, 2020 at 1:12 am - Reply

    You are the Java God!

  20. Yahia Mostafa January 15, 2020 at 1:12 am - Reply

    Really nice and helpful video
    Thanks for your efforts 🙂

  21. Shitol Shojol January 15, 2020 at 1:12 am - Reply

    Write a Java code using Regular Expression that is going to sort out all cell phone numbers and print out the operator.
    Grameen: 017
    Banglalink: 019
    Airtel: 016
    Robi: 018
    * +0172-4094636, 0172-4094636, +0172-409-4636 are only three right patterns.

  22. Joel Dsouza January 15, 2020 at 1:12 am - Reply

    You are amazing….big fan of you..cant spend one day without watching your videos…..so simple and awesome and amazing…..thank you so so sooooooo much…:-):-):-)

  23. Jean Bacan January 15, 2020 at 1:12 am - Reply

    Clean , simple and direct. Tks

  24. Patrascu Lucian January 15, 2020 at 1:12 am - Reply

    I can't believe this tutorial made me understand regular expresions. Thanks Derek! Great teacher you are!

    The funny thing is that I don't understand the string.split and how comes it has indexes. Nobody does tutorials on that

  25. Netanel Edri January 15, 2020 at 1:12 am - Reply

    Can you share parts of your brain? I need some.

  26. Dante White January 15, 2020 at 1:12 am - Reply

    Wow wow wow I’m so happy

  27. camilotj January 15, 2020 at 1:12 am - Reply

    really good video, but difficult to follow and you assume the viewer knows a bunch of stuff already, which is fine, just that it wasn't my case

  28. valentine edesiri Efagene January 15, 2020 at 1:12 am - Reply

    You're a lifesaver man. I just can't thank you enough for your videos.

  29. Salman Anjum January 15, 2020 at 1:12 am - Reply

    @12:41
    if I put my regex like this: [A-Za-z0-9%_-.]+@[A-Za-z0-9._-]+[A-Za-z]{2,4}
    notice the period symbol is at the end of square brackets
    it throws an exception:
    java.util.regex.PatternSyntaxException
    why??

  30. T. M. January 15, 2020 at 1:12 am - Reply

    so happy to find this

  31. Piyush Manglani January 15, 2020 at 1:12 am - Reply

    In my longString my first name disappears why??

  32. V N Anil Kumar January 15, 2020 at 1:12 am - Reply

    Can you please explain me what is the meaning of this expression "^(?=.*[a-z])(?=.*[0-9])"

  33. Aman Sinha January 15, 2020 at 1:12 am - Reply

    If I have to find number like 12345 after AK what logic can be applied?

  34. Age of Glory January 15, 2020 at 1:12 am - Reply

    What if you don't want to match the "_" (underscore) symbol?

  35. Nikhil Gupta January 15, 2020 at 1:12 am - Reply

    At 5:33, why does 'Derek' end index is 7 and not 6?
    Moreover, why doesn't 'Banas' also a part of the output?

  36. flybeaverfly January 15, 2020 at 1:12 am - Reply

    13:28 – "It looks really really hard, but it's really really not" – this should on a wall of every workplace/classroom

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