Very confident, detailed , backed by coding , fluent and clean recording. An excellent work. People who saw this 7 years ago are very lucky. I just got it end of 2022.
Hi Ranjith, All your videos are well organized,precise and touch upon areas where generally there is some ambiguity in understanding. Your videos gives lot of clarity on so many areas which were hazy earlier. Thanks a lot for all your efforts and knowledge sharing. Someone rightly commented they are really addictive. I am in Tutorialthon with your channel.
Very nice video Ranjith . If possible, please make videos on serialization and multithreading and the insights which you think a java developer should know. Thanks a lot.
Good Explanation Ranjith. This is one of the bet videos i have ever seen on String topic. Especially your explanation on memory leakage was superb. Waiting for more videos from you. Thank you very much.
Very informative and clearly explained. I am new to Java and was totally able to understand how this was explained. Great Stuff. Keep posting more videos.
Great videos! Your explanation is really easy to understand with examples. Looking forward to upcoming videos. Thanks for taking out time and making these. Really helpful
Thanks Ranjith, I loved your video. It cleared lots of my confusions. The best part is the "Best Practice" you included. Please do include this part in you other videos as we generally lag in best practice.
Your explanation is really great I appreciate your effort it is helpful to be clear with all minor details that JVM takes into consideration.Looking forward for Threads video from you
your teaching was super amazing very clear and in depth ...do make some videos on tricky java interview questions like 1. FINDING WHITE SPACES IN A GIVEN SENTENCE 2.FINDING NO OF DUPLICATE WORDS IN A SENTENCE 3. AND SOME INTERSTING CONCEPTS USIGN ARRAYS..
Hi Ranjith, Really nice tutorials. Would request you to upload videos on some advanced topics such as multithreading, database connectivity, and may be some tricky java interview questions. Thank you for the awesome work. Keep it up.
Unlike other videos, you have some originality in explaining without misleading the actual reasons. Good work ! If password is stored in char[ ] array , heap dump will have that too, maybe the approach shortening the time, certainly better than storing it in String but still not ideal to store clear text in char array as well. Right ?
Hi Ranjith, Excellent presentation keep it up. Am waiting for ur next GC video,please also provide, How to handle externally GC in java. HashMap explanation is supb
nice explanation it's really very helpful for interviews and learning. do u have any site or blog if there please post the link here we can read . thank you
Hi Ranjith..excellent presentation.. keep it up...one question is ... with 1.7 as string constant pool is moved from permgenspace to heap, will these string constants be garbage collectable? if so how the cache of the strings is maintained?
Ravi Kumar , Yes Java 7 & 8 uses heap for String pool. At the same time,code objects(Byte code/compiled code) will contain one or more references to the String objects that represent the literals.So as long as the code objects are reachable, the String objects will be too - and hence it will not be garbage collected until the class that refers them itself is GC'd. The data structure that stores the pool is a map. I am planning a video on GC very soon, please subscribe for updates if you haven't already.
Thank you - for this. You mentioned how a String's hashCode is cached once it has been 'interned' - but you've not mentioned how a check is done for a String existing on the current string pool. Doesn't this involve calculating some hash code?
I have one question wrt using new String(). As new String creation will not create anything in String pool instead it creates new object outside string pool correct. Then what is exact use of it?
Hi Ranjith, I have a doubt on one statement that you have made - String "Caches the hashcodes". also mentioned that it will be helpful in HashMaps. Consider the following: String s1 = "Hello"; String s2 = "Hey"; String s3 = "Hello"; Map m = new HashMap(); m.put(s1, 1); // Here it computes the hashcode of s1 (lets say h1 ) and cached m.put(s2, 2); // Here it computes the hashcode of s2 (lets say h2) and cached now as per my understanding of your statement, if we try to do m.put(s3,3) it will not compute the hash code again. Instead, it will get it (h1) from "hashcode cache" as s1 and s3 are equal. My question is how does it know that the hashcode (h1) is of s1/s3? Will it maintain any map between String and hashcodes so that as s1.equals(s3), h1 is returned. Please clarify me if I am interpreting it wrong,
If you dont call the intern method, simply if you call the hashcode function for S1 ="Hello" and S3 = new String("Hello"), it will have the same hashcode value but '==' equal method returns false. Does it mean internally they are same ? and intern is used to just have the equality of the object?
Thanks for this video. I had a question, given strings are cached in string pool I am correct in saying that those strings will not be garbage collected? Some people mention that only string literals and strings which are interned are cached in string pool is that true. Say String sFirstName = objUser.getFirstName() will the value of sFirstName be cached or not ?
![[VDM19] Enough java.lang.String to Hang Ourselves ... by Heinz Kabutz](http://i.ytimg.com/vi/z3yu1kjtcok/mqdefault.jpg)
The best video on String Class. No one in the TH-cam has explained this way.
Very confident, detailed , backed by coding , fluent and clean recording. An excellent work. People who saw this 7 years ago are very lucky. I just got it end of 2022.
Explanation 🔥🔥
Well.A genius at it's best..Great explanation
I'm definitely looking forward to hearing new in-depth tutorials from you, man!
Very good explanation. Thank you very much Sir.
You are the best. Best String explanation ever.
Very informative.. Really Great..
I can totally see why people miss your videos. Very good.
Amazing in depth tutorial of the String class. Need more tutorials like these!
Please publish some videos on advance multi threading topic
Yes Please we want multithreading
I agree. I'd love to hear your explanations on multi-threading!
Hi Ranjith,
All your videos are well organized,precise and touch upon areas where generally there is some ambiguity in understanding.
Your videos gives lot of clarity on so many areas which were hazy earlier.
Thanks a lot for all your efforts and knowledge sharing.
Someone rightly commented they are really addictive. I am in Tutorialthon with your channel.
I am just zabra fan of you too much simplistic way to explain. Big salute to you.
Precise explanation on String. Amazing! It's hard to find such videos.
Thanks Ranjit.
Very clear and neat explosion on string concept with simple example programs....
Thanks you ! . Your explanation technique is just awesome.
Thanks for sharing your knowledge and for time as well. Great explanation.
Awesome... I've learned so mch tdy abt String.. It helps me a lot. Thanks....
Really helpful videos. I think you should create more such videos :)
Your way of explanation is awesome sir !!! Hope you start uploading such awesome content in future !
cool video..crisp and clear..waiting for more videos from java guru..
Beyond Appreciation!!! Thanks for sharing.
all of your videos are so helpful! thank you for making these!
+Lauren Leung do you know anything about the encoding stuff in java?
Very nice video Ranjith . If possible, please make videos on serialization and multithreading and the insights which you think a java developer should know.
Thanks a lot.
Very important topic in JAVA, very well explained.
Good Explanation Ranjith. This is one of the bet videos i have ever seen on String topic. Especially your explanation on memory leakage was superb. Waiting for more videos from you. Thank you very much.
Very informative and clearly explained. I am new to Java and was totally able to understand how this was explained. Great Stuff. Keep posting more videos.
Great videos! Your explanation is really easy to understand with examples. Looking forward to upcoming videos. Thanks for taking out time and making these. Really helpful
Explained in the clearest way, I wonder why you stopped uploading videos..
Very nicely explained :) One of the best explanations i have seen. please keep making more videos.
Very clear explanation. Please make more videos on Java. It will be very helpful for many.
Very useful and nice video, Ranjith. In depth tutorial.
Best teacher for the java award goes to Ranjith...............Sir please add more videos
Thank you Ranjith, very informative session on java.lang.String.
i appreciate your all efforts in terms of sharing these knowledge based videos.
Thanks a lot very helpful
Thanks Ranjith. Very well explained . I apperciate your work.
Excellent!!!! superb
Excellent concise demo !
Realy useful, Thanks.
great video. Request to post many more such videos.
Thanks for this awesome video! One of the best 39 minutes i have invested in my life. Keep up the great work :)
Thanks for such a great explanation!!
Awesome explanation.
Keep posting.
Great work Ranjith, the videos are really helpful, please make videos on other concepts as well.
+Radha kankanala Thanks, please subscribe :)
Your are Topics are really Insight full and very interesting , Getting addicted to more of you courses , Keep up the good work :-)
+ramanathan shankar Thanks for the kind words! pls subscribe, I try to release at least 1 video in 2 weeks.
Very nice videos ranjith. keep going.Looking forward to learn a lot from your videos.I would like to recommend your videos to my friends.
Awesome Ranjith, your videos are so detail I am just loving it ...
Ranjith,well explained..awaiting more videos from you..
Hi Ranjith.. Good presentation. This video helped me to understand the String concepts.thanks a lot.
Thanks Ranjith... like your style of presentation.
Thanks Ranjith, I loved your video. It cleared lots of my confusions.
Awesome Explanation :)
Thanks Ranjith, I loved your video. It cleared lots of my confusions.
The best part is the "Best Practice" you included. Please do include this part in you other videos as we generally lag in best practice.
really great work...
Your explanation is really great I appreciate your effort it is helpful to be clear with all minor details that JVM takes into consideration.Looking forward for Threads video from you
Fantastic explanation. Waiting eagerly for your concurrency , exception handling and multi-threading videos.
Ravi Punia thanks, planning videos in GC, concurrency etc in upcoming episodes, please stay tuned, subscribe to the channel- if you haven't already.
Fantastic Tutorials!!! Really Helpful! Thanks! Will you be doing more of these?
Really Helpful...
Great explanation! Please make more videos :)
Hello, your videos are really helpful . Please upload more !
some latest thing i knew after video like scp in heap memory, memory leak better n good explanation
Hi Ranjith sir,Excellent presentation.thank you..........
Very Nice learning Ranjith. Excellent
Really Helpful.. Please continue and make more videos for other concepts. Learning a lo from these
can you please upload more videos...your videos are very usefull for beginners
your teaching was super amazing very clear and in depth ...do make some videos on tricky java interview questions like
1. FINDING WHITE SPACES IN A GIVEN SENTENCE
2.FINDING NO OF DUPLICATE WORDS IN A SENTENCE
3. AND SOME INTERSTING CONCEPTS USIGN ARRAYS..
Great video!! Why have you stopped making more videos??
Just love watching ur videos :)
Thanks alot Ranjith. Your videos on java are awesome, not comparable to others.
Hi Ranjith,
Really nice tutorials. Would request you to upload videos on some advanced topics such as multithreading, database connectivity, and may be some tricky java interview questions. Thank you for the awesome work. Keep it up.
amazing thanks Ranjit, if possible can you share the java collections videos?
Awesome work. if you ever make a course please share a link, i'd love to buy
It just awesome Ranjith, Thanks for presentation
Unlike other videos, you have some originality in explaining without misleading the actual reasons. Good work !
If password is stored in char[ ] array , heap dump will have that too, maybe the approach shortening the time, certainly better than storing it in String but still not ideal to store clear text in char array as well. Right ?
If you can describe about the flyweight design pattern which has been implemented for java.lang.String, that would be great.
Hi Ranjith, Excellent presentation keep it up.
Am waiting for ur next GC video,please also provide, How to handle externally GC in java.
HashMap explanation is supb
Kumar Nagaraju Pls check out th-cam.com/video/UnaNQgzw4zY/w-d-xo.html - let me know if there are questions
good one...
superb explanation. Can you please add topics about concurrency , threads ,Security.
kalidas k Thanks! yes, I am planning to put those out. Meanwhile please subscribe/check out other videos in my channel.
Very good!!!!
A very nice video. In the multithreading concept, Can you please explain why wait and notify methods present in object class but not in thread class
man, why did you stopped making videos. Your videos are best.
24:@2 - man, from where did you get the info such that substring has memory leak till java 1.7
Nice explanation
create,clearify what's been confusing!Would you cast some light on string encoding in java,such the getBytes[] method from String class
Ranjith sir, you are awesome but why only few videos, please make videos on java 8.
Its Amazing, pls provide some videos on ExecutorServices
good job ranjith.
nice explanation it's really very helpful for interviews and learning. do u have any site or blog if there please post the link here we can read .
thank you
Hi Ranjith..excellent presentation.. keep it up...one question is ... with 1.7 as string constant pool is moved from permgenspace to heap, will these string constants be garbage collectable? if so how the cache of the strings is maintained?
Ravi Kumar , Yes Java 7 & 8 uses heap for String pool. At the same time,code objects(Byte code/compiled code) will contain one or more references to the String objects that represent the literals.So as long as the code objects are reachable, the String objects will be too - and hence it will not be garbage collected until the class that refers them itself is GC'd. The data structure that stores the pool is a map. I am planning a video on GC very soon, please subscribe for updates if you haven't already.
Gold!
Hello bro no videos for long time i seen all your videos will you post again shall we expect a new videos from you.
Thank you - for this. You mentioned how a String's hashCode is cached once it has been 'interned' - but you've not mentioned how a check is done for a String existing on the current string pool. Doesn't this involve calculating some hash code?
(Very nice)*1000 and if you have time please make a video on class loaders topic.
Thank you so much
Hope this will help th-cam.com/video/ZBJ0u9MaKtM/w-d-xo.html a little bit
I have seen this tutorial before , but that not fully explanation about Class loader.
I have one question wrt using new String(). As new String creation will not create anything in String pool instead it creates new object outside string pool correct. Then what is exact use of it?
Hi Ranjith,
I have a doubt on one statement that you have made - String "Caches the hashcodes". also mentioned that it will be helpful in HashMaps.
Consider the following:
String s1 = "Hello";
String s2 = "Hey";
String s3 = "Hello";
Map m = new HashMap();
m.put(s1, 1); // Here it computes the hashcode of s1 (lets say h1 ) and cached
m.put(s2, 2); // Here it computes the hashcode of s2 (lets say h2) and cached
now as per my understanding of your statement, if we try to do m.put(s3,3) it will not compute the hash code again. Instead, it will get it (h1) from "hashcode cache" as s1 and s3 are equal.
My question is how does it know that the hashcode (h1) is of s1/s3?
Will it maintain any map between String and hashcodes so that as s1.equals(s3), h1 is returned.
Please clarify me if I am interpreting it wrong,
avinash nalam duplicate keys are not allowed
If you dont call the intern method, simply if you call the hashcode function for S1 ="Hello" and S3 = new String("Hello"), it will have the same hashcode value but '==' equal method returns false. Does it mean internally they are same ? and intern is used to just have the equality of the object?
Thanks for this video. I had a question, given strings are cached in string pool I am correct in saying that those strings will not be garbage collected? Some people mention that only string literals and strings which are interned are cached in string pool is that true. Say String sFirstName = objUser.getFirstName() will the value of sFirstName be cached or not ?
Thank you.
how to ignore the cases (lower and upper) of string in pattern
Please start making videos again, on spring, spring boot.