Great video with easy to understand explanation. I have a question. I checked my hprof heap dump as I thought my application was causing memory leaks, but it turns out most of the memory is consumed by byte, char and Strings which are not from my application. How do I fix or avoid memory leaks in that case? Your response will be highly appreciated. Thanks
Thank you for your support and feedback 😊 For the issue which you are currently facing. As there is no user defined classes which are causing the issue. You need to check the over usage of Strings in your application. Are you doing a lot of String manipulation? In such cases you may need to use StringBuilder/StringBuffer depending on the nature of your application (Single Threaded/Multi Threaded). Also, look for the connection objects and buffers, they must be closed after use. I will recommend to use try-with-resources if you are using Java 1.7 and above.
A static field, by itself, is not a memory leak. It's only a memory leak if memory is allocated but not released when no longer needed. If you need a list of doubles for the lifetime of the program, then keeping the data in a static field is an appropriate design. If at some point in the program execution they are no longer needed, just call List::clear.
Hi thanks for sharing this knowledge. Could you explain if we got static methods not variables. Will it still keep the objects we create inside or passed as org for ever?
I believe objects passed as arguments or created inside static method will get out of scope and ready to be garbage collected as soon as the static method execution is complete.
Correction: in java 9+, do not avoid string concatenation if the whole string is computed on a single operation (i.e. not in a loop), the compiler and runtime know enough for it to be optimal
Why the populate method is not declared static, since it is only using static member? In that case to populate the list we will not need to create the object of the class. And when the list is no longer needed then it could be set to null, to let the garbage collector reclain it. It would not need the unloading of the class in such a case.
Yes you can do it that way also, there should not be any issue. But to test the non static list anyway you have to make the populate method as non static.
@@LazzyProgrammer Agreed, The idea is that whereever a method can be written as static(not dependent on instance), it should be declared static and invoked without using an instance.
Soon to be a correction: the finally block is most of the time replaced by the try-with-resources, and the finally block will be removed in some future java release
Finally, I got to know after many years of experience. Thanks!!!
I am glad that I was helpful 🙂
Superb , thanks a lot.
Thank you so much for your feedback 🙏😊
I thought these topics are only theoretical definition and it can't be visualised. Thanks for sharing your valuable knowledge.
Thank you, I am glad that it was helpful...
one of the best videos which i have came across till date.. please keep up this good work!!
Thank you so much for your feedback 😊
Let's Keep Learning Together !!!!
thanks for sharing the knowledge in such a simple way. You are genious. Keep uploading such useful stuff.
Thank you, I am glad that it was helpful 🙂
Got to learn new thing todays ... Thanks buddy
I am glad 😊 Let's keep learning
Really helpful please come up such interesting knowledgeable videos
Thank you Utkarsh for your valuable feedback 🙂
Excellent explanation with visualization. Very nice tutorial 👌 👍
Thank you Nikunj 😊
Easy to understand.... Very good explanation sir 👍👍
Thank you 😊
Nice explanation
Thank you for your feedback 🙏
Well explained. Thanks for your efforts 🙏
Thank you for your valuable feedback 🙏
very good content thanks a lot and all the very best.
Thank you so much Ashok :)
I learned a lot , thank you ❤
Excellent explanation. Thank you very much!
Thank you for the feedback :)
Explain with perfect example
Thank you 🙏
very informative video on an underrated topic. thank you !!
Thank you for your feedback 🙂 Please do share the videos you like with your community as well. Let's share the knowledge.
@@LazzyProgrammer sure
Great explaination and it's very helpful
Thank you Durga I am glad it was helpful...
Worth watching the video. Thank you ^_^.
Glad you enjoyed it!
Amazing. Thank you so much.
I am glad that it was helpful 🙂
Great video with easy to understand explanation. I have a question. I checked my hprof heap dump as I thought my application was causing memory leaks, but it turns out most of the memory is consumed by byte, char and Strings which are not from my application. How do I fix or avoid memory leaks in that case? Your response will be highly appreciated. Thanks
Thank you for your support and feedback 😊
For the issue which you are currently facing. As there is no user defined classes which are causing the issue. You need to check the over usage of Strings in your application. Are you doing a lot of String manipulation? In such cases you may need to use StringBuilder/StringBuffer depending on the nature of your application (Single Threaded/Multi Threaded). Also, look for the connection objects and buffers, they must be closed after use. I will recommend to use try-with-resources if you are using Java 1.7 and above.
A static field, by itself, is not a memory leak. It's only a memory leak if memory is allocated but not released when no longer needed. If you need a list of doubles for the lifetime of the program, then keeping the data in a static field is an appropriate design. If at some point in the program execution they are no longer needed, just call List::clear.
Correct, it's about how we use it
Great Sir! keep sharing such awesome tutorials.
Thank you Sohail 🙂
Was helful
Nicely explain. Very useful.
Thank you Poonam, I am glad that it was useful...
super cool!!!
Thank you 😊
Hi thanks for sharing this knowledge. Could you explain if we got static methods not variables. Will it still keep the objects we create inside or passed as org for ever?
I believe objects passed as arguments or created inside static method will get out of scope and ready to be garbage collected as soon as the static method execution is complete.
Correction: in java 9+, do not avoid string concatenation if the whole string is computed on a single operation (i.e. not in a loop), the compiler and runtime know enough for it to be optimal
Why the populate method is not declared static, since it is only using static member?
In that case to populate the list we will not need to create the object of the class.
And when the list is no longer needed then it could be set to null, to let the garbage collector reclain it. It would not need the unloading of the class in such a case.
Yes you can do it that way also, there should not be any issue. But to test the non static list anyway you have to make the populate method as non static.
@@LazzyProgrammer Agreed, The idea is that whereever a method can be written as static(not dependent on instance), it should be declared static and invoked without using an instance.
Awesome
Thank you Nand Kishor 🙂
how to run it from a MAC os
Hello Yichun,
You can download and install .dmg from visual vm's website for running it on Mac.
This is very useful 👍
I am glad it was useful. Thanks for sharing your valuable feedback 😊
Soon to be a correction: the finally block is most of the time replaced by the try-with-resources, and the finally block will be removed in some future java release