String pool memory

Question

I am only aware of two kinds of memory stack and heap.Is string pool memory some different kind of memory?If not then why is it given a separate name?

Answer 1

String pool is a memory area within the heap memory area only i.e. it is not any other kind of memory area...

String object when created using double quotes, jvm first check for the string in pool and if the string already exits, then same reference is given to the object and if no string is found in pool then new string is added to the pool and reference of this is given.

In other case, when we create a string object with new operator, then in this case JVM creates a new string object in the Heap itself instead of searching for the string in the pool.

Answer 2

Thanks Tarika for your answer

Answer 3

Thanks a lot Jain Rishav Amit for your elaborate explanation👍

Answer 4

Yeeaah, String subject. To really understand it, use some IDE and a debugger, put a breakpoint and compare different scenarios. It is worth more than any lesson read. EDIT: please use Mission Control too

Answer 5

It is a java performance tool, highly recommend it for You to test and play with it. A lot of tutorials are telling how things work, but I believe it is better to "see" memory address and think for a while why and how it is done internally

Answer 6

Thanks for the info Jakub Dubański
Sounds interesting..
I will be looking forward to use it..

Answer 7

also you can use method hashCode( ) to see how two String refer to each other if there content are same .
i.e

Answer 8

thankq Jain rishav amit

Answer 9

Jakub Dubański
I am not aware about Mission control... whats that?

Answer 10

as far as i know objects are store in a heap and variables are in stack, 1/3 rd of heap memory is reserved for string literal pool.

Answer 11

im want lern writ📝 Ap java but littel langoech english and no univer sit student im hom mayker and iron im help

Answer 12

👌👌👉

Answer 13

thanks for ur answer

Answer 14

Ok

Answer 15

Hi

Answer 16

Hello
Where are you from???