String pool in Java SE 8

[Nayan Das]

Are string objects in string pool garbage collected?

[praveen kumaar]

In short No.please have a look in this →thread.

KindRegards,
Praveen.

[Paul Clapham]

I believe there are some times where Strings in the string pool can be garbage collected -- one being when the string literals are in a class which was loaded by a classloader other than the system classloader, and that class becomes unreferenced. That also requires the classloader to become unreferenced as well, I believe. My description may be wrong in some details (I wouldn't be surprised at all) but I'm pretty sure that's a situation which isn't covered by the OCAJP exam. In fact I suspect the OP's question is also one which wouldn't be asked on the OCAJP either, but somebody who knew more about the exam (of which there are many here) could clarify that.

[praveen kumaar]

Paul,you are correct(their can be the situation when String in a constant pool can be garbage collected,String is not an exception! in contrast to other objects).The link i have provided in my previous post contains the information regarding this point.however as far as OCAJP is concerned you are totally correct that these things are beyond the scope of the exam.

Kind Regards,
Praveen.

[Paul Clapham]

praveen kumaar wrote:these things are beyond the scope of the exam.

Well, I'm glad to have that confirmed. People spend too much time agonizing over trivia like this.

[Nayan Das]

Thank u. I feared that it is a must-know topic for OCAJP exam.

[praveen kumaar]

Nayan wrote:I feared...

You should not be.
I appreciate that you had ask about things where you feel some confusion and that is a very good habit for a perfect learning.
Though,the topic "Garbage collection" is present there in the OCAJP exam topics but specifically about your question things like classloader,as Paul has already mentioned,is beyond the scope of this exam so you can just stop worrying(or getting feared) about these things.
here→you can have a quick look at the Exam Topics.

Kind regards,
Praveen.

[Mala Gupta]

Its obvious that you get curious with such combination (Garbage collection & String pool), even though it isn't covered in the OCA Java SE 7/8 Programmer I & II exams.

I have created a series of blog posts on String pool (limiting its coverage to the exam):

http://www.ejavaguru.com/blog/

You can also access 15 free sample questions on String pool using this link: http://www.ejavaguru.com/freeresources/strpool/strpoolQ1.html

Thanks.

With much respect,
Mala

[Nayan Das]

Thank you very much Praveen Kumar. My worry is gone now.
And also thank you for your resources Mala Gupta. It was great.