When data will be removed from memory in the loop

[worthy breach]

So if I have loop like this

while (scanner.hasNextLine()) {
       String line = scanner.nextLine();
       String[] parts = line.split(",");
       if (parts.length >= 9) {
           String equipmentDescr = parts[0];

        ...
}

will at X + 1 iteration data that was stored in X iteration be erased, like it will not be in the memory? For example what was stored in line or equipmentDescr at X iteration, will it be still at memory at X + 1 iteration?

So I am doing work of getting data from CSV file and saving it to database, I first did saved data from CSV file into objects at for that I needed 700mb. I thought that if I do not save data into objects but insert data into database as I loop I will save up on memory, but I did not, so I guess for instance what was stored in X iteration at line or parts will not be completely erased at memory at X + 1 or X + 2 iteration

[upper oak]

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[upper oak]

While you are waiting for getting help, here are some tips to improve your experience:

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[rich bluff]

Variables may get deleted when you exit the scope, but I doubt this really matter for you

[worthy breach]

What do you mean by exiting schope, do you mean when while loop will totally end, not just particular iteration?

[rich bluff]

Any iteration

[worthy breach]

Weird that then I didn't save up on memory

[rich bluff]

But I doubt this will matter for you

[worthy breach]

Why you doubt that?

[rich bluff]

Since what are you doing of those variables ?

[worthy breach]

I am passing them to method from which I call another custom query method for inserting data to database

[rich bluff]

Show the whole code please

[worthy breach]

I can't do that because of firm policy but what is your idea?

It is not like I am adding that data into constructor and using created objects for some time, I just pass data to method which calls custom JpaRepository query for insertion

[rich bluff]

If you don't store the objects somewhere, they will be GC'd at some point

[worthy breach]

Yeah, so as my other way of not saving objects is not less expensive than former, then I guess objects are GC'd later on

Not almost immediately when particular iteration from which data was created is over