Re: Memory & Pixel Usage Etc: As Number of JTable Rows & Columns
Increases
On 6/12/13 5:11 AM, Haircuts Are Important wrote:
On Jun 12, 2:35 am, clusard...@aol.com wrote:
On Tuesday, June 11, 2013 6:56:49 PM UTC-4, Knute Johnson wrote:
On 6/11/2013 12:42 PM, Haircuts Are Important wrote: > How much
memory does a JTable use as the number of rows and columns in >
increases. > > How can I measure memory useage and number of pixels
used by a JTable. > > Thank you, > As to memory I have no idea but
I am curious why it matters. Most modern computers have a boat load
of memory and virtual memory. As for pixels, you can create it,
display it on a JPanel, pack it and ask it how big it is. -- Knute
Johnson
It matters to me because of overall efficiency questions. Basically, if I have many other programs running or computationally intense prgrams running at the same time will my new java project slow all these programs down if it has many rows and columns. Can I improve the effiency more by restricting my new project to only a few rows and columns.
Thanks,
Does java have something like the old "sizeof" function in the
language C.
No.
The JTable itself won't add a lot of extra memory usage, most of the
usage will likely come from your data itself.
Even if you had sizeof, the best way to determine the actual efficiency
of a program is by testing and profiling.
If you're thinking on the scale of a few hundred, I wouldn't even worry
about it. tens of thousands I'd start to get a little concerned, but
I'd test first.
No easy answer, you just gotta fill your data structure and see what
happens.