Win a copy of TensorFlow 2.0 in Action this week in the Artificial Intelligence and Machine Learning forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Paul Clapham
  • Bear Bibeault
  • Jeanne Boyarsky
Sheriffs:
  • Ron McLeod
  • Tim Cooke
  • Devaka Cooray
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Jj Roberts
  • Stephan van Hulst
  • Carey Brown
Bartenders:
  • salvin francis
  • Scott Selikoff
  • fred rosenberger

JTextPane and handling insertions of a large string.

 
Ranch Hand
Posts: 55
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I'm having a difficult time trying to optimize the adding of a large file to a JTextPane. I have searched everywhere on the internet and cannot seem to find anything that looks feasible. One site mentions removing the JTextPane's document while insertions are being done to avoid any unnecessary updates. I tried this but it did not seem to help much.

What I'm thinking of doing is creating the zone model where i load a chunk of the data and listen for the user to reach the end of the scrollbar. At that point I add another chunk to the pane.

I have that functionality working fine. However, I would like to make the insertion of text much more efficient. Anyone have any tips how to speed things up?

- I grab text from file and put into a string > mb - this is fine

- I then call pane.settext(string) -> this is where things really hang.
 
Sheriff
Posts: 22024
108
Eclipse IDE Spring VI Editor Chrome Java Ubuntu Windows
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Perhaps you can import the file in smaller chunks, using a SwingWorker:
This example reads the file line by line. Perhaps you can read pieces of X characters, having X some kind of constant that's large but not too large.

By using a SwingWorker like this you will not have one large update to the document but several smaller ones. The effect should be a somewhat more responsive user interface.
 
Let's go to the waterfront with this tiny ad:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton
reply
    Bookmark Topic Watch Topic
  • New Topic