This week's book giveaway is in the Java in General forum.
We're giving away four copies of Helidon Revealed: A Practical Guide to Oracle’s Microservices Framework and have Michael Redlich on-line!
See this thread for details.
  • 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 Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Tim Cooke
  • paul wheaton
  • Liutauras Vilda
  • Ron McLeod
Sheriffs:
  • Jeanne Boyarsky
  • Devaka Cooray
  • Paul Clapham
Saloon Keepers:
  • Scott Selikoff
  • Tim Holloway
  • Piet Souris
  • Mikalai Zaikin
  • Frits Walraven
Bartenders:
  • Stephan van Hulst
  • Carey Brown

java.awt.TextField - limiting input size?

 
Ranch Hand
Posts: 401
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Does anyone an AWT solution for how I can limit the input size of my java.awt.TextField so the user cannot enter more than 4 characters?
 
Marshal
Posts: 80097
413
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Just off the top of my head:-

Add some sort of Listener which throws an Exception if getText().length() > 4

???

There must be other things you can do.
 
Bartender
Posts: 11497
19
Android Google Web Toolkit Mac Eclipse IDE Ubuntu Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Originally posted by James Hodgkiss:
Does anyone an AWT solution for how I can limit the input size of my java.awt.TextField so the user cannot enter more than 4 characters?



Take a look at PlainDocument#insertString
 
James Hodgkiss
Ranch Hand
Posts: 401
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Cheers for the replies.

Got it sorted by adding a KeyListener to my TextField and using a conditional e.consume() in my keyTyped(Event e) method.
 
There will be plenty of time to discuss your objections when and if you return. The cargo is this tiny ad:
Smokeless wood heat with a rocket mass heater
https://woodheat.net
reply
    Bookmark Topic Watch Topic
  • New Topic