This week's book giveaway is in the Java in General forum.
We're giving away four copies of Think Java: How to Think Like a Computer Scientist and have Allen B. Downey & Chris Mayfield on-line!
See this thread for details.
Win a copy of Think Java: How to Think Like a Computer Scientist this week in the Java in General forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

how to refer to JLabels as strings

 
Babis Papadopoulos
Greenhorn
Posts: 17
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I want to make a method that set images in labels.. this method I will call many times in my program .. My prloblem is how I make something like this:

(Ofcourse this isn't work...)
for not writing a screed like this:


because I want for example 20 JLabel...and you understand that will become very large
 
Matthew Brown
Bartender
Posts: 4567
8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You can't have variable names that are dynamically created like that, but you can use a collection. For example, you could create a Map<String, JLabel> and add your labels to that. Then you can refer to individual labels using the String you used as a key, or you can easily iterate across all of them.
 
Babis Papadopoulos
Greenhorn
Posts: 17
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Thanks for your reply.. It is a help..


Therefore there is no way to create you #(a given number from user) labels, right?
 
Matthew Brown
Bartender
Posts: 4567
8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Oh, creating a given number isn't a problem - you just do it in a loop like your first example. But instead of assigning to a different variable every time, you put them in a collection that you've already created.
 
Babis Papadopoulos
Greenhorn
Posts: 17
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Yeah!! Thanks again!
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic