Welcome to the Java Programming Forums
The professional, friendly Java community. 21,500 members and growing!
The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.
>> REGISTER NOW TO START POSTING
Members have full access to the forums. Advertisements are removed for registered users.
LinkBack URL
About LinkBacks
button update when clicked
Hello java programmers!
I am going to ask a simple question (doesn't seem that simple to me though). I want to make a button change its text whenever clicked and i want that to be immediately shown in my GUI. I have my button and the listener class up and running. It's just this bit that i don't know how to do.
Thanks in advance.
P.S. if you feel like posting some code that would be greatly appreciated!
Related threads:
Re: button update when clicked
Please post some code which demonstrates what you have done so far. It sounds like you are close to getting what you want, but without code its tough to judge. For what its worth, see the API for JButton for methods on how to set its text.
Re: button update when clicked
This is the original button
JButton b00 = new JButton(" "); ActionListener ac = new Counter(b00); b00.addActionListener(new Counter(b00)); panelGrid.add(b00);
And this is the listener class.
public class Counter implements ActionListener { private int count; private JButton button; public Counter(JButton b) { button = b; } public void actionPerformed(ActionEvent e) { count++; if (count > 5) { count = 0; } button = new JButton(""+count); System.out.println("CLICKED "+count+" TIMES"); } }
I am aware that it actually creates a new button with the count value as text but i don't see how can i replace the b00 button with 'button' button.
Re: button update when clicked
Has to do with references and what the reference points to at the time you create your GUI. Same thing as the followingbut i don't see how can i replace the b00 button with 'button' button.
String test1 = "test1"; String test2 = test1; test1 = "test3"; System.out.println(test1); System.out.println(test2);
Prints
because you've re-assigned the reference, and previous references still point to the original. As I mentioned in my previous post, get familiar with the API, and the fix to your problem is to use the setText function of JButton (see JButton (Java Platform SE 6) )test3 test1
Re: button update when clicked
thank you for your time. You helped me a lot
Reply With Quote