Solved

Pass variable to ActionListener

Posted on 2004-04-30
7
954 Views
Last Modified: 2008-03-06
hi all.   I need to pass a variable from a button that is clicked to the ActionListener.   Here's what I have:

this.viewButton[i].addActionListener(new viewAction(timeID.get(i).toString()));  //the button


//the action Listener inner class

    public class viewAction implements ActionListener{
        public viewAction(String id){
        }

        public void actionPerformed(ActionEvent e) {
            System.out.println("I'm clicked");
        }

    }


i just can't figure out how to get a 'String' into my ActionListener class.

Thanks.
0
Comment
Question by:calvinklein1
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
7 Comments
 

Author Comment

by:calvinklein1
ID: 10959916
sorry.  i should have stated that  'timeID' is an array that stores an 'Id' for each button in my panel.  So when the button gets click I want to grab the right 'Id' in my array and pass that to my 'ActionListener' class.   Just in case that was confusing.   If you want me to post the whole code I will.  It's just long and I wanted to keep this short.  Just let me know.  Thanks!
0
 
LVL 37

Expert Comment

by:zzynx
ID: 10959945
>>i just can't figure out how to get a 'String' into my ActionListener class.

you have a constructor that takes a String as parameter, so????

Don't understand
0
 
LVL 9

Accepted Solution

by:
mmuruganandam earned 150 total points
ID: 10959967
public class viewAction implements ActionListener{
    String actionId; // member variable of action class
        public viewAction(String id){
              actionId = id; // <<<<< store the passed value
        }

        public void actionPerformed(ActionEvent e) {
            System.out.println("I'm clicked : ");
            System.out.println("Given id is: " + actionId); // <<<<<
        }
    }


Regards,
Muruga
0
Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

 
LVL 37

Assisted Solution

by:zzynx
zzynx earned 100 total points
ID: 10959968
Oh, I see:

public class viewAction implements ActionListener{
        private String theId = null;            /// <<<<<<<<<<<<<<<

        public viewAction(String id){
           theId = id;      // <<<<<<<<<<<<<<<<<<<<<
        }

        public void actionPerformed(ActionEvent e) {
       
            System.out.println("I'm clicked: Id=", theId);  // <<<<<<<<<<<
        }

    }
0
 
LVL 37

Expert Comment

by:zzynx
ID: 10959978
You see: I'm right. :)
0
 

Author Comment

by:calvinklein1
ID: 10960042
I thought I tried this and it didn't work.  but oh well.  my bad.  thanks for getting me back on track.   lol
0
 
LVL 37

Expert Comment

by:zzynx
ID: 10960068
Thanks for accepting.
This keeps us answering your future questions too.
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Suggested Courses

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question