CODEWITHSUNDEEP
javaswingjbuttonactionlistener
user3342634
user3342634

Reputation: 11

while implementing actionlister in java eclipe ide

My Code is:

JButton btnNewButton = new JButton("ok"); //JButton btnNewButton = new JButton("Ok");

btnNewButton.addActionListener(new ActionListener() 

{
    public void actionPerformed(ActionEvent arg0) {

        if(arg0.getSource().equals(btnNewButton))
        {

        }
}

when i wrote this still getting error. if(arg0.getSource().equals(btnNewButton)) getting error please any one fix it

Upvotes: 0

Views: 80

Answers (2)

Engineer
Engineer

Reputation: 1436

try this code

JButton btnNewButton = new JButton("ok"); //JButton btnNewButton = new JButton("Ok");

btnNewButton.addActionListener(this); 


    public void actionPerformed(ActionEvent ae) {

        if(ae.getSource().equals(btnNewButton))
        {
     ////do your code here 
        }

Upvotes: 1

kiheru
kiheru

Reputation: 6618

Anonymous internal classes can't access local variables, unless they have been declared final. Changing the declaration of btnNewButton to final JButton btnNewButton = ..." would make it work.

However, since you are using an anonymous listener that is attached to nothing else but btnNewButton, you already know the event source must be btnNewButton, and the whole check is redundant.

Upvotes: 6

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