Re: Action Listeners for JTextFields

From:
"Andrew Thompson" <u32984@uwe>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 15 Oct 2007 14:19:04 GMT
Message-ID:
<79bb08b464a09@uwe>
George wrote:
...

...this gives me the error message that jtf can not be resolved.


Odd you should say that. That is *not* the error I
am getting here, for *this* version of the code.

<sscce>
import java.awt.event.*;
import javax.swing.*;

class Test extends JFrame implements ActionListener {

  Test() {
    JPanel p1 = new JPanel();
    JTextField jtf = new JTextField();
    p1.add(jtf);
    this.add(p1);
    JButton jb = new JButton("Click Me!");
    this.add(jb);
    jb.addActionListener(this);
  }

  /** The action listener is implemented as follows */
  public void actionPerformed(ActionEvent e){
    System.out.println(jtf.getText());
  }
}
</sscce>

D:\Test.java:18: cannot find symbol
symbol : variable jtf
location: class Test
        System.out.println(jtf.getText());

Why does it report "jtf can not be resolved", where
you are?

BTW. Note that I posted an SSCCE*. An SSCCE
helps to explain a problem to people, far better than
code snippets. Please consider posting SSCCE's,
rather than code snippets, in future.

* <http://www.physci.org/codes/sscce.html>

I look forward to hearing from you soon.


This is usenet. It is not uncommon to wait 72 hours
before getting a reply - or no reply at all.

--
Andrew Thompson
http://www.athompson.info/andrew/

Message posted via http://www.javakb.com

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