JRadioButton actionListener shows troble.plz help.

Question

hai forum,
My project has a part where i select a class file,display its methods and then display JTextFields for the parameters of the method in a separate panel.
My problem is that clicking different radio buttons(methods) do not bring about a change in the panel.
my code for selecting and displaying method is
        public void selectClass_actionPerformed(ActionEvent e)
            if(e.getSource()==selectClass)
                //refresh panel
                methodPanel.removeAll();
                methodPanel.revalidate();
                //  Code To Generate a FileChooser
                 //instantiate class FilterClass
                JFileChooser jfilechooser=new JFileChooser();
                Filterclass filter=new Filterclass();
                //Set selection mode for file chooser
                jfilechooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
                //set file filter
                jfilechooser.setFileFilter(filter);
                int returnVal = jfilechooser.showOpenDialog(this);
                if(returnVal == JFileChooser.APPROVE_OPTION)
                    try
                            String str = jfilechooser.getSelectedFile().getName();
                            String parent=jfilechooser.getSelectedFile().getParent();
                            classFileList.addItem(str);
                            classFileList.disable();
                            // Create a File object on the root of the directory containing the class file
                            File file = new File(parent);
                            // Convert File to a URL
                            URL url = file.toURL();         
                            URL[] urls = new URL[]{url};
                            // Create a new class loader with the directory
                            ClassLoader cl = new URLClassLoader(urls);
                            StringTokenizer st = new StringTokenizer(str,".");
                            String s = st.nextToken ();
                             Class c = cl.loadClass(s);
                            //Get the Methods Of the Selected Path
                            Method methods[]=c.getDeclaredMethods();
                            for(int i=0;i<methods.length;i++)
                                int modifiers=methods.getModifiers();
if(Modifier.isPublic(modifiers)||Modifier.isStatic(modifiers))
String a= "";
a=methods[i].getName();
//Get the Parameters
Class[] parameterTypes=methods[i].getParameterTypes();
String parameterString = "";
for(int k=0;k<parameterTypes.length;k++)
if(k==0)
parameterString = parameterTypes[k].getName();
else
parameterString = parameterString+","+parameterTypes[k].getName();
parameterCount = parameterTypes.length;
System.out.println("num of para"+parameterCount);
/*Create RadioButton Dynamically*/
String radioName=a+"("+parameterString+")";
j=new JRadioButton(radioName);
methodPanel.add(j,true);
methodlistPane.getViewport().add(methodPanel,null);
j.setBounds(100,(100+(i*50)),100,50);
group.add(j);
//Class methodradioactionlistener implemented below
j.addActionListener(new MethodRadioActionListener());
}//end of if loop
}//end of for loop
}//end of try loop
catch(Exception e1)
StringWriter sw = new StringWriter();
e1.printStackTrace(new PrintWriter(sw));
String stacktrace = sw.toString();
System.out.println("stacktrace = " + stacktrace);
}//end of catch loop
}//end of if loop
}//end of e.getsource loop
}//end of method loop
And my MethodRadioActionListener is
        private class MethodRadioActionListener implements ActionListener
            public void actionPerformed(ActionEvent e1)
                    if(parameterCount==0)
                        textfieldPanel.removeAll();
                        textfieldPanel.repaint(); 
                        JLabel nopara = new JLabel();
                        nopara.setText("NULL PARAMETER");
                        nopara.setBounds(new Rectangle(210, 80, 175, 25));
                        textfieldPanel.add(nopara);
                        textFieldPane.getViewport().add(textfieldPanel,null);
                    } //END OF IF LOOP
                    else if(parameterCount>0)
                        textfieldPanel.removeAll();
                        textfieldPanel.repaint();
                        tf = new JTextField[parameterCount];
                        for(int j = 0; j < tf.length; j++)
                            //DISPLAYS TEXT FIELDS
                            tf[j] =new JTextField(null,5);
                            textfieldPanel.add(tf[j],true);
                            tf[j].setBounds((100+(j*100)),100,100,10);
                            textFieldPane.getViewport().add(textfieldPanel,null);
                        } //END OF FOR LOOP
                    } //END OF ELSE IF LOOP
            } //END OF ACTION PERFORMED METHOD
         } //END OF CLASS
         Clicking the radio button do not bring about any change.A single textfield is generated always.
Plz help me fix my mistake.
Thank you.

Answer 1

Yes, as you mentioned only one action is being done that is of the last method.I tried bringing the code ,ParameterCount=k; ,inside for loop so that it takes thenumber of parameters of only one method that i select.But still i find the same kind of action takes place.
Is there any other way out to solve my problem?How can i get the parameterCount of only one single method?
Is it advisable to write the radioButton actionPerformed method inside the actionPerformed method for selectClass menuItem, rather than as a separate class.
Thank you