Not executed method

Question

Hi. I need some help. That's a snippet of the class.
public constructor ( ChooserListener callback ) {  // that's a constructor
super();
Loader.load();
this.callback= callback;
JFrame frame = new JFrame();
frame.getContentPane();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(this);
frame.setSize(300,330);
frame.setVisible(true);
JPanel lectures = new JPanel();
String items [] ={BLANK,COMP,EIMC,MATH};
JList list = new JList(items);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.addListSelectionListener( listSelectionListener);
lectures.add(list);
ListSelectionListener listSelectionListener = new ListSelectionListener() {
public void valueChanged (ListSelectionEvent e)
{    // System.out.println(  listSelectionListener);
System.out.println("Hooray");
if (e.getValueIsAdjusting()== false)
// tell(dept[deptList.getSelectedIndex()]);
tell(COMP);
} // the end of class
I can't understand why System.out.println("Hooray"); is not executed. Why execution bypasses that 'valueChanged' method. What's the problem?
Cheers

Answer 1

mvezelis wrote:
What do you mean, “use code tags”? I am new here.When you make your post, you'll see some formatting options above the text input box.
When you post code, highlight it, and then click the button that says "CODE".
That way your code will be legible.
What do you mean, I change the list?I don't know what he was referring to, but I don't see any place where you actually add the listSelectionListener to anything. If that's the case then the code in question would never get executed. Do you understand why?