How could i fix that error?

Question

hii everybody. i tried to write codes for save , delete , and edit, i wrote all the codes but the codes editting button gives an error.I am going to show you the
codes and i hope you tell me where is the mistake in the edit button.
The codes for save Jbutton, they work properly
protected void save() {
String s=txt.getText();
String x=txtArea.getText();
gui.CatagoryEditorInt cata=new CatagoryEditorInt(s,x);The codes for delete Jbutton and also they work without errors
protected void Delete() {
ProductDA s = new ProductDA();
s.getAll().remove(jlst.getSelectedIndex());
int j=JOptionPane.showConfirmDialog(null, "Are you sure? "+ " ",getTitle(),JOptionPane.YES_NO_OPTION);
if(j==JOptionPane.YES_OPTION);The codes for edit Jbutton, here was the problem, the codes didn't edit the text,
CatagoryDA s = new CatagoryDA();
s.getAll().add(jlst.getSelectedIndex());
String w=CatagoryEditor.txt.getText();
String z=CatagoryEditor.txtArea.getText();
CatagoryEditorInt d=new CatagoryEditorInt(w,z);
(jlst.getSelectedValue());
(jlst.getSelectedValue());Tell me why the edit code doesn't work?
Thanks in advance

Answer 1

Please provide details of the error.
For example, if your compilation fails the compiler will emit error messages. Paste these into the forums.
If you have a runtime error message you may still have error messages; if so paste these in.
If your program fails at runtime but without error messages you will need to provide:
1. A description of the actual behaviour of your program.
2. A description of the expected behaviour of your program.
3. An explanation of why you believe that (1) is incorrect.
Please also read the following link before posting further threads:
[http://www.catb.org/~esr/faqs/smart-questions.html|http://www.catb.org/~esr/faqs/smart-questions.html]