Java JList and actionPerformed problem

mcn2948

I have been given this project to create a java GUI for a cinema, where a user can add a movie, this movie is then inserted into a list.
By click on the items in the list the program retrieves the relevant data about that movie inserting them into the same form used to add a movie
I can add a movie and retrieve a movies details. But once i retrieve the details i cannot add a new movie.

Below is my add movie code

private void addButtonActionPerformed(java.awt.event.ActionEvent evt) {                                          
    resetForm();
    //checking if there is 8 movies in the vector
    if(count<=8){
        
        addButtonEnable();
        addFilm();
        addToList();
        
        resetForm();
        
        count++;
        
    }
    else {
        addButton.setEnabled(false);
        resetForm();
        JOptionPane.showMessageDialog(this, "You have entered 8 movies, you can't enter anymore without deleteing some movie/s");
    }
    
}             

below are some of my method

public void addFilm() {
        //getting text from form
        String strTitle = titleTF.getText();
        Object objStudio = studioDropDown.getSelectedItem();
        ButtonModel age = JToggleButtonGroup.getSelection();
        String strReleaseDate = releaseDateTF.getText();
        String strStaring = starringTF.getText();
        String strDuration = durationTF.getText();
        String strDirector = directorTF.getText();
        String strDescription = description.getText();
        ButtonModel screen = buttonGroup1.getSelection();
        
        //creating an instance of movie
        movie newMovie = new movie();
        
        //setting the values in this instance
        newMovie.setTitle(strTitle);
        newMovie.setStudio(objStudio);
        newMovie.setClassification(age);
        newMovie.setReleaseDate(strReleaseDate);
        newMovie.setStaring(strStaring);
        newMovie.setDuration(strDuration);
        newMovie.setDirector(strDirector);
        newMovie.setSynopsis(strDescription);
        newMovie.setScreen(screen);
        
        //adding movie instance newMovie to vector movie
        movie.add(newMovie);
        
        
    }
    
    public void addToList() {
        //adding to list
        listModel.clear();
        for(int i=0;i<movie.size();i++){
            movie newMov = (movie) movie.get(i);
            listModel.add(i, newMov.getTitle().toString().toUpperCase());
        }
        movieList.setModel(listModel);
    }
    
    public void retrieve() {
        addButtonEnable();
        movie newMov = (movie) movie.get(movieList.getSelectedIndex());
        
        //inserting the data in the textfield
        titleTF.setText(newMov.getTitle());
        studioDropDown.setSelectedItem(newMov.getStudio());
        JToggleButtonGroup.setSelected((ButtonModel) newMov.getClassification(), true);
        releaseDateTF.setText(newMov.getReleaseDate());
        starringTF.setText(newMov.getStaring());
        durationTF.setText(newMov.getDuration());
        directorTF.setText(newMov.getDirector());
        description.setText(newMov.getSynopsis());
        buttonGroup1.setSelected((ButtonModel) newMov.getScreen(), true);
        
        
        
    }
    
    public void removeMovie(int index) {
        movieList.remove(index);
        movie.remove(index);
        
    }

Below is the code for remove, i have just started this so it is not very good

private void deleteButtonActionPerformed(java.awt.event.ActionEvent evt) {                                             
        removeMovie(movieList.getSelectedIndex());
        addFilm();
 }

As I have said i need help with adding a new movie after i have retrieved another movie, also i need ideas for removing a movie from the list.