Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class Main {
    private String[] elements = { "Monday", "Tueday", "Wednesday" };
    private JList made_list = new JList();

    public Main() {
        made_list.setModel(new DefaultListModel());
        for (String element : elements) {
            ((DefaultListModel) made_list.getModel()).addElement(element);
        }

        JButton removeItemBtn = new JButton("Remove Item");
        removeItemBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                removeActionPerformed(e);
            }
        });

        JPanel panel = new JPanel();
        panel.add(new JScrollPane(made_list));
        panel.add(removeItemBtn);

        JOptionPane.showMessageDialog(null, panel);
    }

    private void removeActionPerformed(ActionEvent e) {
        System.out.println("made_list's model: " + made_list.getModel());
        System.out.println("Model from a fresh JList: " + new JList().getModel());
        DefaultListModel model = (DefaultListModel) made_list.getModel();
        if (model.size() > 0) {
            model.remove(0);
        }
    }

    public static void main(String[] args) {
        new Main();
    }
}