ModifyModelSampleModelAction.java Source code

Introduction

Here is the source code for ModifyModelSampleModelAction.java

Source

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

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;

public class ModifyModelSampleModelAction {
    static String labels[] = { "A", "B", "C", "D", "E", "F", "G" };

    public static void main(String args[]) {
        JFrame frame = new JFrame("Modifying Model");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // Fill model
        final DefaultListModel model = new DefaultListModel();
        for (int i = 0, n = labels.length; i < n; i++) {
            model.addElement(labels[i]);
        }
        JList jlist = new JList(model);
        JScrollPane scrollPane1 = new JScrollPane(jlist);
        frame.add(scrollPane1, BorderLayout.CENTER);

        JButton jb = new JButton("add F");

        jb.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent actionEvent) {
                model.add(0, "First");
                model.clear();
                model.addElement("Last");
                model.addElement("Last");
                model.addElement("Last");
                model.addElement("Last");

                int size = model.getSize();
                model.insertElementAt("Middle", size / 2);
                model.set(0, "New First");
                model.setElementAt("New Last", size - 1);

                model.remove(0);
                // model.removeAllElements();
                //    model.removeElement("Last");
                //      model.removeElementAt(size / 2);
                //        model.removeRange(0, size / 2);
            }
        });

        frame.add(jb, BorderLayout.SOUTH);

        frame.setSize(640, 300);
        frame.setVisible(true);
    }
}