MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URL;

import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;

public class MainClass extends JFrame {
    protected JEditorPane mEditorPane;

    protected JTextField mURLField;

    public MainClass() {
        super();
        JToolBar urlToolBar = new JToolBar();
        mURLField = new JTextField(40);
        urlToolBar.add(new JLabel("Location:"));
        urlToolBar.add(mURLField);
        frame.add(urlToolBar, BorderLayout.NORTH);

        mEditorPane = new JEditorPane();
        mEditorPane.setEditable(false);
        frame.add(new JScrollPane(mEditorPane), BorderLayout.CENTER);

        openURL("http://www.java2s.com");

        mURLField.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                openURL(ae.getActionCommand());
            }
        });

        mEditorPane.addHyperlinkListener(new LinkActivator());

        setSize(500, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    protected void openURL(String urlString) {
        try {
            URL url = new URL(urlString);
            mEditorPane.setPage(url);
            mURLField.setText(url.toExternalForm());
        } catch (Exception e) {
            System.out.println("Couldn't open " + urlString + ":" + e);
        }
    }

    class LinkActivator implements HyperlinkListener {
        public void hyperlinkUpdate(HyperlinkEvent he) {
            HyperlinkEvent.EventType type = he.getEventType();
            if (type == HyperlinkEvent.EventType.ACTIVATED)
                openURL(he.getURL().toExternalForm());
        }
    }

    public static void main(String[] args) {
        new MainClass().setVisible(true);
    }
}