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Reg: Running Swing in Browser

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posted 15 years ago

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hi,
i have a swing application. I wanted to run it in a browser i have firefox. i have the following import statements in my java code. I have only used the swing components in the application.

and the code of html file generated by the html converter is.

i have also installed j2see sdk ver 1.4. but my browser still shows an dialogue displaying unknownplugin (application/x-java-applet;jpi-version=1.3.0_01).

please any body help me regarding this issue

Thanks and Regards in Advance

Maneesh Godbole

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posted 15 years ago

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Moving to a more appropriate forum.

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Ulf Dittmer

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posted 15 years ago

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I recommend using an APPLET tag, not EMBED or OBJECT. Those introduce a number of complications without offering commensurate benefits.

adeeb alexander

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posted 15 years ago

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ok when i used the applet tag in this way

i am able to see just a plain box and a cross mark at the top
when i checked the java console i can see this

Ulf Dittmer

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posted 15 years ago

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What is "ButtonDemo"? Does it extend Applet or JApplet? In the code you posted earlier the applet class was named "login".

adeeb alexander

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posted 15 years ago

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Actually the login is the slightly complex application. So i was experimenting on the simple ButtonDemo class. But this ButtonDemo already extends JPanel.
Here's the code

import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
import java.applet.Applet;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.net.*;

public class ButtonDemo extends JPanel
                        implements ActionListener {
    protected JButton b1, b2, b3;
    
    public ButtonDemo() {
        ImageIcon leftButtonIcon = createImageIcon("images/right.gif");
        ImageIcon middleButtonIcon = createImageIcon("images/middle.gif");
        ImageIcon rightButtonIcon = createImageIcon("images/left.gif");

b1 = new JButton("Disable middle button", leftButtonIcon);
        b1.setVerticalTextPosition(AbstractButton.CENTER);
        b1.setHorizontalTextPosition(AbstractButton.LEADING); 
        b1.setMnemonic(KeyEvent.VK_D);
        b1.setActionCommand("disable");

b2 = new JButton("Middle button", middleButtonIcon);
        b2.setVerticalTextPosition(AbstractButton.BOTTOM);
        b2.setHorizontalTextPosition(AbstractButton.CENTER);
        b2.setMnemonic(KeyEvent.VK_M);

b3 = new JButton("Enable middle button", rightButtonIcon);
        
        b3.setMnemonic(KeyEvent.VK_E);
        b3.setActionCommand("enable");
        b3.setEnabled(false);

b1.addActionListener(this);
        b3.addActionListener(this);

b1.setToolTipText("Click this button to disable the middle button.");
        b2.setToolTipText("This middle button does nothing when you click it.");
        b3.setToolTipText("Click this button to enable the middle button.");

add(b1);
        add(b2);
        add(b3);
    }
    public void actionPerformed(ActionEvent e) {
        if ("disable".equals(e.getActionCommand())) {
            b2.setEnabled(false);
            b1.setEnabled(false);
            b3.setEnabled(true);
        } else {
            b2.setEnabled(true);
            b1.setEnabled(true);
            b3.setEnabled(false);
        }
    }

protected static ImageIcon createImageIcon(String path) {
        java.net.URL imgURL = ButtonDemo.class.getResource(path);
        if (imgURL != null) {
            return new ImageIcon(imgURL);
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }
    private static void createAndShowGUI() {

JFrame frame = new JFrame("ButtonDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ButtonDemo newContentPane = new ButtonDemo();
        newContentPane.setOpaque(true); 
        frame.setContentPane(newContentPane);

frame.pack();
        frame.setVisible(true);
    }

public static void main(String[] args) {
      javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI(); 
            }
        });
    }
}

Ulf Dittmer

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posted 15 years ago

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In that case you could write a little wrapper class that extends JApplet, and to the content pane of which you'd add the ButtonDemo object.

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