Java programs not showing

MrPickle · #1 (**permalink**) 06-04-2008, 09:09 AM

I am trying to test out Java but for some reason, my applets won't show in the web page and I don't know why.

Here's the code:

PHP Code:

  import java.applet.*;
import java.awt.*;

public class SampleApplet extends Applet implements Runnable
{
    int PosX = 10;
    int PosY = 10;
    int Radius = 20;
    
    public void Init(){
        setBackground(Color.blue);
    }

    public void Start(){
        final Thread th = new Thread(this);
        th.start();
    }

    public void Stop(){ }

    public void Destroy(){ }

    public void run(){
        Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
        while(true)
        {
            PosX++;
            repaint();
            try
            {
                Thread.sleep(20);
            }
            catch (final InterruptedException ex)
            {
            
            }
            Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
        } 
    }

    public void Paint(Graphics g){
        g.setColor(Color.white);
        g.fillRect(0, 0, 200, 100);
        g.setColor(Color.black);
        g.drawString("Sample Applet", 20, 20);
        g.setColor(Color.blue);        
    }
}

Here's the html code:

HTML Code:

<html> <body> <p><applet code = "SampleApplet.class" width = "500"  height = "500" /></p> </body> </html>

HelloWorld · #2 (**permalink**) 06-04-2008, 01:14 PM

Is there exception? Sorry, I never done any Java applet programming..

MrPickle · #3 (**permalink**) 06-04-2008, 01:17 PM

Eclipse says:

Quote:

Exception in thread "main" java.lang.NoClassDefFoundError: sun.applet.AppletViewer
at gnu.java.lang.MainThread.run(libgcj.so.81)
Caused by: java.lang.ClassNotFoundException: sun.applet.AppletViewer not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/james/Desktop/Scripts/Java/Game/], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.81)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj .so.81)
at java.lang.ClassLoader.loadClass(libgcj.so.81)
at java.lang.ClassLoader.loadClass(libgcj.so.81)
at gnu.java.lang.MainThread.run(libgcj.so.81)

HelloWorld · #4 (**permalink**) 06-04-2008, 01:22 PM

I'm not familiar with applet programming, I never done it, but I suggest you to start with the easier sample first.. here's a good official tutorial from Sun:

Getting Started with Applets (The Java™ Tutorials > Deployment > Applets)

The link will get you to the Hello World program for Java applet

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