Applet not loading due to IOException

[bamboat_3]

Dear Gurus,

I have build applet – Servlet application by using Swing components, JDK1.5 update 11 and MySql database at backhand.

The problem is that, my applet is running fine with 4 classes but as I declare the structure of fifth class is not loading in a browser and throwing following error:

==========================================
java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost/dmronline/dmronline.jar
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.plugin.net.protocol.http.HttpUtils.followRedirects(Unknown Source)
at sun.plugin.cache.CachedJarLoader.isUpToDate(Unknown Source)
at sun.plugin.cache.CachedJarLoader.loadFromCache(Unknown Source)
at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
at sun.plugin.cache.JarCache.get(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection.connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
at sun.misc.URLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
load: class dmronline.frmMain.class not found.
java.lang.ClassNotFoundException: dmronline.frmMain.class
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(Unknown Source)
at sun.applet.AppletClassLoader.access$100(Unknown Source)
at sun.applet.AppletClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 10 more

=========================================

Here I am enclosing the structure of fifth class

public class table_sc{

public table_sc(){}//end constructor

}

Kindly, let me know why it is happening and how I can solve out this problem.

Looking forward to your kindly response

Regards,

bamboat_3@hotmail.com

[mwa103]

I just started working with servlets for class so I don't know very much about them, but I did find this discussion on a sun forum which talks about the 500 response code. Not sure if it will help you out or not, but it's worth a look.

Good luck.
-Mike
http://forum.java.sun.com/thread.jspa?threadID=448333&messageID=2048043

[ggomez]

mmmm...

the error is ocurring definetly on the servlet side.

did you see the getInputStream(unknown unknow)

the direction you are using.. i think you should change the localhost part with the direction of your server.

mmm i cant see anything else...

good luck