java errors at http://www.cut-the-knot.org/Generalization/ce

Java Plug-in 1.6.0_43
Using JRE version 1.6.0_43-b01 Java HotSpot(TM) Server VM
User home directory = /home/tthtlc
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


sun.plugin2.main.client.PluginMain: unrecognized message ID 46
load: class ThreeCirclesAndCeva not found.
java.lang.ClassNotFoundException: ThreeCirclesAndCeva
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:262)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:263)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:193)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:174)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:713)
	at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3031)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1497)
	at java.lang.Thread.run(Thread.java:662)
Exception: java.lang.ClassNotFoundException: ThreeCirclesAndCeva
load: class ThreeInOne not found.
java.lang.ClassNotFoundException: ThreeInOne
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:262)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:263)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:193)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:174)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:713)
	at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3031)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1497)
	at java.lang.Thread.run(Thread.java:662)
Exception: java.lang.ClassNotFoundException: ThreeInOne
load: class ThreeCirclesAndCeva not found.
java.lang.ClassNotFoundException: ThreeCirclesAndCeva
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:262)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:263)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:193)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:174)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:713)
	at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3031)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1497)
	at java.lang.Thread.run(Thread.java:662)
Exception: java.lang.ClassNotFoundException: ThreeCirclesAndCeva
load: class ThreeInOne not found.
java.lang.ClassNotFoundException: ThreeInOne
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:262)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Plugin2ClassLoader.java:263)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:193)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Plugin2ClassLoader.java:174)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Plugin2ClassLoader.java:713)
	at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3031)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1497)
	at java.lang.Thread.run(Thread.java:662)
Exception: java.lang.ClassNotFoundException: ThreeInOne

Error encountered at:

http://www.cut-the-knot.org/Generalization/ceva.shtml