Hi guys, i am very new to Java aswell as to this forum this is my first post.

I hope someone can help me here.

when trying to run a simple HelloWorld program i get an error

exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld

javac HelloWorld.java works fine, it compiles
but java HelloWorld doesnt run what can i do to fix this?

I've put HelloWorld.java and HelloWorld.class in C:\Tests, and i run it from that directory using Notepad++

any help would be welcome.

oh and i forgot this problem started after i installed Quicktime.