I compiled a simple program with javac then when I tried to run it I got this error.

[Colin@localhost JavaSource]$ javac PCFixed.java
[Colin@localhost JavaSource]$ java PCFixed.class
Exception in thread "main" java.lang.NoClassDefFoundError: PCFixed/class
Caused by: java.lang.ClassNotFoundException: PCFixed.class
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
Could not find the main class: PCFixed.class. Program will exit.
[Colin@localhost JavaSource]$

I also tried another program I knew worked yesterday and it gave the same error. I was wondering if anybody knew what was wrong with this thing. When I use Netbeans everything goes ok but I don't like using it at the moment as these are all simple little programs that don't require the package statement and netbeans seems to think that everything needs to be in a package. I prefer freestyle anyway. Any help would be great.

Did you define a main() method in that class?

public static void main(String[] args)
{
}

Yes main was defined. And when I tried to run one that was compiled and ran yesterday without error. Today there was an error. For some reason java command does not want to function on any programs. If you run the command by itself you get the list of options but if you try to run it on any .class files it gives the exact same error every time like it can't even find the file.

I hope this works for you. I've had the same problem and suddenly stumbled on the solution.

To run the program, it's

java PCFixed

not

java PCFixed.class

That fixed it thank you. Funny how simple the solution is.