Exception in thread main java.lang.NoClassDefFoundError

[kkid]

I am new to java programming, it is also the first ever language I have tried to learn so am very new at debugging.

I have compiled my simple program perfectly fine, I got the class file output as normal, however I have a run-time issue. I get the following message:



What is wrong, how do I fix it?

This is my source code:

class Operators {
public static void main(String[] args) {

double first = 4.0;
double second = 6.0;

System.out.println("The first value equals " + first);
System.out.println("The second value equals " + second);
System.out.println(" ");
System.out.print("These two values added together equals ");
System.out.println(first + second);
System.out.print("The second value minus the first equals ");
System.out.println(second - first);
System.out.print("The product of these two values ");
System.out.println(first * second);
System.out.print("The second value divided by the first equals ");
System.out.println(first / second);


}
}

Thanks for reading

[kkid]

Updated code, same issue:

class Operators {
public static void main(String[] args) {

double first = 4.0;
double second = 6.0;

System.out.print("The first value equals ");
System.out.println(first);
System.out.print("The second value equals ");
System.out.println(second);
System.out.println(" ");
System.out.print("These two values added together equals ");
System.out.println(first + second);
System.out.print("The second value minus the first equals ");
System.out.println(second - first);
System.out.print("The product of these two values ");
System.out.println(first * second);
System.out.print("The second value divided by the first equals ");
System.out.println(first / second);


}
}

[awinston]

It says at the very top next to the error:

(wrong name: Operators)

Does that help?

[kkid]

Can't I use "Operators" as the class name then?
Is it a keyword?

[awinston]

Double check exactly what you typed into the command line.

[kkid]

OMG!

It was just because I typed "operators" instead of "Operators"?!

[awinston]

Yes.

[kkid]

haha, thanks for your help.

I thought it was more complex than that.

So the compiler doesn't need capitals but the VM does?

[awinston]

Apparently so. I didn't realize the compiler didn't require it, so thank you for that information.

I always assume that everything is case-sensitive just as a precaution!

[kammce]

haha, thanks for your help.

I thought it was more complex than that.

So the compiler doesn't need capitals but the VM does?

Just to make a statement. The Windows Command-line is NOT case sensitive. The VM is though. But other terminals like BASH, CShell and other *nix terminals are case case-sensitive. That does not mean you should not start typing everything in there with all caps.