Thread: Code Error

l keep getting a code error when processing javac in the DOS command prompt using jdk-9. I can't find any syntax errors.
The process stops with error listed after class Moonweight. Here is the code. Any ideas would be appreciated.
I'm just learning from a library book.

code = java

/* A program to compute your effective weight on the moon.
Program called "Moonweight.java".
*/

class Moonweight {
public static void main(String args[]) {
double eweight; // weight in pounds on earth
double mweight; // weight in pounds on the moon

eweight = 230; // weight on earth
mweight = eweight * .17; // calculate effective weight on moon

System.out.println("weight on earth is" + eweight);
System.out.println("weight on moon is" + mweight);
}
}
/code

I updated with additional error message.
It is probably so simple...I just don't see it.
Thanks for reviewing.

At the DOS command prompt the directory is set for where the javac file and Moonweight.java file is located under \bin.
I run javac Moonweight.java and get the 1 error message pointing to class Moonweight {.
This was version jdk-9.

Since then I have uninstalled Java version 9 and installed version 8. I will try again and see what the results will be.
Thank you!