Thread: Small help with my code :)

I swear, this code worked for me yesterday. It didn't give me an error or anything, but today as I decided to use it again, it was full of errors. I've never encountered those before, so I don't understand what should I do.

Here's the code:
__________________________________________________ ________________
package jesus;
import java.util.*;
public class Gangster {
public static void main(String[] args) {
double ew, mw;
Scanner kb = new Scanner (System.in);
System.out.print("Please enter your weight: ");
ew=0.1654*mw;
System.out.print("Your moon weight is: "+mw);
}
}_________________________________________________ __
mw=moon weight.
ew= earth weight.
It gives me an error almost everywhere.
The "public class" is an error (it is undefined); The System is an error (it cannot be resolved); The "import java.util.*; is an error(it cannot be resolved); The package is an error,

If needed: I use eclipse 2022-12 IDE.
I cannot attach images yet.

Originally Posted by robolokidA

mw=moon weight
ew= earth weight

This type of mapping from variable to meaning is something inherited from mathematics. Modern programming languages can incorporate that information directly into the name like so

double moon_weight, earth_weight;

It makes the code much more legible, and frees your mind to work on the problem rather than spending effort on memory lookups.

Hi, thanks for trying to help! However, I have found my mistake, it was pretty stupid. I just uninstalled JVM and JDK from my computer. But thank you very much

Originally Posted by AngleWyrm

This type of mapping from variable to meaning is something inherited from mathematics. Modern programming languages can incorporate that information directly into the name like so

double moon_weight, earth_weight;

It makes the code much more legible, and frees your mind to work on the problem rather than spending effort on memory lookups.

It's actually a good idea, thank you!