I'm novice using Netbeans and I was trying to test how works WDSL generation.

I created a basic web service and when tried to generate the WDSL the following error occurs:

> 
> Error starting wsgen: class com.sun.tools.javac.api.JavacTool BUILD
>  FAILED (total time: 2 seconds)
> 
> 
> 

This is the code, very basic:

```
package ServiciosWeb;

import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;

@WebService(serviceName = "Cajero")
public class Cajero {

    @WebMethod(operationName = "hello")
    public String hello(@WebParam(name = "name") String txt) {
        return "Hello " + txt + " !";
    }
}

```

I googled the error message but only could obtain obscure explanations, none of them aplicable to this. Any advice about the meaning of this message and how to avoid it?