How to: Throw Custom Exception in Jax-ws

There is an excellent article on Faults and exceptions in JAX-WS, however, it doesn’t say how to throw custom exception clearly. Another post mentioned the below information, which I found most useful after google search to solve the problem. Again, it is still not correct solution.

Make the exception look like a normal JAX-WS generated exception.   That
would basically mean defining a JAXB bean for the data that has all the
getter/setters and such for the data and making the exception look like:
@WebFault
public class MyException extends Exception {
     MyFaultInfo faultInfo;
     public MyException(String msg, MyFaultInfo mfi) {
            ...
     }
     public MyFaultInfo getFaultInfo() {
         return faultInfo;
     }
}
That is basically the "JAX-WS" standard way of doing it and would be portable.  
The entire schema for the exception is defined in the JAXB MyFaultInfo bean.

If you look into jax-ws defination of @WebFault, it is basically on the client side, and was automatically generated! There is no point putting them in the server code. I had to admit that the explanation was clear and I write the following code to solve this problem

public class CustomException extends Exception {

        private WSStatus faultInfo = null;
  
        public  CustomException(String message, WSStatus faultInfo)
        {
                super(message);
              this.faultInfo = faultInfo;
        }
        public  CustomException(String message, WSStatus faultInfo, Throwable cause)
      {
            super(message,cause);
            this.faultInfo = faultInfo;
      }         
              
      public CustomException(Exception ex)
      {
          super(ex.getMessage(),ex.getCause());
      }

      public WSStatus getErrorCode()
      {
          if(faultInfo==null)
              faultInfo = new WSStatus();
          return faultInfo;               
      }
}

Note that the generated code on client side would be something like CustomException_Exception extends Exception, so make sure you catch/throw the right exception.