Re: values for fields in failure/exception

hi,
In my program I need to return a result object as below

class MyResult {
    private boolean success;
    private double distance;
    private String matchFileName;
    private String message;

    public MyResult (boolean s, double d, String mfn, String msg) {
        this.success = s;
        this.distance = d;
        this.matchFileName = mfn;
        this.message = msg;
    }
    //getters and setters...

}

In my program , I am returning a MyResult instance containing values
from a calculation.If an exception occurs ,I would like to return the
object with values which represent a failed calculation .The problem
is that,I cannot put distance as 0.0 since it is one of the valid
distance values.
So I put distance as Double.NaN.I don't know if this is the correct
way..Can someone suggest a better solution?

public MyResult getResult() {
    MyResult res = null;
    try{
        res = calculate();

    }catch(SomeException e) {
        return new MyResult ( false, Double.NaN, "", e.getMessage=

    }
    return res;

}