FooException.java

public class FooException extends Exception {
    
    public enum Type {
        
        notFound(404), alreadyExists(401), emailInvalid(401);

        private int httpStatusCode;

        Type(int httpStatusCode) {
            this.httpStatusCode = httpStatusCode;
        }

        public int getHttpStatusCode() {
            return httpStatusCode;
        }
    }
    
    private Type type;

    public FooException(String msg, Type type) {
        super(msg);
        this.type = type;
    }

    public Type getType() {
        return type;
    }
}