Ordenar 3 variables con 3 If

    public void ordre3 (Scanner scan){
        double num1, num2, num3, max, min, mid;
        System.out.println("Introdueixi tres numeros reals");
        System.out.print("num1: ");
        num1=scan.nextDouble();
        System.out.print("num2: ");
        num2=scan.nextDouble();
        System.out.print("num3: ");
        num3=scan.nextDouble();
        if ((num1<num2)){
            min=num1;
            mid=num2;
        }else{
            min=num2;
            mid=num1;
        }
        if(num3<min){
            max=mid;
            mid=min;
            min=num3;
        }else{
            max=num3;
        }
        if(max<mid){
            max=max+mid;
            mid=max-mid;
            max=max-mid;
        }
        System.out.println("El ordre de major a menor es: "+max+" "+mid+" "+min);
    }