Net Beans program To Check Whether Given Number is Armsrong no. or not

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
 {                                       
       
        int N = Integer.parseInt(t1.getText());
        int a1 = N;
        int q,r,c=0;
        while (N!=0)
         {
            q= N/10;
            r=N%10;
            N=q;
            c= c+(r*r*r);
          }
        if (a1==c)
            R.setText("An Amstrong Number");
        else
            R.setText("Not an Amstrong Number");
    }