Banking Deposit Amount Calculation in Java

In this tutorials will teach Banking Deposit Amount Calculation in Java following these conditions.

User shall be able to choose as 200days 0r 100days option.

• if the user select 200days option includes 20% interest rate.
• if the user select 100days option includes 10% interest rate.

Double amount = Double.parseDouble(txtAmount.getText());
String days = (String)cboDays.getSelectedItem();
Double tot,interest;
      
if(days.equals("200"))
   {
     interest = amount * 20/100 / 365 * 200;
     txtInterest.setText(String.valueOf(interest));
     tot = amount + interest;
     txtTot.setText(String.valueOf(tot));
  } 
else if(days.equals("100"))
     {
       interest = amount * 15/100 / 365 * 100;
       txtInterest.setText(String.valueOf(interest));
       tot = amount + interest;
       txtTot.setText(String.valueOf(tot));
     }
     else
     {
        JOptionPane.showMessageDialog(null, "Something Wrong");
     }

i have attached the video link below. which will do this tutorials step by step