import javax.swing.JOptionPane;public class Money {    public static void main(String[] args){    double gratuity;    double total;    String input = JOptionPane.showInputDialog(null,"请输入费用：","对话框",JOptionPane.QUESTION_MESSAGE);    String input1 =JOptionPane.showInputDialog(null,"请输入酬金：","对话框",JOptionPane.QUESTION_MESSAGE);    double subtotal = Double.parseDouble(input);    double rate = Double.parseDouble(input1);    gratuity = (int)(subtotal * rate * 0.01 * 100)/100.00;    total =(int)((subtotal + gratuity)*100)/100.00;    System.out.println("The grtuity is " + gratuity + " and total is " + total);    }}