exercise2_5.java

来自「java程序设计 机械工业出版社 书籍代码」· Java 代码 · 共 28 行

import javax.swing.JOptionPane;

public class Exercise2_5 {
  public static void main(String args[]) {
    // Read subtotal
    String subtotalString = JOptionPane.showInputDialog(null,
      "Enter subtotal:",
      "Exercise2_5", JOptionPane.QUESTION_MESSAGE);

    double subtotal = Double.parseDouble(subtotalString);

    // Read subtotal
    String rateString = JOptionPane.showInputDialog(null,
      "Enter gratuity rate:",
      "Exercise2_5", JOptionPane.QUESTION_MESSAGE);

    double rate = Double.parseDouble(rateString);

    double gratuity = subtotal * rate / 100;
    double total = subtotal + gratuity;

    System.out.println("Gratuity is " + gratuity);
    System.out.println("Total is " + total);

    System.exit(0);
  }
}