ex2_3.java

Introduction to java programming 一书中所有编程练习部分的源码

import javax.swing.JOptionPane;


/**
 *
 * @author xiaolei
 */
public class EX2_3 {
     public static void main(String[] args) {
         double feet, meter;
         feet = Double.parseDouble(JOptionPane.showInputDialog("输入英尺数："));
         meter = 0.305 * feet;
         JOptionPane.showMessageDialog(null, "结果："+meter);
    }

}