15章 上机4

import java.util.*;public class kkk1 {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubScanner input = new Scanner(System.in);String name, pwd;int[] num = { 1, 2, 3, 4, 5 };String[] goods = { "电风扇", "洗衣机", "电视机", "冰箱", "空调" };double[] price = { 124.23, 4500, 8800.90, 5000.88, 4456, 12000.46 };System.out.print("请输入用户名：\n");name = input.next();System.out.print("请输入密码：\n");pwd = input.next();if (name.equals("Tom") && pwd.equals("123")) {System.out.print("登录成功！\n");} else {System.out.print("登录失败！\n");return;}System.out.print("*******欢迎进入商品批发城*********\n");System.out.print("编号\t物品\t价格\t");for (int i = 0; i < num.length; i++) {System.out.print("\n" + num[i] + "\t" + goods[i] + "\t");StringBuffer sf = new StringBuffer(String.valueOf(price[i]));if (sf.indexOf(".") > 3) {for (int j = sf.indexOf(".") - 3; j > 0; j = j - 3) {sf.insert(j, ",");}}System.out.print(sf.toString());}System.out.print("\n****************************\n");System.out.print("请输入您的商品批发号:");int num1 = input.nextInt();System.out.print("请输入您的商品数量:");int num2 = input.nextInt();double zj=num2 * price[num1-1];System.out.println("您需要付款:"+zj);}}