Java accp7.0 第十二章 实现菜单的级联效果

<span style="font-size:18px;">import java.util.Scanner;public class Menu {public void denglu() {System.out.println("\n\t欢迎使用我行我素购物管理系统\n");System.out.println("\t\t 1.登陆系统");System.out.println("\t\t 2.退出\n");System.out.println("*****************************************");System.out.println("请选择,请输入数字:");}public void shixianzhu() {System.out.println("*******************************************");System.out.println("\t\t 1.客户信息管理");System.out.println("\t\t 2.真情回馈");System.out.println("*******************************************");System.out.println("输入0返回菜单上一级");boolean a;do {a = false;Scanner input = new Scanner(System.in);int b = input.nextInt();if (b == 1) {xinxi();} else if (b == 2) {zhenqing();} else if (b == 0) {denglu();} else {System.out.println("输入错误!请重新输入数字!");a = true;}} while (a);}public void xinxi() {System.out.println("*********************************************");System.out.println("1.查询客户信息");System.out.println("2.修改客户信息");System.out.println("3.添加客户信息");System.out.println("4.显示所有客户信息");System.out.println("********************************************");System.out.println("输入0返回菜单上一级");boolean a;do {a = false;Scanner input = new Scanner(System.in);int b = input.nextInt();if (b == 1) {System.out.println("查询客户信息");} else if (b == 2) {System.out.println("修改客户信息");} else if (b == 3) {System.out.println("添加客户信息");} else if (b == 4) {System.out.println("显示所有客户信息");} else if (b == 0) {shixianzhu();break;} else {System.out.println("重新输入");}} while (a);}public void zhenqing() {System.out.println("*********************************************");System.out.println("1.幸运大放送");System.out.println("2.幸运抽奖");System.out.println("3.生日问候");System.out.println("********************************************");System.out.println("输入0返回菜单上一级");boolean a;do {a = false;Scanner input = new Scanner(System.in);int b = input.nextInt();if (b == 1) {System.out.println("幸运大放送");} else if (b == 2) {System.out.println("幸运抽奖");} else if (b == 3) {System.out.println("生日问候");} else if (b == 0) {shixianzhu();break;} else {System.out.println("重新输入");}} while (a);}}</span>

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<span style="font-size:18px;">测试类关键代码:</span><pre class="java" name="code">import java.util.Scanner;public class TestMenue {/** * @param args */public static void main(String[] args) {Scanner input =new Scanner (System.in);boolean a=true;Menu h=new Menu();h.denglu();do{int chioce=input.nextInt();switch(chioce){case 1:h.shixianzhu();break;case 2:System.out.println("谢谢你的使用!");a=false;break;}}while(a);}}