第十二章上机3

import java.util.*;
public class TestMenu {
public static void main(String[] args) {
	Scanner input=new Scanner(System.in);
	boolean com=true;
	Menu menu=new Menu();
	menu.showMenu();
	do{
		int shu=input.nextInt();
		switch(shu){
		case 1:
			menu.showMenu1();
			break;
		case 2:
			System.out.println("退出");
			com=false;
			break;
		}
	}while(com);
}
}
 
  
 import java.util.*;public class Menu {/** * @author Administrator */public void showMenu() {System.out.println("\n\t欢迎使用我行我素购物管理系统");System.out.println("\t\t1.登录系统\n");System.out.println("\t\t2.退出\n");System.out.println("*******************************");System.out.println("请选择,输入数字");}public void showMenu1() {System.out.println("\n\t欢迎使用我行我素购物管理系统主菜单");System.out.println("\t\t1.客户信息管理\n");System.out.println("\t\t2.真情回馈\n");System.out.println("*******************************");System.out.println("请选择,输入数字");boolean com;do {com = false;Scanner input = new Scanner(System.in);int shu = input.nextInt();if (shu == 1) {showMenu2();} else if (shu == 2) {showMenu3();} else if (shu == 0) {showMenu();} else {System.out.println("输入错误,请重新输入");com = true;}} while (com);} public void showMenu2(){ System.out.println("\n\t欢迎使用我行我素购物管理系统>客户信息管理");System.out.println("\t\t1.查询客户信息\n");System.out.println("\t\t2.修改客户信息\n");System.out.println("\t\t3.添加客户信息\n");System.out.println("\t\t4.显示所有客户信息\n");System.out.println("*******************************");System.out.println("请选择,输入数字");boolean com;do {com = false;Scanner input = new Scanner(System.in);int shu = input.nextInt();if (shu == 1) {System.out.println("查询客户信息");} else if (shu == 2) {System.out.println("修改客户信息");} else if (shu == 3) {System.out.println("添加客户信息");}else if(shu==4){System.out.println("显示所有客户信息");} else if (shu == 0) {showMenu1();} else {System.out.println("输入错误,请重新输入");com = true;}} while (com); }public void showMenu3() {System.out.println("\n\t欢迎使用我行我素购物管理系统>真情回馈");System.out.println("\t\t1.幸运大放送\n");System.out.println("\t\t2.幸运抽奖\n");System.out.println("\t\t3.生日问候\n");System.out.println("*******************************");System.out.println("请选择,输入数字");boolean com;do {com = false;Scanner input = new Scanner(System.in);int shu = input.nextInt();if (shu == 1) {System.out.println("执行幸运大放送");} else if (shu == 2) {System.out.println("修改客户信息");} else if (shu == 3) {System.out.println("执行生日问候");} else if (shu == 0) {showMenu1();} else {System.out.println("输入错误,请重新输入");com = true;}} while (com);}} 
  
 
  
 
  
import java.util.*;
public class TestMenu {
public static void main(String[] args) {
	Scanner input=new Scanner(System.in);
	boolean com=true;
	Menu menu=new Menu();
	menu.showMenu();
	do{
		int shu=input.nextInt();
		switch(shu){
		case 1:
			menu.showMenu1();
			break;
		case 2:
			System.out.println("退出");
			com=false;
			break;
		}
	}while(com);
}
}