switch demo

package day03; import java.util.Scanner; public class Command { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("请选择功能: 1.显示全部记录 2.查询登录记录 0.退出"); int command = scan.nextInt(); switch(command){ case 1: System.out.println("显示全部记录"); break; case 2: System.out.println("查询登录记录"); break; case 0: System.out.println("欢迎使用"); break; default: System.out.println("输入错误"); } } } package day03; import java.util.Scanner; public class Command { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("请选择功能: 1.显示全部记录 2.查询登录记录 0.退出"); int command = scan.nextInt(); switch(command){ case 1: System.out.println("显示全部记录"); break; case 2: System.out.println("查询登录记录"); break; case 0: System.out.println("欢迎使用"); break; default: System.out.println("输入错误"); } } }