Java帮助重启程序

import java.util.Scanner ; public class Mal { public static void main (String []args) { System.out.println("Welcome") ; Scanner myinput=new Scanner (System.in) ; System.out.println("Make your choice. \n 1.Check a card number \n 2.Quit."); int choise=myinput.nextInt(); switch(choise) { case 1:System.out.println("Enter your credit card number: "); break; case 2:System.out.println("Are you sure?") ; String answer=myinput.next(); if(answer.equals("yes")){ System.out.println("Byee :)") ; System.exit(0); } break; default: System.out.println("Idiot!") ; break; } } } 

如果用户键入的内容不同于“是”，我想要一个程序再次启动

Answer 1

这是你能做的

有这样的旗帜

 boolean quit = false; 

一会儿你的选择

 while(!quit){ ... ... } 

和

如果用户想要退出，则设置quit = true 。

编辑：

像这样的东西

 public static void main(String a[]) { System.out.println("Welcome"); Scanner myinput = new Scanner(System.in); boolean quit = false; while (!quit) { System.out .println("Make your choise. \n 1.Check a card number \n 2.Quit."); int choise = myinput.nextInt(); switch (choise) { case 1: System.out.println("Enter your credit card number: "); break; case 2: System.out.println("Are you sure?"); String answer = myinput.next(); if (answer.equals("yes")) { System.out.println("Byee :)"); quit= true; } break; default: System.out.println("Idiot!"); break; } }