java - 如何避免Java中的无限循环

Question

我怎样才能重新编写这个，这样我就不会使用 while(true) 循环？ 我需要该方法来打破 while 循环的条件，但我似乎无法解决它。

ArrayList<Account> accounts = new ArrayList<Account>();

public void enterCustomers()
{
   System.out.println("Enter customer names or q to quit entering names");

   while(true)
    {
        Scanner scan = new Scanner(System.in);                          //find alternative to while true

        System.out.print("Enter a customer name: ");
        String name = scan.nextLine();

        if(name.equalsIgnoreCase("q"))
        {
            break;
        }

        System.out.print("Enter openning balance: ");
        Double balance = scan.nextDouble();

        Account a = new Account(name, balance);
        accounts.add(a);}
}

Answer 1

我认为解决此问题的最简单方法是将 while 循环的条件设置为与 if 条件相反的条件，如下所示:

ArrayList<Account> accounts = new ArrayList<Account>();

public void enterCustomers()
{
   Scanner scan = new Scanner(System.in);
   System.out.println("Enter customer names or q to quit entering names");
   System.out.println("Enter a customer name:");
   Stirng name = scan.nextLine();

   while(!name.equalsIgnoreCase("q"))
    {     
        System.out.print("Enter openning balance: ");
        Double balance = scan.nextDouble();

        Account a = new Account(name, balance);
        accounts.add(a);            

        System.out.print("Enter a customer name: ");
        name = scan.nextLine();
    }
}