Scanner sc=newScanner(System.in);intcommand=sc.nextInt();switch(command){case1://登录login(accounts,sc);break;case2://注册reginster(accounts,sc);break;default: System.out.println("输入有误,");break; } } }privatestaticvoidlogin(ArrayList<Account> accounts, Scanner sc){if(accounts.size()=...
public class Bank { private ArrayList<Account> accounts; /** * A bank starts without any accounts. */ public Bank() { accounts = new Arraylist<Account>(); } 原文由 robert 发布,翻译遵循 CC BY-SA 4.0 许可协议 java 有用关注收藏 回复 阅读903 1 个回答 得票最新 社区维基1 发布于 2022-...
ArrayList<Account>accounts=new ArrayList<>(); showMain(accounts); } private static void showMain(ArrayList<Account>accounts) { while (true) { System.out.println("欢迎您进入黑马ATM系统"); System.out.println("1.登录账户"); System.out.println("2.注册开户"); System.out.println("请输入命令1,...
中是否存在值? List<CurrentAccount> lista = new ArrayList<CurrentAccount>(); CurrentAccount conta1 = new CurrentAccount("Alberto Carlos", 1052); CurrentAccount conta2 = new CurrentAccount("Pedro Fonseca", 30); CurrentAccount conta3 = new CurrentAccount("Ricardo Vitor", 1534); CurrentAccount co...
问从Java中arraylist中的对象内部的arraylist中获取值？EN当我们要 add 进第1个元素到 ArrayList 时，...
我如何不允许第二次添加我的 ArrayList 中已经输入的字符串使用 java 8 你可以做到这一点boolean nameExists = accounts.stream().anyMatch(account-> "name".equals(account.getName()));或者另一种方法是将 name 和 balance 作为键值对存储在HashMap 中，它有一个方法containsKey来检查键...
bankAccounts.add(newBankAcc); }publicvoidremoveBankAcc(intaccountNumber){for(BankAcc b: bankAccounts){if(b.accountNumber() == accountNumber){bankAccounts.remove(b);}else; } }publicStringaccountsList(){ String s ="ACCOUNTS UNDER MANAGER:"+"\n";for(BankAcc b: bankAccounts){s+= b.accoun...
ArrayList accName = new ArrayList(); for (int i = 0; i < user.getListofaccounts().toArray().length ; i++) { accName.add(user.getListofaccounts().get(i).getAccountName()); } List<AddUserInformation> addUserInformation1 = new ArrayList<AddUserInformation>(); for (int i = 0; i...
它是非线程安全的，一般多用于单线程环境下(与Vector最大的区别就是，Vector是线程安全的，所以ArrayList ...
C# file write using another account also changed file privilege, How to avoid it? C# File.WriteAllLines(string path, string[] array) writes an extra empty line? c# FileSystemWatcher does not raise an event when a file is modified. It only raises the event when a file is created or delete...