如何添加和從數組列表中檢索？

Question

我正在創建一個模擬銀行業務程序，並希望使用數組列表來跟蹤諸如姓，名，帳戶餘額等事情，然後我想在後面用打印語句顯示這些值。我該怎麼做呢？

Answer 1

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

    Account exampleAccount = new Account(); 
    exampleAccount.setFirstName("John"); 
    exampleAccount.setLastName("Doe"); 
    exampleAccount.setBalance(101.13d); 

    accounts.add(exampleAccount); 

    for(Account account : accounts) { 
     System.out.println("Name: " + account.getFirstName() + " " + account.getLastName() + 
       ". Balance: " + account.getBalance()); 
    // Or override Account's toString() method and do System.out.println(account.toString()) 
    }