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我有一个问题，我想我知道答案但我不太确定。我将如何拨打和存储此信息
所以我做了这个节目，以下是账户类，并使用它
账户类
import java.util.Scanner;
import java.util.UUID;
public class Account {
double balance;
String name;
UUID AcctN;
int pin;
public void Account()
{
UUID idOne = UUID.randomUUID();
Scanner sc = new Scanner (System.in);
Scanner sa = new Scanner (System.in);
System.out.println ("Your starting balance is 0.0");
double initBal = 0;
balance = initBal;
System.out.println ("Enter your full name");
String owner = sa.nextLine();
name = owner;
UUID number = idOne;
AcctN = number;
System.out.println ("Enter your pin number containing ONLY 4 numbers");
int pins = sc.nextInt();
pin = pins;
}
public void withdraw (double amount)
{
if (balance <= 0)
{
System.out.println ("Insufficent funds");
}
else
{
balance -= amount;
}
}
public void deposit (double amount)
{
if (amount <= 0)
{
System.out.println ("You cannot deposit negative or 0 funds");
}
else
{
balance += amount;
}
}
public void withdrawfee (double amount)
{
if (balance <= 0)
{
System.out.println ("Insufficent funds");
}
else
{
double fee = 10;
balance -= amount + fee;
}
}
public double getBalance()
{
return balance;
}
public String toString()
{
return String.format ("User info: %s\n Balance: $%s\n Account Number: %s\n Pin Number: %s", name, balance, AcctN, pin);
}
}
主要类
import java.util.Scanner;
public class Tester {
public static void main (String [] args)
{
Scanner sc = new Scanner (System.in);
boolean quit = false;
Account ACT = new Account();
do
{
System.out.println ("Welcome to the Bank\n\n***********\n 1: Create account\n 2: Check accounts\n 3: Withdraw funds\n 4: Withdraw with fee\n 5: Deposit funds\n 6: Quit");
int input = sc.nextInt();
switch (input)
{
case 1:
System.out.println ("Make an account");
ACT.Account();
System.out.println ("Current information: ");
System.out.println (ACT.toString());
break;
case 2:
System.out.println (ACT.toString());
break;
case 3:
System.out.println ("How much do you wish to withdraw?");
ACT.withdraw(sc.nextDouble());
System.out.println ("Thank you for your service");
break;
case 4:
System.out.println ("How much do you wish to withdraw?");
ACT.withdrawfee(sc.nextDouble());
System.out.println ("An additional 10 dollars has been deducted from your account");
System.out.println ("Thank you for your service");
break;
case 5:
System.out.println ("How much do you wish to deposit");
ACT.deposit(sc.nextDouble());
System.out.println ("Thank you for your service");
break;
case 6:
quit = true;
break;
}
}while(!quit);
System.out.println ("Thank you for using the Bank..");
}
}
所以“创建账户开户银行计划'适用于一个人，如果我再次创建它，那么它只会覆盖名称和平衡。
所以，如果我想本质上存储所有这些信息，我只需要使用一个数组？但那么我将如何能够呼叫每个用户并从这些特定账户中提取/存入资金。
我想二叉搜索树可能会工作，但同时我不确定一个简单的数组列表是否会有效？
为了澄清我希望我能够
1）拨打一个特定的用户，可能会不得不使用。载有（）和我想的是，含有应该链接到一个特定的唯一帐户ID 。
2）一旦到达该用户，他们就能够像当前一样使用开关菜单。
这只是一个个人项目，有助于更好地理解Java如何工作，而不是作业。