我知道它不是调试器站点，但我只是想问一下我在这段代码中做错了什么。
当我运行该程序时，我首先添加一个新帐户，然后当我存入或取出它时说错误的密码。这是我的代码
代码：
import java.io.*;
import java.util.Random;
public class BankA {
public static int NewRandom(int min, int max) {
Random rand = new Random();
int randomNum = rand.nextInt((max - min) + 1) + min;
return randomNum;
}
public static void main(String args[])throws IOException, InterruptedException {
InputStreamReader ir = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(ir);
Bank myBank = new Bank();
int Option = 1, Account_Number, Account_Password, atempts = 0, Pass;
String Name;
double Balance, Money;
System.out.println("Please wait, the system is starting...");
while(Option !=5) {
Thread.sleep(4000);
System.out.println("1) Open a new bank account");
Thread.sleep(250);
System.out.println("2) Deposit to a bank account");
Thread.sleep(250);
System.out.println("3) Withdraw to bank account");
Thread.sleep(250);
System.out.println("4) Print the detailed account information including last transactions");
Thread.sleep(250);
System.out.println("5) Quit");
System.out.println();
System.out.print(" Enter Option [1-5]: ");
Option = Integer.parseInt(br.readLine());
switch(Option) {
case 1 : System.out.println("Enter a customer name :");
Name = br.readLine();
System.out.println("Enter a opening balance :");
Balance = Double.parseDouble(br.readLine());
Thread.sleep(250);
System.out.println("Creating your account....");
Thread.sleep(500);
System.out.println("Account Has been created\n Account number: " + myBank.AddNewAccount(Name, Balance)[0]+"\nYour password : "+ myBank.AddNewAccount(Name, Balance)[1]);
break;
case 2 : System.out.println("Enter a account number :");
Account_Number = Integer.parseInt(br.readLine());
System.out.println("Enter a account password :");
Account_Password = Integer.parseInt(br.readLine());
System.out.println("Enter a deposit amount :");
Money = Double.parseDouble(br.readLine());
myBank.Deposit(Account_Number, Account_Password, Money);
break;
case 3 : System.out.println("Enter a account number :");
Account_Number = Integer.parseInt(br.readLine());
System.out.println("Enter a account password :");
Account_Password = Integer.parseInt(br.readLine());
System.out.println("Enter a deposit amount :");
Money = Double.parseDouble(br.readLine());
myBank.Withdraw(Account_Number, Account_Password, Money);
break;
case 4 : System.out.println("Enter a account number :");
Account_Number = Integer.parseInt(br.readLine());
System.out.println("Enter a account password :");
Account_Password = Integer.parseInt(br.readLine());
myBank.Transactions(Account_Number, Account_Password);
break;
case 5 : System.out.println("Please Enter your password :");
Pass = Integer.parseInt(br.readLine());
if(Pass == myBank.Password) {
System.out.println(" System shutting down.....");
Option = 5;
break;
}
else {
Thread.sleep(250);
System.out.println("You have enter a wrong password. Please try again");
Option = 0;
}
default: System.out.println("Invalid option. Please try again.");
}
}
}
static class Bank {
private int Password=2684;
private BankAccount[] accounts;
private int numOfAccounts;
public Bank() {
accounts = new BankAccount[100];
numOfAccounts = 0;
}
public int [] AddNewAccount(String Name, Double Balance) {
BankAccount b = new BankAccount(Name, Balance);
accounts[numOfAccounts] = b;
numOfAccounts++;
int Acc = b.getAccountNum()[0];
int Pass = b.getAccountNum()[1];
int[]details = {Acc, Pass};
return details;
}
public void Withdraw(int Account_Number, int pass, double Money) {
for (int i =0; i<numOfAccounts; i++) {
int a = accounts[i].getAccountNum()[0];
int p = accounts[i].getAccountNum()[1];
if (Account_Number == a) {
if( pass == p) {
accounts[i].withdraw(Money);
System.out.println(" Amount withdrawn successfully");
return;
} else {
System.out.println("Wrong Password");
}
}
}
System.out.println(" Account number not found.");
}
public void Deposit(int Account_Number, int pass, double Money) {
for (int i =0; i<numOfAccounts; i++) {
int a = accounts[i].getAccountNum()[0];
int p = accounts[i].getAccountNum()[1];
if (Account_Number == a) {
if( pass == p) {
accounts[i].withdraw(Money);
System.out.println(" Amount deposited successfully");
return;
} else {
System.out.println("Wrong Password");
}
}
}
System.out.println(" Account number not found.");
}
public void Transactions(int Account_Number, int pass) {
for(int i = 0;i<numOfAccounts; i++) {
int a = accounts[i].getAccountNum()[0];
int p = accounts[i].getAccountNum()[1];
if (Account_Number == a ) {
if( pass == p) {
System.out.println(accounts[i].getAccountInfo());
System.out.println(" Last transaction: " + accounts[i].getTransactionInfo(accounts[i].getNumberOfTransactions()-1));
return;
} else {
System.out.println("Wrong Password");
}
}
}
System.out.println("Account number not found.");
}
}
static class BankAccount{
private int User_Password;
private int accountNum;
private String customerName;
private double balance;
private double[] transactions;
private String[] transactionsSummary;
private int numOfTransactions;
private static int noOfAccounts=0;
public String getAccountInfo(){
return " Account number: " + accountNum + "\n Customer Name: " + customerName + "\n Balance:" + balance +"\n";
}
public String getTransactionInfo(int n) {
String transaction = transactionsSummary[n];
return transaction;
}
public BankAccount(String abc, double xyz){
customerName = abc;
balance = xyz;
noOfAccounts ++;
User_Password = NewRandom(1000, 9999);
accountNum = NewRandom(800000000, 999999999);
transactions = new double[100];
transactionsSummary = new String[100];
transactions[0] = balance;
transactionsSummary[0] = "A balance of : Rs" + Double.toString(balance) + " was deposited.";
numOfTransactions = 1;
}
public int [] getAccountNum(){
int account = accountNum;
int Pass = User_Password;
int [] details = {account, Pass};
return details;
}
public int getNumberOfTransactions() {
return numOfTransactions;
}
public void deposit(double amount){
if (amount<=0) {
System.out.println("Amount to be deposited should be positive");
} else {
balance = balance + amount;
transactions[numOfTransactions] = amount;
transactionsSummary[numOfTransactions] = "Rs." + Double.toString(amount) + " was deposited.";
numOfTransactions++;
}
}
public void withdraw(double amount) {
if (amount<=0){
System.out.println("Amount to be withdrawn should be positive");
}
else {
if (balance < amount) {
System.out.println("Insufficient balance");
} else {
balance = balance - amount;
transactions[numOfTransactions] = amount;
transactionsSummary[numOfTransactions] = "Rs." + Double.toString(amount) + " was withdrawn.";
numOfTransactions++;
}
}
}
}
}
答案 0 :(得分：3)
您在创建新帐户的代码中遇到问题：
System.out.println("Account Has been created\n Account number: " + myBank.AddNewAccount(Name, Balance)[0]+"\nYour password : "+ myBank.AddNewAccount(Name, Balance)[1]);
您在该行上拨打myBank.AddNewAccount()两次，这意味着打印的帐号将用于帐号＃1，而打印的密码则用于帐号＃2。
更改它，以便您只创建一个帐户并打印详细信息：
int[] newAccount = myBank.AddNewAccount(Name, Balance);
System.out.println("Account Has been created\n Account number: " + newAccount[0]+"\nYour password : "+ newAccount[1]);
此外，在我测试您的代码时，您似乎在withdraw()中调用了deposit()而不是Bank.deposit()：
accounts[i].withdraw(Money);
答案 1 :(得分：2)
这是因为myBank.AddNewAccount(Name, Balance)在下面的语句中被调用两次，实际上每个帐户只应调用一次。
System.out.println("Account Has been created\n Account number: " + myBank.AddNewAccount(Name, Balance)[0]+"\nYour password : "+ myBank.AddNewAccount(Name, Balance)[1]);
在下面对代码进行更改并保持正常工作：
int[] arrDetails= myBank.AddNewAccount(Name, Balance);//added new line of code
System.out.println("Account Has been created\n Account number: " + arrDetails[0]+"\nYour password : "+ arrDetails[1]);// modified existing code
案例1的最终代码应为：
case 1 : System.out.println("Enter a customer name :");
Name = br.readLine();
System.out.println("Enter a opening balance :");
Balance = Double.parseDouble(br.readLine());
Thread.sleep(250);
System.out.println("Creating your account....");
Thread.sleep(500);
int[] arrDetails= myBank.AddNewAccount(Name, Balance);
System.out.println("Account Has been created\n Account number: " + arrDetails[0]+"\nYour password : "+ arrDetails[1]);
break;
答案 2 :(得分：0)
你的问题在这里：
System.out.println("Account Has been created\n Account number: " + myBank.AddNewAccount(Name, Balance)[0]+"\nYour password : "+ myBank.AddNewAccount(Name, Balance)[1]);
为什么在上述方法中添加两次新帐户？这会创建一个具有不同密码的重复帐户。将上面的行更改为此。
myBank.AddNewAccount(Name, Balance);
System.out.println("Account Has been created\n Account number: " + myBank.getAccountNum()[0].+"\nYour password : "+ myBank.getAccountNum()[1]);
答案 3 :(得分：0)
您创建两个对象并返回第二个obj密码。
System.out.println("Account Has been created\n Account number: " + myBank.AddNewAccount(Name, Balance)[0]+"\nYour password : "+ myBank.AddNewAccount(Name, Balance)[1]);
在上面编码你的呼叫myBank.AddNewAccount两次，它创建了两个对象并且密码你的打印是第二个对象密码，这就是它显示错误密码的原因。
你可以使用这段代码。
int[] details = myBank.AddNewAccount(Name, Balance);
System.out.println("Account Has been created\n Account number: " + details [0]+"\nYour password : "+ details[1]);