3
Я создаю проект, который позволяет пользователю делать то, что вы обычно можете использовать в банке (создавать, удалять счета, снимать, депонировать, печатать транзакции).Проблема с присвоением переменной
Моя проблема печать сделка. Я могу печатать что-то, но неправильные значения появляются. Например, при создании банковского счета вам нужно будет ввести начальный баланс, который был (5,00). Когда я печатаю транзакцию, ничего не возникает. Таким образом, я ввожу деньги на один и тот же счет (10.00), когда я печатаю, (5.00) от него появляется и появляется (10.00) в транзакции. Однако, когда я просматриваю баланс счета, все это добавляет к тому, что он показывает.
Может ли кто-нибудь помочь мне устранить неполадки и устранить проблему?
package mainsample;
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
BankProcess bankProcess = new BankProcess();
TransactionProcess transactionProcess = new TransactionProcess();
Bank bank = new Bank();
BankAccount bankAccount = new BankAccount();
int input;
int selection;
while(true) {
System.out.println("");
System.out.println("######## MENU ########");
System.out.println("[1] Create an account");
System.out.println("[2] Print all existing accounts");
System.out.println("[3] Delete an account");
System.out.println("[4] Deposit");
System.out.println("[5] Withdraw");
System.out.println("[6] Print transactions");
System.out.println("[0] Exit");
System.out.println("######################");
System.out.println("Please choose one of the following: ");
selection = scan.nextInt();
switch (selection) {
case 0:
System.out.println("Exit Successful");
System.exit(0);
break;
case 1:
System.out.println("'[1] Create an account' has been selected.");
System.out.print("Account Id: ");
int accountId = scan.nextInt();
scan.nextLine();
System.out.print("Holder Name: ");
String holderName = scan.nextLine();
System.out.print("Holder Address: ");
String holderAddress = scan.nextLine();
System.out.print("Opening Balance: ");
double openingBalance = scan.nextDouble();
System.out.print("Open Date: ");
String openDate = scan.next();
bankAccount = new BankAccount(accountId, holderName, openingBalance, holderAddress, openDate);
bank.setAccounts(bankProcess.openNewAccount(bank.getAccounts(), bankAccount));
System.out.println("Successfully Added.");
break;
case 2:
System.out.println("'[2] Display all existing accounts' has been selected");
System.out.println("-----------------------------------------------------");
bank.getAccounts().forEach((i,b)->System.out.println(b));
System.out.println("-----------------------------------------------------");
break;
case 3:
System.out.println("[3] Delete an account has been selected");
System.out.println("Enter the account ID: ");
int accountNo = scan.nextInt();
bankAccount = bank.getAccount(accountNo); // get bankAccount from account id
bank.removeAccounts(bankProcess.removeAccount(bank.getAccounts(), bankAccount));
System.out.println("Account has been deleted.");
break;
case 4:
System.out.println("[4] Deposit has been selected");
System.out.println("Enter account ID: ");
int accountNumber = scan.nextInt();
System.out.println("Enter deposit amount: ");
double depositAmount = scan.nextDouble();
transactionProcess.deposit(bankAccount, depositAmount);
break;
case 5:
System.out.println("[5] Withdraw has been selected");
System.out.println("Enter account ID: ");
int accountNu = scan.nextInt();
System.out.println("Enter withdraw amount: ");
double withdrawAmount = scan.nextDouble();
transactionProcess.withdraw (bankAccount, withdrawAmount);
break;
case 6:
System.out.println("[6] Print Transaction has been selected");
System.out.println("Enter account ID: ");
int accountN = scan.nextInt();
bankAccount = bank.getAccount(accountN);
for (Transaction transaction: bankAccount.getTransactions()) {
// print transaction information ...
System.out.println(transaction.toString());
}
break;
default:
System.out.println("Your choice was not valid!");
}
}
}
}
package mainsample;
/**
*
* @author Khalid
*/
public class Transaction {
private String transactionType;
private double transactionAmount;
private int transactionDate;
public Transaction() {}
public Transaction(String transactionType, double transactionAmount, int transactionDate) {
this.transactionType = transactionType;
this.transactionAmount = transactionAmount;
this.transactionDate = transactionDate;
}
public int getTransactionDate() {
return transactionDate;
}
public void setTransactionDate (int transactionDate) {
this.transactionDate = transactionDate;
}
public String getTransactionType() {
return transactionType;
}
public void setTransactionType(String transactionType) {
this.transactionType = transactionType;
}
public double getTransactionAmount() {
return transactionAmount;
}
public void setTransactionAmount(double transactionAmount) {
this.transactionAmount = transactionAmount;
}
//Override the toString() method of String ?
public String toString() {
return "\nTransaction Amount : "+ this.transactionAmount +
"\nTransaction Type : " + this.transactionType +
"\nTransaction Date: " + this.transactionDate;
}
}
package mainsample;
/**
*
* @author Khalid
*/
public class TransactionProcess {
public void deposit(BankAccount bankAccount, double depositAmount) {
//Get the CurrentBalance
double currentBalance = bankAccount.getCurrentBalance();
//First Argument : set the Id of transaction
//Second Argument : set the Type of Transaction
//Third Argument : set the TransactionAmount
//Fourth Argument : set the Balance Before the transaction (for record purposes)
Transaction transaction = new Transaction("Deposit", currentBalance, (int) depositAmount);
if (depositAmount <= 0) {
System.out.println("Amount to be deposited should be positive");
} else {
//Set the updated or transacted balance of bankAccount.
bankAccount.setCurrentBalance(currentBalance + depositAmount);
//then set the MoneyAfterTransaction
bankAccount.addTransaction(transaction); // adds a transaction to the bank account
System.out.println(depositAmount + " has been deposited.");
}
}
// Explanation same as above
public void withdraw(BankAccount bankAccount, double withdrawAmount) {
double currentBalance = bankAccount.getCurrentBalance();
Transaction transaction = new Transaction("Withdraw", currentBalance, (int) withdrawAmount);
if (withdrawAmount <= 0) {
System.out.println("Amount to be withdrawn should be positive");
} else {
if (currentBalance < withdrawAmount) {
System.out.println("Insufficient balance");
} else {
bankAccount.setCurrentBalance(currentBalance - withdrawAmount);
bankAccount.addTransaction(transaction); // adds a transaction to the bank account
System.out.println(withdrawAmount + " has been withdrawed,");
}
}
}
}
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package mainsample;
import java.util.*;
/**
*
* @author Khalid
*/
public class BankAccount {
private int accountId;
private String holderName;
private String holderAddress;
private String openDate;
private double currentBalance;
private List<Transaction> transactions = new ArrayList<Transaction>();
//Provide Blank Constructor
public BankAccount(){}
//Constructor with an arguments.
public BankAccount(int accountNum, String holderNam,double currentBalance, String holderAdd,String openDate) {
this.accountId = accountNum;
this.holderName = holderNam;
this.holderAddress = holderAdd;
this.openDate = openDate;
this.currentBalance = currentBalance;
}
// Always Provide Setter and Getters
public int getAccountId() {
return accountId;
}
public void setAccountId(int accountId) {
this.accountId = accountId;
}
public String getHolderName() {
return holderName;
}
public void setHolderName(String holderName) {
this.holderName = holderName;
}
public String getHolderAddress() {
return holderAddress;
}
public void setHolderAddress(String holderAddress) {
this.holderAddress = holderAddress;
}
public String getOpenDate() {
return openDate;
}
public void setOpenDate(String openDate) {
this.openDate = openDate;
}
public double getCurrentBalance() {
return currentBalance;
}
public void setCurrentBalance(double currentBalance) {
this.currentBalance = currentBalance;
}
public List<Transaction> getTransactions() {
return transactions;
}
public void setTransactions(List<Transaction> transactions) {
this.transactions = transactions;
}
public void addTransaction(Transaction transaction){
if(transactions.size() >= 6){ // test if the list has 6 or more transactions saved
transactions.remove(0); // if so, then remove the first (it's the oldest)
}
transactions.add(transaction); // the new transaction is always added, no matter how many other transactions there are already in the list
}
public String toString(){
return "\nAccount number: " + accountId +
"\nHolder's name: " + holderName +
"\nHolder's address: " + holderAddress +
"\nOpen Date: " + openDate +
"\nCurrent balance: " + currentBalance;
}
}package mainsample;
import java.util.*;
/**
*
* @author Khalid
*/
public class Bank {
private TreeMap<Integer,BankAccount> bankAccounts = new TreeMap<Integer,BankAccount>();
public TreeMap<Integer, BankAccount> getAccounts() {
return bankAccounts;
}
public void setAccounts(TreeMap<Integer, BankAccount> accounts) {
this.bankAccounts = accounts;
}
public BankAccount getAccount(Integer accountNumber){
return bankAccounts.get(accountNumber);
}
public void removeAccounts(TreeMap<Integer, BankAccount> accounts) {
this.bankAccounts = accounts;
}
}package mainsample;
import java.util.*;
/**
*
* @author Khalid
*/
public class BankProcess {
// return the Updated list of BankAccounts
public TreeMap<Integer,BankAccount> openNewAccount(TreeMap<Integer,BankAccount> bankAccounts,BankAccount bankAccount) {
//Get the List of existing bank Accounts then add the new BankAccount to it.
bankAccounts.put(bankAccount.getAccountId(), bankAccount);
return bankAccounts;
}
public TreeMap<Integer,BankAccount> removeAccount(TreeMap<Integer,BankAccount> bankAccounts,BankAccount bankAccount) {
bankAccounts.remove(bankAccount.getAccountId(), bankAccount);
return bankAccounts;
}
}
Где Ваш - банковский счет класс? – SMA
Возможно ли, что вы не получаете фактическое значение с помощью «bankAccount = bank.getAccount (accountNo) », из случаев 4 и 5? –
@almasshaikh вверх –