小时。我在这段代码上收到错误，并且不知道该怎么做。任何人都可以告诉我问题是什么以及如何解决它。
错误： 没有为Transaction找到合适的构造函数（int，String，double，double（
代码加下划线：
Transaction transaction = new Transaction(bankAccount.getTransactions().size(), "Deposit", depositAmount, currentBalance);
/*
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* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
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(bankAccount.getTransactions().size(), "Deposit", depositAmount, currentBalance);
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(bankAccount.getTransactions().size(), "Withdraw", withdrawAmount, currentBalance);
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System.out.println("Amount to be withdrawn should be positive");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,");
}
}
}
}
package mainsample;
/**
*
* @author Khalid
*/
public class Transaction {
private String transactionType;
private double transactionAmount;
private int transactionDate;
public Transaction() {}
public Transaction( String transactionType, int transactionDate, double transactionAmount) {
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 " Transaction Amount : "+ this.transactionAmount +
" Transaction Type : " + this.transactionType +
" Transaction Date: " + this.transactionDate;
}
}
/*
* 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;
}
}
答案 0 :(得分：6)
您正在呼叫Transaction(bankAccount.getTransactions().size(), "Deposit", depositAmount, currentBalance);这意味着您正在通过four arguments。
但您创建的Transaction( String transactionType, int transactionDate, double transactionAmount)仅接受three arguments。
根据您的需要，我猜您可能需要在构造函数定义中添加一个参数来存储值Deposit，或者在调用构造函数时将其删除（如果您不需要它）。
如果你想要三个参数：
更改程序中的以下代码行：
Transaction transaction = new Transaction(bankAccount.getTransactions().size(), depositAmount, currentBalance);
根据我的评论如下：
您需要验证要传递的所有参数的数据类型。它肯定意味着需要String并且你传递一个int。我怀疑它是否与 bankAccount.getTransactions（）。size（）参数有关，因为 size（）应该为您提供 int 值但是在构造函数中，您需要 String transactionType 字符串值。您必须根据需要更改类型。 并提示将int值转换为String，您可以使用String.valueOf（）;
答案 1 :(得分：3)
你有的构造函数
Transaction(String, int, double);
但你正试图给予
Transaction(int, String, int, double);
修改以下内容，
Transaction transaction = new Transaction("Deposit", depositAmount, currentBalance);
而不是
Transaction transaction = new Transaction(bankAccount.getTransactions().size(), "Deposit", depositAmount, currentBalance);
使用以下内容替换您的Transaction类。
public class Transaction {
private String transactionType;
private double transactionAmount;
private double balanceAmount;
private Date transactionDate;
public Transaction() {}
public Transaction( String transactionType, Date transactionDate, double transactionAmount, double balanceAmount) {
this.transactionType = transactionType;
this.transactionAmount = transactionAmount;
this.transactionDate = transactionDate;
this.balanceAmount = balanceAmount;
}
public Transaction( String transactionType, double transactionAmount, double balanceAmount) {
this.transactionType = transactionType;
this.transactionAmount = transactionAmount;
this.balanceAmount = balanceAmount;
}
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 " Transaction Amount : "+ this.transactionAmount +
" Transaction Type : " + this.transactionType +
" Balance Amount : " + this.balanceAmount +
" Transaction Date: " + this.transactionDate;
}
/**
* @return the balanceAmount
*/
public double getBalanceAmount()
{
return balanceAmount;
}
/**
* @param balanceAmount the balanceAmount to set
*/
public void setBalanceAmount(double balanceAmount)
{
this.balanceAmount = balanceAmount;
}
}
打印交易方法
public void printTransaction(int accountNumberId)
{
List<Transaction> transactionList = getTransactions(accountNumberId); // this getTransactions() you have to create and fetch all the transaction listed by the holderName
for(Transaction transaction : transactionList)
{
System.out.println("Transaction Amount : "+transaction.getTransactionAmount());
System.out.println("Transaction Date : "+transaction.getTransactionDate());
System.out.println("Transaction Type : "+transaction.getTransactionType());
}
}
答案 2 :(得分：0)
错误原因是您有以下构造函数用于事务类：
public Transaction() {}
public Transaction( String transactionType, int transactionDate, double transactionAmount)
你传递的4个参数不符合其中任何一个。而是尝试：
Transaction transaction = new Transaction("Deposit", 0, depositAmount);
由于bankAccount具有currentBalance详细信息，因此您无需传递这些信息。此外，没有必要在您的情况下传递事务的大小，因为我在您的代码中没有看到任何目的。