这是用于添加新帐户的。
private void btnSaveAActionPerformed(java.awt.event.ActionEvent evt)
{
BankAccount account = new BankAccount();
ButtonGroup bg = new ButtonGroup();
bg.add(rad_savings);
bg.add(rad_checking);
account.setAccountName(txt_accountname.getText());
account.setAccountNo(txt_accountnumber.getText());
account.setBalance(Double.parseDouble(txt_initialbalance.getText()));
list.add(account);
if(rad_savings.isSelected()){
//account = new SavingsAccount();
account.setAccountType("Savings");
list.add(account);
}
else
{
//account = new CheckingAccount();
account.setAccountType("Checking");
list.add(account);
}
}
我还有储蓄和支票类(class)
节省:
public class SavingsAccount extends BankAccount {
public SavingsAccount(){
};
public SavingsAccount(String accountNo, String accountName, double initBalance) {
super(accountNo, accountName, initBalance);
}
public SavingsAccount(String accountNo, String accountName) {
super(accountNo, accountName);
}
}
检查:
public class CheckingAccount extends BankAccount {
private double overdraftProtection;
public CheckingAccount(){
};
public CheckingAccount(String accountNo, String accountName,
double initBalance) {
super(accountNo, accountName, initBalance);
}
public CheckingAccount(String accountNo, String accountName) {
super(accountNo, accountName);
}
public double getOverdraftProtection() {
return overdraftProtection;
}
public void setOverdraftProtection(double overdraftProtection) {
this.overdraftProtection = overdraftProtection;
}
public void withdraw(double amount) {
// TODO: code for withdrawal
}
}
在我的 BankAccount 类中,我有这个:
public class BankAccount {
private String accountNo;
private String accountName;
protected double balance;
private String accountType;
public String toString(){
return "Account name: " + accountName + "" + System.getProperty("line.separator") +
"Account Number: " + accountNo + "" +System.getProperty("line.separator")+
"Balance: " + balance + "" + System.getProperty("line.separator")+
"Account Type: " + accountType;
}
当我尝试它时,它会复制数据集: 例如:我输入的账户名称:John,账户号码:101,初始余额:500,账户类型:储蓄。
它将输出如下:
帐户名:约翰 帐号:101 初始余额:500 账户类型: 储蓄 帐户名称: 约翰 帐号:101 初始余额:500 账户类型:储蓄
我找不到问题所在。
最佳答案
在btnSaveAActionPerformed
中,您调用list.add(account);
,然后检查该帐户是支票帐户还是储蓄帐户。在这两个语句的 if
语句中,您执行另一个 list.add(account);
这导致帐户双重添加。
关于java - 打印重复的数据集,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16830597/