关于java：修改克隆对象

modifying cloned objects

我正在尝试修改帐户对象，但是之后更改似乎不会出现在原始列表中。也许有人能找出错误。

见下面的代码：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

if(aBank.getAccount(number)!=null){
System.out.println("Account information is listed below");
System.out.println(aBank.getAccount(number).toString());
System.out.println("Modify first name y or n");
answer=keyboard.nextLine();
if(answer.equals("Y")||answer.equals("y")){
System.out.println("Enter first name:");
firstName=keyboard.nextLine();
aBank.getAccount(number).getCustomer().setFirstName(firstName);

}
System.out.println("Modify last name y or n");
answer=keyboard.nextLine();
if(answer.equals("Y")|| answer.equals("y")){
System.out.println("Enter last name:");
lastName=keyboard.nextLine();
aBank.getAccount(number).getCustomer().setLastName(lastName);
}

}

else{
System.out.println("Account not found");
}

注意：getaccount(number)返回帐户的一个深度复制副本，getcustomer也返回一个深度复制副本。

GetAccount的内容

1
2
3
4
5
6
7
8
9
10
11
12
13

public Account getAccount(long accountNumber ) throws Exception {
boolean found=false;
for(int i=0;i<accounts.size();i++){
if(accounts.get(i).getAccountNumber().compareTo(accountNumber)==0){
found=true;
return accounts.get(i).clone();
}
}
if (!found){
return null;
}
return null;
}