Java 代码无法编译

Question

我有这段代码，但是当我尝试编译它时，我收到了错误。谁能发现语法错误，或者我做错了什么？

public double getTotalBalance(ArrayList<String> accounts)
{
double sum = 0;
while (studentNames.size() > 0)
{
BankAccount account = accounts.remove(O); // Not recommended
sum = sum + account.getBalance();
}
return sum;
}

Answer 1

accounts.remove(O) 似乎有问题。当您传递 ArrayList<String> 个帐户时，从这里帐户 Arraylist 仅包含 strings?。

Answer 2

也许正确的代码是：

public double getTotalBalance(ArrayList<BankAccount> accounts)
{
    double sum = 0;
    while (accounts.size() > 0)
    {
         BankAccount account = accounts.remove(0); // Not recommended
         sum = sum + account.getBalance();
    }
    return sum;
}

Java 代码无法编译

Java code will not compile

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