Java代码无法编译

Question

我有这段代码但是当我尝试编译它时，我只是收到错误。谁能发现sytnax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

Maybe the right code is:

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;
}

Answer 2

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