的阵列我有以下测试类NullPointerException异常的对象
public class Driver
{
public static void main(String [] args)
{
BankAccount[] b1 = {new BankAccount(200), new BankAccount(300), new BankAccount(250), new BankAccount(300), new BankAccount(200)};
BankAccountGroup bag = new BankAccountGroup(b1);
}
而且BankAccountGroup:
public class BankAccountGroup
{
private BankAccount bank[];
public BankAccountGroup(BankAccount[]b)
{
for(int i =0; i<5;i++)
{
bank[i] = b[i];
}
}
这些都只是整个代码的片段。我得到这两行的nullpointerexception: - bank [i] = b [i]; - BankAccountGroup bag = new BankAccountGroup(b1); 请帮忙
非常感谢你 – user3071135
你能把这个标记为答案吗? IMTRYINGTOGETSOMEPOINTS。 – Umibozu