java项目贷款NullPointerException

有人能帮我解决这个异常吗？结果出来了，但仍然得到了错误。有四个其他类连接到它

public class CreateLoans {
    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);
        int num;
        int term;
        int choice;
        String name;
        double amount;
        Loan[] w = new Loan[5];
        for (int i = 0; i < 1; i++) {
            System.out.println("Choose Loan Type: 1 Business Loan 2 Personal Loan");
            choice = s.nextInt();
            if (choice == 1) {
                System.out.print("Enter Loan Number: ");
                num = s.nextInt();
                System.out.print("Enter Last Name: ");
                s.nextLine();
                name = s.nextLine();
                System.out.print("Enter Loan Amount: ");
                amount = s.nextDouble();
                System.out.print("Enter Number of Terms: ");
                term = s.nextInt();
                w[i] = new BusinessLoan(num, name, amount, term);
            } else if (choice == 2) {
                System.out.print("Enter Loan Number: ");
                num = s.nextInt();
                System.out.print("Enter Last Name: ");
                s.nextLine();
                name = s.nextLine();
                System.out.print("Enter Loan Amount: ");
                amount = s.nextDouble();
                System.out.print("Enter Number of Terms: ");
                term = s.nextInt();

                w[i] = new PersonalLoan(num, name, amount, term);
            } else {
                System.out.println("Error, Please Enter 1 Or 2");
            }
        }
        for (int i = 0; i < w.length; i++) {
            System.out.println(w[i].toString());
        }
    }

}

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不确定要执行什么操作：由于for循环是：

for (int i = 0; i < 1; i++) {// the code inside this loop only execute one time
   ...
}

当我为1时，w[i]w[1]将为null，因此当您调用w[i].toString时，您将得到一个

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快速修复应更改为int i=0；i<1；i++to表示int i=0；i中间仍然有一个空值。如果你在你的CyteleloAs类的第56行中突出显示了什么代码，这将有帮助。

for (int i = 0; i < w.length; i++) {
    System.out.println(w[i].toString());
}