程序引发异常,声明“在清算帐单之前不能进行其他交易”。当客户的未付信用卡金额超过2000美元或未付时间超过45天时。假设当前日期是01/12/2015
。在java中OverLimit异常处理
- 创建一个自定义异常类
OverLimitException
,它延伸Exception
。 - 添加一个构造函数,该对象使用
Throwable
对象,使用super()
调用超类构造函数,并按问题描述中所述输出输出。
我创建了两个班一主,另一个帐户
Account.java
import java.text.*;
import java.util.*;
import java.util.concurrent.TimeUnit;
public class Account {
String accountNumber;
String accountName;
Double dueAmount;
public Account(String accountNumber, String accountName,Double dueAmount) throws ParseException {
this.accountNumber = accountNumber;
this.accountName = accountName;
this.dueAmount = dueAmount;
}
public Account() {
}
public Boolean validate(String dueDate,Double unpaid,Double amount){
DateFormat sf = new SimpleDateFormat("dd/MM/yyyy");
sf.setLenient(false);
try{
Date d = sf.parse(dueDate);
Date d1 = sf.parse("01/12/2015");
// long curDate = new Date().getTime();
long diff =d1.getTime() - d.getTime();
long daysDiff = TimeUnit.DAYS.convert(diff, TimeUnit.MILLISECONDS);
if(daysDiff > 45 || unpaid > 2000){
throw new OverLimitException("Further Transactions Not Possible until clearance of bill.");
}
}catch(Exception e){
return false;
}
return true;
}
public void display() {
System.out.println("Transaction successsfully completed.");
System.out.println("Account Number : "+this.accountNumber);
System.out.println("Account Name : "+this.accountName);
System.out.println("Unpaid Amount : "+this.dueAmount);
}
}
但我得到一个错误,说明
error: cannot find symbol
throw new OverLimitException("Further Transactions Not Possible until clearance of bill.");
^
symbol: class OverLimitException
任何一个可以请帮我解决这个问题?
并提示:你不想返回** B ** oolean,但** b ** oolean。 – GhostCat