我想要做的是读取一个文本文件,其中包含
account_number time_of_call 分钟 10011 20:00 10.2 10011 13:23 12.3 10033 01:00 34.0
我想用这个向客户收费
每个帐户每月 10 美元的基本费用
上午 8:00 至晚上 10:00 之间开始的通话每分钟 0.10 美元,包括
所有其他时间每分钟 0.05 美元
我已经得到了答案和我想把它放进去的格式,但我得到了一个 java.util.NoSuchElementException ,我似乎无法弄清楚。
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStream;
import java.util.StringTokenizer;
import java.util.Vector;
public class PhoneBill {
Vector data;
Vector processed = new Vector();
Vector markProcessed = new Vector();
public void readFile(String inFileStr)
{
String str = "";
data = new Vector<LineItem>();
FileReader fReader;
InputStream inFileStream;
try{
fReader = new FileReader(inFileStr);
BufferedReader br=new BufferedReader(fReader);
String line;
while ((line=br.readLine())!= null){
if (line.indexOf("_") != -1)
continue;
else
if (!line.isEmpty()){
data.add(new LineItem(line.trim()));
}
}
br.close();
}
catch (Exception e){
System.out.println(e.toString());
}
}
public void processCharges()
{
System.out.println ("Invoice");
System.out.println ("--------------------------");
System.out.println ("Account " + "Amount Due ");
double total = 0.0;
double lCharges =0;
boolean done = false;
for (int j = 0; j < data.size(); j++ ){
LineItem li = (LineItem)data.get(j);
String accNum = li.getAccountNum();
if (j > 0){
done = checkProcessed(accNum);}
else
processed.add(accNum);
if (!done){
lCharges = 0;
for (int i = 0; i < data.size(); i++){
String acc = ((LineItem)data.get(i)).getAccountNum();
if (acc.equals(accNum) && !done)
lCharges += processItemCharges(accNum);
done = checkProcessed(accNum);
}
lCharges+=10.0;
System.out.format ("%s" + " $%.2f%n",accNum, lCharges);
processed.add(accNum);
total += lCharges;
}
}
System.out.println ("--------------------------");
System.out.format ("%s" + " $%.2f%n","Total", total);
}
private boolean checkProcessed(String accNum){
if (processed.contains(accNum))
return true;
else
return false;
}
private double processItemCharges(String accNum)
{
double charges = 0.0;
for (int i = 0; i < data.size(); i++)
{
if(((LineItem)data.get(i)).getAccountNum().equals(accNum))
charges += ((LineItem)data.get(i)).getCharges();
}
return charges;
}
public static void main(String[] args)
{
PhoneBill pB = new PhoneBill();
pB.readFile("input_data.txt");
pB.processCharges();
}
class LineItem{
String accNum ;
String timeOfCall;
double mins;
double amountDue;
boolean counted = false;
public LineItem(String accStr)
{
processAccount(accStr);
}
private void processAccount(String accStr){
StringTokenizer st = new StringTokenizer(accStr);
accNum = (String)st.nextElement();
timeOfCall = (String) st.nextElement();
mins = Double.parseDouble((String) st.nextElement());
if (timeOfCall.compareTo("08:00")>0 && timeOfCall.compareTo("22:00")<0)
amountDue = mins*0.10;
else
amountDue = mins*0.05;
}
public String getAccountNum()
{
return accNum;
}
public double getCharges()
{
return amountDue;
}
}
}