import java.io.*;
public class BinRead{
public static void main(String[ ] xx)  throws IOException{
   double price;   int unit;   String desc;
   DataInputStream dis = new DataInputStream( 
                         new FileInputStream("testfile.txt") );
  double total=0;
  try {
    while (true) {    price = dis.readDouble();        dis.readChar();       // throws out the tab
        unit = dis.readInt();        dis.readChar();       // throws out the tab
        desc = dis.readUTF();   //好像沒讀走 newline
        dis.readChar();   // 把 newline 讀掉
        System.out.println("You've ordered " + unit  + " units of " + desc  + " at $" + price);
        total = total + unit * price;
    }    
  } catch (EOFException e) {
  }
  System.out.println("For a TOTAL of: $" + total);     
  dis.close();
}//main
}