import java.io.*;

class Students4
{
//  Read a number of Student records from a file, store them in an array
//  Filter out those whose average mark is below an input figure

   static final int MAXSTUDENTS=100;
   static final int MAXMARKS=30;

   public static void main(String[] args) throws IOException
   {
    String filename;
    Student [] data;
    int count=0;
    double passMark;
    BufferedReader in = Text.open(System.in),inFile;
    for(;;)
        try
           {
            System.out.print("\nEnter file name to read from: ");
            filename=Text.readString(in);
            inFile=Text.open(filename);
            break;
           }
        catch(FileNotFoundException e)
           {
            System.out.println("No file of that name found");
           }
    data = new Student[MAXSTUDENTS];
    try
       {
        for(;;)
           try
              {
               data[count++] = Student.read(inFile);
              }
           catch(PersonException e)
              {
               System.out.println(e.getMessage());
               count--;
              }
       }
    catch(IOException e)
       {
       }
    catch(ArrayIndexOutOfBoundsException e)
       {
        System.out.print("Maximum number of students ("+MAXSTUDENTS);
        System.out.println(") exceeded");
       }
    count--;
    System.out.println("\nThe records are:\n");
    for(int i=0;i<count;i++)
       System.out.println(data[i]);
    System.out.print("Enter pass mark: ");
    passMark=Text.readDouble(in);
    PeopleFilter myFilter = 
      new PeopleFilter(new StudentChooseByHighAverageMark(passMark));
    count=myFilter.filter(data,count);
    System.out.println("\nThe records of those who have passed are:\n");
    for(int i=0;i<count;i++)
       System.out.println(data[i]);
   }

}