olympics.java

Java经典例程 从外国一大学计算机教授出版物下载的代码 经典

import java.io.*;
import javagently.*;
import myutilities.*;

class Olympics {

  /* Olympic medals program    revised J M Bishop Dec 1996
   * ----------------------    Java 1.1 October 1997
   *                           updated for Stream and Filer
   *                           May 2000
   *
   * Reads in and totals medals gained by countries in an
   * Olympic Games.
   * Uses Filer to open the file.
   * Illustrates ending with an exception (the try-for sequence).
   */

  Olympics () throws IOException {
    System.out.println("**** Olympic medals ****");
    System.out.println();

    Stream in = new Stream(System.in);
    // default the file to the keyboard
    Stream fin = new Stream(System.in);

    try {
      System.out.print("What file for the medals statistics?");
      String filename = in.readString();
      fin = Filer.open(filename);
    }
    catch (FileNotFoundException e) {
      System.out.println("Five tries up");
      System.out.println("Connecting to keyboard by default");
    }

    String country;
    int gold, silver, bronze, total, all = 0;
    System.out.println("\nCountry\t\tGold\tSilver\tBronze\tTotal");

    try {
      for (;;) {
          country = fin.readString();
          gold = fin.readInt();
          silver = fin.readInt();
          bronze = fin.readInt();
          total = gold + silver + bronze;
          System.out.print(country);
          if (country.length() < 8) {
            System.out.print("\t");
          }
          System.out.println("\t"+gold+"\t"+silver+"\t"+bronze+
            "\t"+total);
          all += total;
      }
    } catch (EOFException e) {
      System.out.println(all+" medals won.");
    }
  }

  public static void main (String[] args) throws IOException {
    new Olympics ();
  }
}