lab6/BaseballMap.java

   1 /*
   2  * BaseballMap.java
   3  *
   4  * Version:
   5  *     $Id: BaseballMap.java,v 1.1 2008/04/21 15:00:32 rmh3093 Exp rmh3093 $
   6  *
   7  * Revisions:
   8  *     $Log: BaseballMap.java,v $
   9  *     Revision 1.1  2008/04/21 15:00:32  rmh3093
  10  *     Initial revision
  11  *
  12  */
  13
  14 import java.io.FileNotFoundException;
  15 import java.io.FileReader;
  16 import java.io.IOException;
  17 import java.util.Scanner;
  18 import java.util.HashMap;
  19
  20 /**
  21  * reads a list of Major League Baseball home run champions, removes
  22  * duplicates, and displaysplayer information in a sorted order and allow for
  23  * modifications
  24  *
  25  * @author Ryan Hope
  26  *
  27  */
  28 public class BaseballMap {
  29
  30         HashMap<String,Player> players = new HashMap<String,Player>();
  31
  32         /**
  33          * create new baseballmap
  34          */
  35         public BaseballMap(String filename) {
  36                 try {
  37                         FileReader file = new FileReader(filename);
  38                         Scanner input = new Scanner(file);
  39                         while (input.hasNext()) {
  40                                 String year = input.next();
  41                                 String name = input.next() + " " + input.next();
  42                                 String team = input.next() + " " + input.next();
  43                                 int homeruns = Integer.parseInt(input.next());
  44                                 Player player = new Player(year,name,team,homeruns);
  45                                 players.put(year,player);
  46                         }
  47                         input.close();
  48                         file.close();
  49                 } catch (FileNotFoundException e) {
  50                         System.err.println("File " + filename + " not found!");
  51                 } catch (IOException e) {
  52                         e.printStackTrace();
  53                 }
  54                 for (String key : players.keySet()) {
  55                         System.out.println(players.get(key));
  56                 }
  57                 Scanner command = new Scanner(System.in);
  58                 while (true) {
  59                         System.out.print(">");
  60                         String[] cmd = command.nextLine().split(" ");
  61                         if (cmd[0].equals("quit")) {
  62                                 System.exit(0);
  63                         } else if (cmd[0].equals("get")) {
  64                                 if (cmd.length==2) {
  65                                         Player info = players.get(cmd[1]);
  66                                         if (info != null) {
  67                                                 System.out.println(info.toString());
  68                                         } else {
  69                                                 System.out.println("No entry is found.");
  70                                         }
  71                                 } else {
  72                                         System.out.println("get needs a year");
  73                                 }
  74                         } else if (cmd[0].equals("put")) {
  75                                 if (cmd.length==7) {
  76                                         Player player = new Player(cmd[1], cmd[2] + " " + cmd[3],
  77                                                         cmd[4] + " " + cmd[5], Integer.parseInt(cmd[6]));
  78                                         Player result = players.put(cmd[1], player);
  79                                         if (result == null) {
  80                                                 System.out.println(player.getTeam() + "'s " +
  81                                                                 player.getName() + " in " + player.getYear() +
  82                                                                 " has been added.");
  83                                         } else {
  84                                                 System.out.println("The key already exists in the " +
  85                                                                 "map.");
  86                                         }
  87                                 }
  88                         } else if (cmd[0].equals("remove")) {
  89                                 if (cmd.length==2) {
  90                                         Player result = players.remove(cmd[1]);
  91                                         if (result != null) {
  92                                                 System.out.println(result.getTeam() + "'s " +
  93                                                                 result.getName() + " in " + result.getYear() +
  94                                                                 " has been removed.");
  95                                         }
  96                                 } else {
  97                                         System.out.println("remove needs a year");
  98                                 }
  99                         } else if (cmd[0].equals("list")) {
 100                                 for (String key : players.keySet()) {
 101                                         System.out.println(players.get(key));
 102                                 }
 103                         }
 104                 }
 105         }
 106
 107         /**
 108          * @param args
 109          */
 110         public static void main(String[] args) {
 111                 if (args.length != 1) {
 112                         System.out.println("Usage: java BaseballMap [datafile]");
 113                         System.exit(0);
 114                 }
 115                 new BaseballMap(args[0]);
 116         }
 117
 118 }