Rename 'CT326_Programming_III' to 'CT326: Programming III'
This commit is contained in:
@ -0,0 +1,81 @@
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.time.LocalDate;
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/**
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* class representing a player's achievement
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*/
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public class Achievement {
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private String achievementName;
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private String description;
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private LocalDate dateOfAward;
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/**
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* constructor for the Achievement class
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* @param achievementName a String representation of the name of the Achievement
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* @param description a String describing the Achievement
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* @param dateOfAward a LocalDate representing the date that the Achievement was awarded
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*/
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public Achievement(String achievementName, String description, LocalDate dateOfAward) {
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this.achievementName = achievementName;
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this.description = description;
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this.dateOfAward = dateOfAward;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj instanceof Achievement) {
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Achievement toCompare = (Achievement) obj;
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if (!achievementName.equals(toCompare.achievementName)) {
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return false;
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}
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if (!description.equals(toCompare.description)) {
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return false;
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}
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if (!dateOfAward.equals(toCompare.dateOfAward)) {
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return false;
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}
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return true;
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}
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else { return false; }
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}
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/**
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* getter method for the achievementName field
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* @return a String representation of the name of the Achievement
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*/
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public String getAchievementName() { return achievementName; }
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/**
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* setter method for the achievementName field
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* @param achievementName a String representation of the name of the Achievement
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*/
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public void setAchievementName(String achievementName) { this.achievementName = achievementName; }
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/**
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* getter method for the description field
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* @return a String describing the Achievement
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*/
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public String getDescription() { return description; }
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/**
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* setter method for the description field
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* @param description a String describing the Achievement
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*/
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public void setDescription(String description) { this.description = description; }
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/**
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* getter method for the dateOfAward field
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* @return a LocalDate representing the date that the Achievement was awarded
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*/
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public LocalDate getDateOfAward() { return dateOfAward; }
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/**
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* setter method for the dateOfAward field
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* @param dateOfAward a LocalDate representing the date that the Achievement was awarded
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*/
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public void setDateOfAward(LocalDate dateOfAward) { this.dateOfAward = dateOfAward; }
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}
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@ -0,0 +1,260 @@
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/**
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* enum for each ISO 3166 Alpha-2 country Code
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*/
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public enum Country {
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// Explanation of how this data was sourced:
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// the following ISO 3166 Alpha-2 Codes were taken from the CSV file found here: https://pkgstore.datahub.io/core/country-list/data_csv/data/d7c9d7cfb42cb69f4422dec222dbbaa8/data_csv.csv
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// the CSV file was cleaned to have UNIX line endings (as it had Windows line endings, and I am on GNU/Linux) with the command `tr -d '\r' < data_csv.csv > clean_data.csv `
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// they were then parsed & read into this Java source file with the Vim / GNU AWK command `:read !awk -F',' '{gsub(/\"/, ""); print $NF ",\t// " $1}' clean_data.csv`
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// finally, the block was indented in Vim and a `;` appended to the last value
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AF, // Afghanistan
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AX, // Åland Islands
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AL, // Albania
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DZ, // Algeria
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AS, // American Samoa
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AD, // Andorra
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AO, // Angola
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AI, // Anguilla
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AQ, // Antarctica
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AG, // Antigua and Barbuda
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AR, // Argentina
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AM, // Armenia
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AW, // Aruba
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AU, // Australia
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AT, // Austria
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AZ, // Azerbaijan
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BS, // Bahamas
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BH, // Bahrain
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BD, // Bangladesh
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BB, // Barbados
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BY, // Belarus
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BE, // Belgium
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BZ, // Belize
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BJ, // Benin
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BM, // Bermuda
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BT, // Bhutan
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BO, // Bolivia
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BQ, // Bonaire
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BA, // Bosnia and Herzegovina
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BW, // Botswana
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BV, // Bouvet Island
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BR, // Brazil
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IO, // British Indian Ocean Territory
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BN, // Brunei Darussalam
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BG, // Bulgaria
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BF, // Burkina Faso
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BI, // Burundi
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KH, // Cambodia
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CM, // Cameroon
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CA, // Canada
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CV, // Cape Verde
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KY, // Cayman Islands
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CF, // Central African Republic
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TD, // Chad
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CL, // Chile
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CN, // China
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CX, // Christmas Island
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CC, // Cocos (Keeling) Islands
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CO, // Colombia
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KM, // Comoros
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CG, // Congo
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CD, // Congo
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CK, // Cook Islands
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CR, // Costa Rica
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CI, // Côte d'Ivoire
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HR, // Croatia
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CU, // Cuba
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CW, // Curaçao
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CY, // Cyprus
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CZ, // Czech Republic
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DK, // Denmark
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DJ, // Djibouti
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DM, // Dominica
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DO, // Dominican Republic
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EC, // Ecuador
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EG, // Egypt
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SV, // El Salvador
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GQ, // Equatorial Guinea
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ER, // Eritrea
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EE, // Estonia
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ET, // Ethiopia
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FK, // Falkland Islands (Malvinas)
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FO, // Faroe Islands
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FJ, // Fiji
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FI, // Finland
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FR, // France
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GF, // French Guiana
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PF, // French Polynesia
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TF, // French Southern Territories
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GA, // Gabon
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GM, // Gambia
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GE, // Georgia
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DE, // Germany
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GH, // Ghana
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GI, // Gibraltar
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GR, // Greece
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GL, // Greenland
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GD, // Grenada
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GP, // Guadeloupe
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GU, // Guam
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GT, // Guatemala
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GG, // Guernsey
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GN, // Guinea
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GW, // Guinea-Bissau
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GY, // Guyana
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HT, // Haiti
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HM, // Heard Island and McDonald Islands
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VA, // Holy See (Vatican City State)
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HN, // Honduras
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HK, // Hong Kong
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HU, // Hungary
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IS, // Iceland
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IN, // India
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ID, // Indonesia
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IR, // Iran
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IQ, // Iraq
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IE, // Ireland
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IM, // Isle of Man
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IL, // Israel
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IT, // Italy
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JM, // Jamaica
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JP, // Japan
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JE, // Jersey
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JO, // Jordan
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KZ, // Kazakhstan
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KE, // Kenya
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KI, // Kiribati
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KP, // Korea
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KR, // Korea
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KW, // Kuwait
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KG, // Kyrgyzstan
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LA, // Lao People's Democratic Republic
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LV, // Latvia
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LB, // Lebanon
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LS, // Lesotho
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LR, // Liberia
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LY, // Libya
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LI, // Liechtenstein
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LT, // Lithuania
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LU, // Luxembourg
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MO, // Macao
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MK, // Macedonia
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MG, // Madagascar
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MW, // Malawi
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MY, // Malaysia
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MV, // Maldives
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ML, // Mali
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MT, // Malta
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MH, // Marshall Islands
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MQ, // Martinique
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MR, // Mauritania
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MU, // Mauritius
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YT, // Mayotte
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MX, // Mexico
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FM, // Micronesia
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MD, // Moldova
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MC, // Monaco
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MN, // Mongolia
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ME, // Montenegro
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MS, // Montserrat
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MA, // Morocco
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MZ, // Mozambique
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MM, // Myanmar
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NA, // Namibia
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NR, // Nauru
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NP, // Nepal
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NL, // Netherlands
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NC, // New Caledonia
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NZ, // New Zealand
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NI, // Nicaragua
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NE, // Niger
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NG, // Nigeria
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NU, // Niue
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NF, // Norfolk Island
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MP, // Northern Mariana Islands
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NO, // Norway
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OM, // Oman
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PK, // Pakistan
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PW, // Palau
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PS, // Palestine
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PA, // Panama
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PG, // Papua New Guinea
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PY, // Paraguay
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PE, // Peru
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PH, // Philippines
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PN, // Pitcairn
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PL, // Poland
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PT, // Portugal
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PR, // Puerto Rico
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QA, // Qatar
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RE, // Réunion
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RO, // Romania
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RU, // Russian Federation
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RW, // Rwanda
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BL, // Saint Barthélemy
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SH, // Saint Helena
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KN, // Saint Kitts and Nevis
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LC, // Saint Lucia
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MF, // Saint Martin (French part)
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PM, // Saint Pierre and Miquelon
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VC, // Saint Vincent and the Grenadines
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WS, // Samoa
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SM, // San Marino
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ST, // Sao Tome and Principe
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SA, // Saudi Arabia
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SN, // Senegal
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RS, // Serbia
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SC, // Seychelles
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SL, // Sierra Leone
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SG, // Singapore
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SX, // Sint Maarten (Dutch part)
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SK, // Slovakia
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SI, // Slovenia
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SB, // Solomon Islands
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SO, // Somalia
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ZA, // South Africa
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GS, // South Georgia and the South Sandwich Islands
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SS, // South Sudan
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ES, // Spain
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LK, // Sri Lanka
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SD, // Sudan
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SR, // Suriname
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SJ, // Svalbard and Jan Mayen
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SZ, // Swaziland
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SE, // Sweden
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CH, // Switzerland
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SY, // Syrian Arab Republic
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TW, // Taiwan
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TJ, // Tajikistan
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TZ, // Tanzania
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TH, // Thailand
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TL, // Timor-Leste
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TG, // Togo
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TK, // Tokelau
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TO, // Tonga
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TT, // Trinidad and Tobago
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TN, // Tunisia
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TR, // Turkey
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TM, // Turkmenistan
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TC, // Turks and Caicos Islands
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TV, // Tuvalu
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UG, // Uganda
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UA, // Ukraine
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AE, // United Arab Emirates
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GB, // United Kingdom
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US, // United States
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UM, // United States Minor Outlying Islands
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UY, // Uruguay
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UZ, // Uzbekistan
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VU, // Vanuatu
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VE, // Venezuela
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VN, // Viet Nam
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VG, // Virgin Islands
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VI, // Virgin Islands
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WF, // Wallis and Futuna
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EH, // Western Sahara
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YE, // Yemen
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ZM, // Zambia
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ZW; // Zimbabwe
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}
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@ -0,0 +1,184 @@
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import java.io.*;
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import java.time.LocalDate;
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import java.time.format.DateTimeFormatter;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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/**
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* class to represent a player
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*/
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public class Player implements Serializable {
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private String id;
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private String username;
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private Country country;
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private LocalDate joinDate;
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private List<Achievement> achievements;
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private static final String serializeAchievementsTo = "achievements.csv";
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/**
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* constructor for the Player class
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* @param id a String representing the player's ID
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* @param username a String representing the player's username
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* @param country a Country object representing the country to which the player belongs
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* @param joinDate a LocalDate object representing the date that the player joined the team
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* @param achievements a List of Achievement objects awarded to the player
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*/
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public Player(String id, String username, Country country, LocalDate joinDate, List<Achievement> achievements) {
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this.id = id;
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this.username = username;
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this.country = country;
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this.joinDate = joinDate;
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this.achievements = achievements;
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}
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/**
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* overridden method to compare two objects for equality
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* @param obj the object to be compared
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* @return boolean - true if the objects have all the same fields equals, false otherwise
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*/
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@Override
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public boolean equals(Object obj) {
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if (obj instanceof Player) {
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Player toCompare = (Player) obj;
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if (!id.equals(toCompare.id)) {
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return false;
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}
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if (!username.equals(toCompare.username)) {
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return false;
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}
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if (!country.equals(toCompare.country)) {
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return false;
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}
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if (!joinDate.equals(toCompare.joinDate)) {
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return false;
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}
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if (!achievements.equals(toCompare.achievements)) {
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return false;
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} // note that if the lists are in different orders, this will return false
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return true;
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}
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else { return false; }
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}
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/**
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* method to deserialize the Player object and to read in its achievements from a CSV file
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* @param out ObjectOutputStream
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* @throws IOException
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*/
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@Serial
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private void writeObject(ObjectOutputStream out) throws IOException {
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// would be inappropriate to catch IOExceptions here - should be caught in the code attempting to serialize the object
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out.writeObject(id);
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out.writeObject(username);
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out.writeObject(country);
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out.writeObject(joinDate);
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// deliberate design choice here to not use the writeObject method of the Achievement class
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// serializing Achievements in the context of a Player's list of Achievements should be treated differently to serializing, say, a single, isolated Achievement
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// there may be times when we want to serialize an Achievement without reference to a Player, without a CSV file
|
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// writing out Achievements to CSV file
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FileWriter writer = new FileWriter(serializeAchievementsTo, true); // append set to true
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for (Achievement achievement : achievements) {
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writer.write(id + "," + achievement.getAchievementName() + "," + achievement.getDescription() + "," + achievement.getDateOfAward().toString() + "\n");
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}
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writer.close();
|
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}
|
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|
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/**
|
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* method to serialize the Player object and to write out its achievements to a CSV file
|
||||
* @param in ObjectInputStream
|
||||
* @throws IOException
|
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* @throws ClassNotFoundException
|
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*/
|
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@Serial
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private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
|
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// would be inappropriate to catch exceptions here - should be caught in the code attempting to de-serialize the object
|
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id = (String) in.readObject();
|
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username = (String) in.readObject();
|
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country = (Country) in.readObject();
|
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joinDate = (LocalDate) in.readObject();
|
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achievements = new ArrayList<>();
|
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|
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FileReader fileReader = new FileReader(serializeAchievementsTo);
|
||||
BufferedReader bufferedReader = new BufferedReader(fileReader);
|
||||
|
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String line;
|
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while ((line = bufferedReader.readLine()) != null) {
|
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String[] cols = line.split(",");
|
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|
||||
// only adding to list of achievements if the player ids match
|
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if (cols[0].equals(id)) {
|
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achievements.add(new Achievement(cols[1], cols[2], LocalDate.parse(cols[3], DateTimeFormatter.ofPattern("yyyy-MM-dd"))));
|
||||
}
|
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}
|
||||
bufferedReader.close();
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* getter method for the ID field
|
||||
* @return a String representing the player's ID
|
||||
*/
|
||||
public String getId() { return id; }
|
||||
|
||||
/**
|
||||
* setter method for the id field
|
||||
* @param id String representing the player's ID
|
||||
*/
|
||||
public void setId(String id) { this.id = id; }
|
||||
|
||||
|
||||
/**
|
||||
* getter method for the username field
|
||||
* @return a String representing the player's username
|
||||
*/
|
||||
public String getUsername() { return username; }
|
||||
|
||||
/**
|
||||
* setter method for the username field
|
||||
* @param username String representing the player's username
|
||||
*/
|
||||
public void setUsername(String username) { this.username = username; }
|
||||
|
||||
/**
|
||||
* getter method for the country field
|
||||
* @return a Country object
|
||||
*/
|
||||
public Country getCountry() { return country; }
|
||||
|
||||
/**
|
||||
* setter method for the country field
|
||||
* @param country a Country object
|
||||
*/
|
||||
public void setCountry(Country country) { this.country = country; }
|
||||
|
||||
/**
|
||||
* getter method for the joinDate field
|
||||
* @return a LocalDate representing the date when the player joined the team
|
||||
*/
|
||||
public LocalDate getJoinDate() { return joinDate; }
|
||||
|
||||
/**
|
||||
* setter method for the joinDate field
|
||||
* @param joinDate LocalDate representing the date when the player joined the team
|
||||
*/
|
||||
public void setJoinDate(LocalDate joinDate) { this.joinDate = joinDate; }
|
||||
|
||||
/**
|
||||
* getter method for the achievements field
|
||||
* @return a list of Achievement objects
|
||||
*/
|
||||
public List<Achievement> getAchievements() { return achievements; }
|
||||
|
||||
/**
|
||||
* setter method for the achievements field
|
||||
* @param achievements a list of Achievement objects
|
||||
*/
|
||||
public void setAchievements(List<Achievement> achievements) { this.achievements = achievements; }
|
||||
}
|
||||
@ -0,0 +1,155 @@
|
||||
import static org.junit.jupiter.api.Assertions.*;
|
||||
import org.junit.jupiter.api.*;
|
||||
import java.io.*;
|
||||
import java.time.LocalDate;
|
||||
import java.util.ArrayList;
|
||||
|
||||
/**
|
||||
* JUnit tests to test the serialization ability of the Player class
|
||||
*/
|
||||
public class TestSerialization {
|
||||
// assuming that the instruction "Use a test-driven development approach to implement the serialization of Player objects" only applies to the serialization, and not the other functionality
|
||||
|
||||
/**
|
||||
* method that runs after each test and deletes the achievements.csv and players.ser files
|
||||
*/
|
||||
@AfterEach
|
||||
void deleteFiles() {
|
||||
File achievementsFile = new File("achievements.csv");
|
||||
achievementsFile.delete();
|
||||
|
||||
File playersFile = new File("player.ser");
|
||||
playersFile.delete();
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* test that creates 5 player objects, serializes them, and compares them to the deserialized objects
|
||||
* @throws IOException
|
||||
* @throws ClassNotFoundException
|
||||
*/
|
||||
@Test
|
||||
void serializeFivePlayers() throws IOException, ClassNotFoundException {
|
||||
// deliberately not catching potential IOExceptions - we want the tests to fail if these are thrown
|
||||
FileOutputStream players_file = new FileOutputStream("players.ser");
|
||||
ObjectOutputStream players_out = new ObjectOutputStream(players_file);
|
||||
ObjectInputStream players_in = new ObjectInputStream(new FileInputStream("players.ser"));
|
||||
|
||||
ArrayList<Player> players = new ArrayList<>(); // array of players to be serialized
|
||||
|
||||
// creating some unique players
|
||||
// player 0
|
||||
players.add(new Player("0", "player0", Country.IE, LocalDate.now(),
|
||||
new ArrayList<>() {{
|
||||
add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6)));
|
||||
}}
|
||||
));
|
||||
|
||||
// player 1
|
||||
players.add(new Player("1", "player1", Country.JP, LocalDate.now(),
|
||||
new ArrayList<>() {{
|
||||
add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6)));
|
||||
add(new Achievement("Another Award", "An award for something else", LocalDate.of(1996, 7, 6)));
|
||||
}}
|
||||
));
|
||||
|
||||
// player 2
|
||||
players.add(new Player("2", "player2", Country.UA, LocalDate.now(),
|
||||
new ArrayList<>() {{
|
||||
add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6)));
|
||||
add(new Achievement("Another Award", "An award for something else", LocalDate.of(1996, 7, 6)));
|
||||
add(new Achievement("Yet Another Award", "An award for something else entirely", LocalDate.of(2023, 8, 6)));
|
||||
}}
|
||||
));
|
||||
|
||||
// player 3
|
||||
players.add(new Player("3", "player3", Country.AD, LocalDate.now(),
|
||||
new ArrayList<>() {{
|
||||
add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6)));
|
||||
add(new Achievement("Another Award", "An award for something else", LocalDate.of(1996, 7, 6)));
|
||||
add(new Achievement("Yet Another Award", "An award for something else entirely", LocalDate.of(2023, 8, 6)));
|
||||
add(new Achievement("A fourth award", "An award that comes after three previous awards", LocalDate.of(2022, 8, 3)));
|
||||
}}
|
||||
));
|
||||
|
||||
// player 4
|
||||
players.add(new Player("4", "player4", Country.DE, LocalDate.now(),
|
||||
new ArrayList<>() {{
|
||||
add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6)));
|
||||
add(new Achievement("Another Award", "An award for something else", LocalDate.of(1996, 7, 6)));
|
||||
add(new Achievement("Yet Another Award", "An award for something else entirely", LocalDate.of(2023, 8, 6)));
|
||||
add(new Achievement("A fourth award", "An award that comes after three previous awards", LocalDate.of(2022, 8, 3)));
|
||||
add(new Achievement("The final award", "The last award anyone will ever get", LocalDate.of(2030, 12, 25)));
|
||||
}}
|
||||
));
|
||||
|
||||
for (Player player : players) {
|
||||
players_out.writeObject(player);
|
||||
}
|
||||
|
||||
// looping over each player and comparing it to the de-serialized player
|
||||
// doing this in a separate loop to separate writing and reading
|
||||
for (Player player : players) {
|
||||
// deliberately not catching exceptions here - we want the test to fail if exceptions are thrown
|
||||
Player dplayer = (Player) players_in.readObject();
|
||||
assertEquals(player, dplayer);
|
||||
}
|
||||
|
||||
players_out.close();
|
||||
players_file.close();
|
||||
}
|
||||
|
||||
/**
|
||||
* test the equals() method of the Player class
|
||||
*/
|
||||
@Test
|
||||
void testPlayerDotEquals() {
|
||||
// creating two identical players
|
||||
Player player1 = new Player("0", "player0", Country.IE, LocalDate.now(),
|
||||
new ArrayList<>(){{ add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6))); }}
|
||||
);
|
||||
Player player2 = new Player("0", "player0", Country.IE, LocalDate.now(),
|
||||
new ArrayList<>(){{ add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6))); }}
|
||||
);
|
||||
|
||||
// assertEquals uses the objects equals() method, so it suffices for this test
|
||||
assertEquals(player1, player2);
|
||||
}
|
||||
|
||||
/**
|
||||
* test the equals() method of the Achievement class
|
||||
*/
|
||||
@Test
|
||||
void testAchievementDotEquals() {
|
||||
Achievement achievement1 = new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6));
|
||||
Achievement achievement2 = new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6));
|
||||
|
||||
assertEquals(achievement1, achievement2);
|
||||
}
|
||||
|
||||
/**
|
||||
* test serializing & de-serializing just one player
|
||||
* @throws IOException
|
||||
* @throws ClassNotFoundException
|
||||
*/
|
||||
@Test
|
||||
void testSerializePlayer() throws IOException, ClassNotFoundException {
|
||||
// deliberately not catching potential IOExceptions - we want the tests to fail if these are thrown
|
||||
FileOutputStream players_file = new FileOutputStream("players.ser");
|
||||
ObjectOutputStream players_out = new ObjectOutputStream(players_file);
|
||||
ObjectInputStream players_in = new ObjectInputStream(new FileInputStream("players.ser"));
|
||||
|
||||
Player player = new Player("0", "player0", Country.IE, LocalDate.now(),
|
||||
new ArrayList<>(){{ add(new Achievement("Something Award", "An award for something that was especially something", LocalDate.of(2004, 7, 6))); }}
|
||||
);
|
||||
|
||||
// serializing player object, de-serializing it, and comparing them
|
||||
players_out.writeObject(player);
|
||||
Player dplayer = (Player) players_in.readObject();
|
||||
players_out.close();
|
||||
players_file.close();
|
||||
|
||||
assertEquals(player, dplayer);
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user