Question
You are interested in keeping track of the team members and competition information for your school’s annual entries in computer science programming competitions. Each team consists of exactly four team members. Every year your team competes in two competitions. As an initial start for your database, create a class named Team that has the following instance variables:
// Name for the team
String teamName;
// Names for each team members.
String name1, name2, name3, name4;
// Info on each competition
Competition competition1, competition2;
Note that there is a much better way to represent the team members and competitions using arrays; this is covered in a subsequent chapter. The class should also have a method that outputs all the names of all team members and the competition information to the console.
The
class contains variables to track the following:
String: Name of the competition, Name of the winning team, Name of the runner-up
Integer: Year of the competition
Implement the Team and Competition classes with appropriate constructor, accessor, and mutator methods. In entering data for past competitions, you note that an entry is usually very similar to the previous year’s entry. To help with the data entry, create a deep copy constructor for the Team class. Test your copy constructor by creating a copy of an existing team object, changing the competition information for the copy, and outputting the data for the original and the copy. The original object should be unchanged if your deep copy constructor is working properly.
Answer
Competition Class
public class Competition {
private String competitionName, winningTeam, secondPlace;
public Competition(String competitionName, String winningTeam, String secondPlace, int year) {
this.competitionName = competitionName;
this.winningTeam = winningTeam;
this.secondPlace = secondPlace;
this.year = year;
}
private int year;
public Competition() {
this.competitionName = null;
this.winningTeam = null;
this.secondPlace = null;
this.year = 0000;
}
public Competition(Competition competition){
this.competitionName = competition.getCompetitionName();
this.winningTeam = competition.getWinningTeam();
this.secondPlace = competition.getSecondPlace();
this.year = competition.getYear();
}
public String getCompetitionName() {
return competitionName;
}
public void setCompetitionName(String competitionName) {
this.competitionName = competitionName;
}
public String getWinningTeam() {
return winningTeam;
}
public void setWinningTeam(String winningTeam) {
this.winningTeam = winningTeam;
}
public String getSecondPlace() {
return secondPlace;
}
public void setSecondPlace(String secondPlace) {
this.secondPlace = secondPlace;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public String toString(){
return String.format("%-20s%s%n%-20s%s%n%-20s%s%n%-20s%s%n",
"Competition Name :", getCompetitionName(),
"Year :", getYear(),
"Winning Team ",getWinningTeam(),
"Second Place :", getSecondPlace());
}
}
Team Class
public class Team {
private String teamName;
private Object teamMembers[];
private Object competitions[];
public Team(String teamName, Object[] teamMembers, Object[] competitions) {
this.teamName = teamName;
this.teamMembers = teamMembers;
this.competitions = competitions;
}
public Team() {
this.teamName = null;
this.teamMembers = null;
this.competitions = null;
}
public Team(Team team){
this.teamName = team.getTeamName();
this.teamMembers = new Object[team.teamMembers.length];
System.arraycopy(team.getTeamMembers(), 0, this.teamMembers,
0, team.getTeamMembers().length);
this.competitions = new Object[team.teamMembers.length];
System.arraycopy(team.getCompetitions(), 0, this.competitions,
0, team.getCompetitions().length);
}
public String getTeamName() {
return teamName;
}
public void setTeamName(String teamName) {
this.teamName = teamName;
}
public Object[] getTeamMembers() {
return teamMembers;
}
public void setTeamMembers(Object[] teamMembers) {
this.teamMembers = teamMembers;
}
public Object[] getCompetitions() {
return competitions;
}
public void setCompetitions(Object[] competitions) {
this.competitions = competitions;
}
public String toString(){
int x =0;
String teammembers = "";
for (Object teamMember : teamMembers) {
teammembers += teamMember +" ";
x++;
if (x%2 ==0){
teammembers += "\n";
}
}
String competitiondata = "\n";
competitiondata += competitions[0].toString()+"\n"+competitions[1].toString();
return getTeamName()+"\n"+teammembers +competitiondata;
}
}
Demo
import java.util.Scanner;
public class TeamCompetitionsDemo {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
input.useDelimiter("\n");
//team 1 using default constructor
Team team1 = new Team();
team1.setTeamName("Team 6");
Object[] teammembers = new Object[]{"Micah", "Jose",
"Person3", "Vanessa"};
team1.setTeamMembers(teammembers);
Competition competition1 = new Competition();
competition1.setCompetitionName("Computer Science Competition ");
competition1.setWinningTeam("Team 1");
competition1.setSecondPlace("Team 6");
competition1.setYear(2011);
Competition competition2 = new Competition();
competition2.setCompetitionName("Computer Science Competition 2");
competition2.setWinningTeam("Team 6");
competition2.setSecondPlace("Team 2");
competition2.setYear(2014);
Object[] competitions = new Object[]{competition1, competition2};
team1.setCompetitions(competitions);
System.out.println(team1);
//team 2 using constructor
Object[] team2members = new Object[]{"Aaron", "Jonny",
"Hippie", "Tron"};
Competition team2Competition = new Competition("Ruby Competition ","Team 7","Team 2",1957);
Competition team2Competition2 = new Competition("PHP Competition ","Team 11", "Team 12",1965);
Object[] team2Competitions = new Object[]{team2Competition,
team2Competition2};
Team team2 = new Team("Team Two", team2members, team2Competitions);
System.out.println(team2);
//CopyConstructor used to create similar team object and competition
//Slight Details changed in team 3 do not effect team 1
Team team3 = new Team(team1);
Object[] team3Members = new Object[]{"Micah", "Jose",
"Rafael", "Vanessa"};
team3.setTeamMembers(team3Members);
Competition team3Competition = new Competition(competition1);
team3Competition.setYear(2020);
Competition team3Competition2 = new Competition(competition2);
team3Competition2.setCompetitionName("Data Analysis Competition");
team3Competition2.setYear(2027);
Object[] team3Competitions = new Object[]{team3Competition, team3Competition2};
team3.setCompetitions(team3Competitions);
System.out.println(team3);
}
}
Sample out put
//run:
//Team 6
//Micah Jose
//Person3 Vanessa
//
//Competition Name : Computer Science Competition
//Year : 2011
//Winning Team Team 1
//Second Place : Team 6
//
//Competition Name : Computer Science Competition 2
//Year : 2014
//Winning Team Team 6
//Second Place : Team 2
//
//Team Two
//Aaron Jonny
//Hippie Tron
//
//Competition Name : Ruby Competition
//Year : 1957
//Winning Team Team 1
//Second Place : Team 2
//
//Competition Name : PHP Competition
//Year : 1965
//Winning Team Team 11
//Second Place : Team 12
//
//Team 6
//Micah Jose
//Rafael Vanessa
//
//Competition Name : Computer Science Competition
//Year : 2020
//Winning Team Team 1
//Second Place : Team 6
//
//Competition Name : Data Analysis Competition
//Year : 2027
//Winning Team Team 6
//Second Place : Team 2
//
//BUILD SUCCESSFUL (total time: 0 seconds)---ccsfcs111b