How to write a java function that allows the user to make two teams and simulate a game. The program should employ polymorphism and allow subclasses. As scores against teams should be simulated by randomization- use random method to decide who scores against the other and by how many goals.

this is what i have done so far:


public class Main {

private static void playGame(Team teamA,Team teamB)
{

Random rand = new Random();
for(int i= 0 ;i<= rand.nextInt(9);i++){/*Simulating attempts to score by both sides*/
rand = new Random();
int score = 1+ rand.nextInt(3);//Used to decide who scores and who oncedes
switch(score)
{
case 1:
teamA.setGoalsScored();//Team A scores
teamB.setGoalsConceded();//Team B concedes
break;
case 2:
teamB.setGoalsScored();//Team B scores
teamA.setGoalsConceded();//Team A concedes
break;

}

}
}


/**
* @param args the command line arguments
*/

public static void main(String[] args) {
// main menu
Scanner scan ;
Team teamA = null ;
Team teamB = null;
String TeamName;
char getInput ='Y';
int option;
do
{
System.out.println();
System.out.println(" GAME OF VOLLEYBALL\n");
System.out.println(" ...........MAIN MENU...................... ");
System.out.println("To make a team .................. 1 ");
System.out.println("To view a team A ................ 2 ");
System.out.println("To view a team B ................ 3 ");
System.out.println("To play a game .................. 4 ");
System.out.println("View game results................ 5 ");

scan = new Scanner(System.in);
option = scan.nextInt();
switch(option)
{
case 1:
if((teamA == null)||(teamB == null) )//
{
System.out.println("Enter the name of the team : ") ;
scan = new Scanner(System.in);
TeamName = scan.nextLine();
if(teamA == null){
teamA = new Team(TeamName);//instantiating the team
teamA.setTeamMembers();//Assigning members to a team
}else{
teamB = new Team(TeamName);//instantiating the team
teamB.setTeamMembers();//Assigning members to a team
}
}
else{
System.out.println("You have already created two teams ") ;

}
break;
case 2:
if(teamA != null){

System.out.println(teamA.getTeamName());
teamA.desplayTeamMembers();
}else{
System.out.println("You haven't created the team ") ;
}


break;
case 3:
if(teamB != null){
System.out.println(teamB.getTeamName());
teamB.desplayTeamMembers();
}else{
System.out.println("You haven't created the team ") ;
}
break ;

case 4:
Main.playGame(teamA,teamB);
break ;
case 5:
System.out.println("The following are the results ") ;
System.out.println("Team A scored " + teamA.getGoalsScored()) ;
System.out.println("Team B scored " + teamB.getGoalsScored()) ;

break ;
}
System.out.println();
System.out.println(" ...........MAIN MENU...................... ");
System.out.println("Enter any character to continue or N to exit : ");
scan = new Scanner(System.in);
getInput = scan.next().charAt(0);

}while(getInput !='N');


}
public class Team {

String name;//Name of a team
ArrayList teamMembersList;//A collection is requireed to store teamMember objects
int goalsScored;
int goalsConceded;

//Overloading construnctors
Team()
{

}
Team(String name)
{
this.name = name;
this.teamMembersList = new ArrayList();

}

Team(String name,ArrayList teamMembersList)
{
this.name = name;
this.teamMembersList = teamMembersList;
}

//Getters
public String getTeamName()
{
return this.name;
}
public ArrayList getTeamMembers()
{
return this.teamMembersList;
}
public int getGoalsScored()
{
return this.goalsScored;
}
public int getGoalsConceded()
{
return this.goalsConceded;
}
public void desplayTeamMembers( )
{
TeamMember member;
for(int i =0;i<this.teamMembersList.size();i++)
{
member = (TeamMember)this.teamMembersList.get(i);
System.out.println();
System.out.print((i+1) + " ) ");
member.desplayMember();
System.out.println();
}
}
//Setters
public void setTeamName(String name)
{
this.name = name;
}
public void setTeamMembers( )
{


TeamMember member;
Scanner scan ;
char getInput ='Y';
System.out.println(" ...........Team Members Sub menu...................... ");
do
{
System.out.println("A Team should have upto 5 team members\n\n");
System.out.println("To ceate a player..........................1 : ");
System.out.println("To ceate a non player......................2 : ");

scan = new Scanner(System.in);
if(scan.nextInt() == 1)
{
member = new Player();//Creating player object
member.setTeamMember();
this.teamMembersList.add(member) ;//Adding team members to the collection
}else{
if(scan.nextInt() == 2)
{
member = new NonePlayer();//Creating a non player object
member.setTeamMember();
this.teamMembersList.add(member) ;//Adding team members to the colllection
}
}

System.out.println("Enter any character to continue or N to exit : ");
scan = new Scanner(System.in);
getInput = scan.next().charAt(0);

}while(getInput !='N');




}
public void setGoalsScored( )
{
this.goalsScored++;
}
public void setGoalsConceded()
{
this.goalsConceded++;
}
abstract class TeamMember { //Data members common in all Team members String name; String DOB; String description;

//Overloading construnctors
TeamMember()
{
this.name ="--";
this.DOB ="0/0/0";
this.description = "--";
}
TeamMember(String name)
{
this.name = name;
this.DOB ="0/0/0";
this.description = "--";
}

//Getters
protected String getName()
{
return this.name;
}
protected String getDOB()
{
return this.DOB;
}
protected String getDescription()
{
return this.description;
}
protected void desplayMember()
{
System.out.print(" Name ...... "+ this.name);
System.out.print(", Role...."+ this.description);
System.out.print(", Date of Birth...."+ this.DOB);
}
//Setters
protected void setName(String name)
{
this.name = name;
}
protected void setDOB(String DOB)
{
this.DOB = DOB;
}
protected void setDescription( String description)
{
this.description = description;
}
protected void setTeamMember()
{


Scanner scan ;
System.out.print("Team member's name............................... : ");
scan = new Scanner(System.in);
this.name = scan.nextLine();


System.out.print("Team member's role............................... : ");
scan = new Scanner(System.in);
this.description = scan.nextLine();

System.out.print("Team member's date of birth.............................. : ");
scan = new Scanner(System.in);
this.DOB = scan.nextLine();
}
} class Player extends TeamMember { //These data members can only be found in a player int jersey_number; boolean fit;

//Overloading construnctors
Player()
{
super();
}
Player(String name)
{
super(name);
}
Player(String name,int jersey&#95;number )
{
super(name);
this.jersey&#95;number = jersey&#95;number;
}

//Getters
public int getJersey&#95;number()
{
return this.jersey&#95;number;
}
public boolean getFitness()
{
return this.fit;
}
protected void desplayMember()
{
super.desplayMember();
System.out.print(", Jersry Number ...... "+ this.jersey&#95;number);
System.out.print(", Is fit ? ...... "+ this.fit);

}

//Setters
public void setJersey&#95;number( int jersey&#95;number)
{
this.jersey&#95;number = jersey&#95;number;
}
public void setFitness( boolean fit)
{
this.fit = fit;
}
public void setTeamMember()
{
super.setTeamMember();

Scanner scan ;
System.out.print(" Player's Jersey number................... : ");
scan = new Scanner(System.in);
this.jersey&#95;number = scan.nextInt();
System.out.print(" Is player fit?)(yes or no)................... : ");
scan = new Scanner(System.in);
String isFit = scan.nextLine();

if(isFit.equalsIgnoreCase("yes"))
{
this.fit = true;
}

}
}

class NonePlayer extends TeamMember { //Data Members Specific to NonePlayers String Nationality;

//Overloaded constructors NonePlayer() { super(); } NonePlayer(String Nationality, String name) { super(name); this.Nationality = Nationality ; } //getters public String getNatinality() { return this.Nationality; } protected void desplayMember() { super.desplayMember(); System.out.print(" Nationality ...... "+ this.Nationality);

} //Setters public void setNatinality(String Nationality) { this.Nationality = Nationality; } public void setTeamMember() { super.setTeamMember();

Scanner scan ;
System.out.print(", Nationality................... : ");
scan = new Scanner(System.in);
this.Nationality = scan.nextLine();
}
}

Somebody please help??