FreeMember.java

public class FreeMember extends Member {
	public int FREE_PRIVATE_REPOS = 3;
	public int numPrivateRepo = 0;

	FreeMember(String email, String password) {
		super(email, password);
	}

	@Override
	public Boolean addRepository(Repository repo) {
		if (repo.isPrivate()) {
			if (this.getNumPrivateRepo() == this.FREE_PRIVATE_REPOS) {
				System.out.println("Name: " + repo.getName()
						+ " (PRIVATE) cannot be added because the number of private repository is reaching the limit");
				return false;
			} else {
				this.repoList.add(repo);
				this.numPrivateRepo++;
				return true;
			}
		} else {
			this.repoList.add(repo);
			return true;
		}

	}

	public int getNumPrivateRepo() {
		return this.numPrivateRepo;
	}

	@Override
	public Boolean removeRepository(Repository repo) {
		for (int i = 0; i < this.repoList.size(); i++) {
			if (this.repoList.get(i).isPrivate() && this.repoList.get(i).isEqual(repo)) {
				this.repoList.remove(i);
				this.numPrivateRepo--;
				return true;
			}
		}
		return false;

	}

	@Override
	public void printMemberInfo() {
		System.out.println("--- FREE MEMBER ---");
		System.out.println("Email" + this.email + "(pwd: " + this.password + ")");
		for (Repository repo : this.repoList) {
			if (repo.isPrivate()) {
				System.out.println("Name: " + repo.getName() + "(Private)");
			} else {
				System.out.println("Name: " + repo.getName() + "(Public)");
			}

		}

	}

}

Member.java

import java.util.ArrayList;

public class Member {
	public String email;
	public String password;
	public ArrayList<Repository> repoList;
	
	Member(String email, String password){
		this.email = email;
		this.password = password;
		this.repoList = new ArrayList<Repository>();
	}
	
	
	public Boolean addRepository(Repository repo){
		if(repo != null) {
			this.repoList.add(repo);
			return true;
		}
		return false;
	}
	
	public Boolean removeRepository(Repository repo) {
		for(int i = 0 ; i < this.repoList.size();i++) {
			if(this.repoList.get(i).isEqual(repo)) {
				this.repoList.remove(i);
				return true;
			}
		}
		return false;
	}
	
	public void printMemberInfo() {
		System.out.println("--- Member ---");
		System.out.println("Email" + this.email + "(pwd: " + this.password + ")" );
		for(Repository repo: this.repoList) {
			if(repo.isPrivate()) {
				System.out.println("Name: " + repo.getName() + "(Private)");
			}else {
				System.out.println("Name: " + repo.getName() + "(Public)");
			}
			
		}
	}
}

ProMember.java

import java.util.ArrayList;

public class ProMember extends Member{
	
	public double fee;
	public double COLLABORATOR_FREE = 80.0;
	public ArrayList<String> collaborators;
	public ProMember(String email, String password, int fee) {
		super(email,password);
		this.fee = fee;
		this.collaborators = new ArrayList<String>();
	}

	public boolean addCollaborator(String username) {
		if(!username.isEmpty()) {
			this.collaborators.add(username);
			return true;
		}
		return false;
	}
	
	public boolean removeCollaborator(String username) {
		for(int i = 0; i < this.collaborators.size();i++) {
			if(this.collaborators.get(i).equals(username)) {
				this.collaborators.remove(i);
				return true;
			}
		}
		return false;
	}
	
	public double getMonthlyBill() {
		double sum = this.fee + (this.COLLABORATOR_FREE* this.collaborators.size());
		return sum;
	}
	public void printMemberInfo() {
		System.out.println("--- PRO MEMBER ---");
		System.out.println("Email" + this.email + "(pwd: " + this.password + ")" );
		for(Repository repo: this.repoList) {
			if(repo.isPrivate()) {
				System.out.println("Name: " + repo.getName() + "(Private)");
			}else {
				System.out.println("Name: " + repo.getName() + "(Public)");
			}
			
		}
		
	}

}