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Create a code in which Marks A social networking website hires you to meet the following requirements: 1
Create a code in which Marks A social networking website hires you to meet the following requirements: 1. User can create their profile 2. User can check for mutual friends 3. User can add new friends 4. User can delete friends 5. Display user's profile Solution Guidelines: Create a class Profile having name, emailId, city , country, friendlist[] ( Keep the fields private) Profile class will contain following methods: o createProfile(String name , String emailId, String city, String country): allow user to set his information o addFriends(Profile profile): sends request, if a person accepts the request add the person object into friendlist[] Note: Achieve Method Overloading keep the parameters as (Profile profile , String Message) giving Access to user to send request with a personalized message. o removeFriend(Profile profile):can remove a friend from the friendlist o showFriends(): display the friendlist o search(Profile profile):searches for profile in the list if it exists returns true else return false o checkMutualFriends(Profile profile): returns an array of the common friends
Expert Solution
Creating a code in which Marks A social networking website hires you to meet the following requirements
Step-by-step explanation
Explanation:
import java.io.*;
public class Profile
{
private String name;
private String emailId;
private String city;
private String country;
private Profile friendlist[];
private Profile pendingRequests[];
private int friendCount;
private int pendingCount;
private static final int MAX = 1000;
public void createProfile(String name, String emailId, String city, String country)
{
this.name = name;
this.emailId = emailId;
this.city = city;
this.country = country;
this.friendlist=new Profile[MAX];
this.pendingRequests = new Profile[MAX];
this.friendCount=0;
this.pendingCount=0;
}
public void addFriends(Profile profile)
{
profile.receiveFriendRequest(this, null);
}
public void addFriends(Profile profile, String message)
{
profile.receiveFriendRequest(this, message);
}
public void receiveFriendRequest(Profile profile, String message)
{
this.pendingRequests[this.pendingCount++] = profile;
}
public Profile[] getPendingRequests()
{
return this.pendingRequests;
}
public void acceptFriendRequest(Profile profile)
{
int index = this.pendingRequests.length;
for(int i=0; i<this.pendingCount; i++)
{
if(profile.equals(this.pendingRequests[i]))
{
index = i;
}
}
profile.addToFriendList(this);
addToFriendList(profile);
for(int i=index; i<this.pendingRequests.length-1; i++) this.pendingRequests[i] = this.pendingRequests[i+1];
this.pendingRequests[this.pendingRequests.length-1]=null;
this.pendingCount--;
}
private void addToFriendList(Profile profile)
{
this.friendlist[this.friendCount++] = profile;
}
public void removeFriend(Profile profile)
{
int index=this.friendlist.length;
for(int i=0; i<this.friendlist.length; i++)
{
if(this.friendlist[i] == null) break;
if(profile.equals(this.friendlist[i]))
{
index = i;
}
}
for(int i=index; i<this.friendlist.length-1; i++) this.friendlist[i] = this.friendlist[i+1];
this.friendlist[this.friendlist.length-1] = null;
this.friendCount--;
profile.removeFriend(this);
}
public void showFriends()
{
for(int i=0; i<this.friendlist.length; i++)
{
if(this.friendlist[i] == null) break;
System.out.println(this.friendlist[i]);
}
}
@Override
public String toString()
{
return "Name: " + this.name + "\nEmail: " + this.emailId + "\nCity: " + this.city + "\nCountry: " + this.country;
}
@Override
public boolean equals(Object obj)
{
if(obj == null) return false;
if(!(obj instanceof Profile)) return false;
Profile profile = (Profile)obj;
if(this == profile) return true;
return(profile.name.equals(this.name) && profile.emailId.equals(this.emailId) && profile.city.equals(this.city) && profile.country.equals(this.country));
}
public boolean search(Profile profile)
{
for(int i=0; i<this.friendlist.length; i++)
{
if(this.friendlist[i] == null) break;
if(profile.equals(this.friendlist[i])) return true;
}
return false;
}
public Profile[] checkMutualFriends(Profile profile)
{
int count = 0;
for(int i=0; i<this.friendlist.length; i++)
{
if(this.friendlist[i] == null) break;
if(profile.search(this.friendlist[i])) count++;
}
Profile mutual[] = new Profile[count];
int k = -1;
for(int i=0; i<this.friendlist.length; i++)
{
if(this.friendlist[i] == null) break;
if(profile.search(this.friendlist[i])) mutual[++k] = this.friendlist[i];
}
return mutual;
}
}
class ProfileTest
{
private static final int MAX = 1000;
public static void main(String args[]) throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
Profile profiles[] = new Profile[MAX];
int counter=0;
while(true)
{
System.out.print("\nMENU\n----\n1. Create new profile\n2. View Profiles\n3. Send friend request\n4. Accept requests\n5. View Friend List\n6. View mutual friends\n7. Exit\n\nEnter choice: ");
int choice = Integer.parseInt(br.readLine());
switch(choice)
{
case 1:
System.out.print("CREATE PROFILE\n-----------------\nName: ");
String name = br.readLine();
System.out.print("Email: ");
String email = br.readLine();
System.out.print("City: ");
String city = br.readLine();
System.out.print("Country: ");
String country = br.readLine();
profiles[counter] = new Profile();
profiles[counter++].createProfile(name, email, city, country);
System.out.println("Profile successfully created!");
break;
case 2:
System.out.println("VIEW PROFILES\n--------------");
for(int i=0; i<counter; i++)
{
System.out.println("ID: " + (i+1));
System.out.println(profiles[i]);
}
break;
case 3:
System.out.println("SEND FRIEND REQUEST\n--------------");
System.out.print("Sender Profile ID: ");
int senderID = Integer.parseInt(br.readLine()) - 1;
System.out.print("Receiver Profile ID: ");
int receiverID = Integer.parseInt(br.readLine()) - 1;
if(senderID < 0 || senderID >= counter || receiverID < 0 || receiverID >= counter)
{
System.out.println("Invalid IDs");
} else {
System.out.print("Enter personalized message: ");
String msg = br.readLine();
profiles[senderID].addFriends(profiles[receiverID], msg);
System.out.println("Friend request sent");
}
break;
case 4:
System.out.print("Enter profile ID: ");
int pid = Integer.parseInt(br.readLine()) - 1;
System.out.println("PENDING REQUESTS\n--------------");
Profile pending[] = profiles[pid].getPendingRequests();
for(int i=0; i<pending.length; i++)
{
if(pending[i]==null) break;
System.out.println(pending[i]);
System.out.print("ACCEPT (Y/N) ? ");
char x = br.readLine().trim().toUpperCase().charAt(0);
if(x=='Y') profiles[pid].acceptFriendRequest(pending[i]);
}
break;
case 5:
System.out.print("Enter profile ID: ");
int pidf = Integer.parseInt(br.readLine()) - 1;
System.out.println("FRIEND LIST\n--------------");
profiles[pidf].showFriends();
break;
case 6:
System.out.print("Enter profile ID 1: ");
int pid1 = Integer.parseInt(br.readLine()) - 1;
System.out.print("Enter profile ID 2: ");
int pid2 = Integer.parseInt(br.readLine()) - 1;
Profile mutual[] = profiles[pid1].checkMutualFriends(profiles[pid2]);
System.out.println("MUTUAL FRIENDS\n--------------");
for(Profile p:mutual) System.out.println(p);
break;
case 7:
return;
default:
System.out.println("Invalid choice");
}
}
}
}
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