Implement a Class instant InstantMessageAccount which represents an account in a

Question

Implement a Class instant InstantMessageAccount which represents an account in an instant messaging
server such as AIM or Skype.Besides a username (here called screenName) to be set by the constructor,this class should internally keep track of the number of devices on which a user is logged in at the same (e.g. desktop computer ,tablet and a mobile phone).The constructor should initialise the private field loginCount with 0;a method login()(we dont care about passwords this time) should increment it by 1 and a method logout() should decrement it by 1.From the main method create an account into which you log in and out several times and print the respective login counts

Explanation / Answer

class InstantMessageAccount
{
    private String username;
    private int loginCount;

    InstantMessageAccount()
    {
        loginCount=0;
    }
    public void login()
    {
        loginCount++;
    }
    public void logout()
    {
        loginCount--;
    }
    public int getLoginCount()
    {
        return loginCount;
    }
    public static void main(String args[])
    {
        InstantMessageAccount im=new InstantMessageAccount();
        im.login();
        im.login();
        im.login();
        im.login();
        im.login();
        System.out.println("The login count after 5 logins is: "+im.getLoginCount());
        im.logout();
        im.logout();
        System.out.println("The login count after 2 logouts is: "+im.getLoginCount());
    }
}

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