package com.basic.threading;

/**
 *
 * @author rafiul
 ** Generally we have no idea which thread(method) will executed first in 
 *  synchronized way (let no priority setup). Either login method will execute 
 *  first or status method. But want login method will execute first, so whenever 
 *  status method try to execute first it will check whether this account already 
 *  logged in or not, if not-> then this method will wait for authentication.
 *  After logged in - authentication will have been succeed and a notification 
 *  will send to the status method from login method for continue its works
 */
class Facebook{
    private boolean loggedIn;

    public Facebook() {
        loggedIn = false;
    }
    /**
     * For communicate between threads methods should be under synchronization
     */
    public synchronized void login(){
        for(int i=0; i