public static void setTeachers()
	{
		for(int i=0; i<postList.size(); i++)
			for(int j=0; j<teacherList.size(); j++)
				if ( postList.get(i).getUID() == teacherList.get(j).getUID() )
				{
					postList.get(i).setTeacher(teacherList.get(j));
					break;
				}
	}