public class Main { public static void main(String[] args) { Student std1 = new Student("Ehsan","Edalat", "9031066"); Student std2 = new Student("Seyed", "Ahmadpanah", "9031806"); Student std3 = new Student("Ahmad", "Asadi", "9031054"); std1.setGrade(15); std2.setGrade(20); std3.setGrade(17); Lab lab1 = new Lab( 20 , "Saturday"); lab1.enrollStudent(std1); lab1.enrollStudent(std2); lab1.enrollStudent(std3); lab1.print(); } }