我有三个不同的班级,一个是针对研究生的,一个是本科生的,然后是一个普通的学生班级,我需要从 main 方法中弄清楚如何将学生添加到数组列表中。我不知道如何添加名字,因为它是私有的,并且需要保持私有。
package enrollmentdatabase;
import java.util.ArrayList;
import java.util.Scanner;
public class EnrollmentDataBase {
public static void main(String[] args) {
Scanner input = new Scanner (System.in);
String option = optionChoise(input);
String option1 = "ADD";//ADD option
String option2 = "REMOVE";//REMOVE OPTION
String option3 = "LIST";//LIST OPTION
String option4 = "SAVE";//SAVE OPTION
String option5 = "SORT";//SORT OPTION
ArrayList studentList = new ArrayList();
}//end of main method
public static String optionChoise(Scanner input){
String opt1 = "ADD";//ADD option
String opt2 = "REMOVE";//REMOVE OPTION
String opt3 = "LIST";//LIST OPTION
String opt4 = "SAVE";//SAVE OPTION
String opt5 = "SORT";//SORT OPTION
System.out.println("Enter what you want to do(ADD, REMOVE, LIST, SAVE, or SORT): ");
String opt = input.nextLine();
if((opt.compareToIgnoreCase(opt1)) !=0 || (opt.compareToIgnoreCase(opt1)) != 0 || (opt.compareToIgnoreCase(opt1)) !=0
|| (opt.compareToIgnoreCase(opt1)) !=0 || (opt.compareToIgnoreCase(opt1)) !=0){//enter this if conditional in order to establish that the input is valid
System.out.println("This is not a valid input, please enter in what you want to do: ");
opt = input.nextLine();
}//end of if conditional
return opt;
}//end of option method
public static ArrayList addList(ArrayList studentList, Scanner input){
System.out.println("Enter the Student's first name: ");
String nameFirst= input.nextLine();
Student student1 = new Student();
student1.firstName = nameFirst;
System.out.println("Enter the Student's last name: ");
System.out.println("Enter the Student's UID: ");
System.out.println("Enter the Student's status: ");
System.out.println("Enter YES for having a thesis option, else NO: ");
System.out.println("Enter Masters for Master Studies of PHD for PHD studies: ");
System.out.println("Enter the name of the major professor: ");
System.out.println("Enter the student class standing: ");
System.out.println("Enter the Student's major: ");
System.out.println("Enter the student's overall GPA: ");
System.out.println("Enter the student's major GPA: ");
}//end of addList method
}//end of class