java - 如何通过继承来访问string的值？

Question

import java.util.*;

class Pilot
{
   protected String PILOT = "BSIT-1A";
   public static void Subject()
   {
      String[] subs = {"Comprog11","WebDev","Digilog12","ComProg12"};
   }
   public static void Teacher()
   {
     String[] teach = {"Ms.a","Ms.b","Ms.c","Ms.d"};
   }
}
class Pilot1 extends Pilot
{
   protected String PILOT1 = "BSIT-1B";
      public static void main(String[]args)
      { 
         Pilot1 obj = new Pilot1();

        System.out.println(obj.PILOT);
        System.out.println(obj.PILOT1);
        obj.Subject();
        obj.Teacher();
      }

如果我在其中放入一个字符串，如何显示 Subject() 和 Teacher() 的值？它没有任何编译器问题，但当我运行时，它只显示

BSIT-1A

BSIT-1B

我的预期输出是

BSIT-1A
BSIT-1B
Comprog11
Webdev
Digilog12
Comprog12
Ms.a
Ms.b
Ms.c
Ms.d

Answer 1

您可以返回数组

 public String[] subject() {
  return {"Comprog11","WebDev","Digilog12","ComProg12"};
 }

然后删除继承。 main 方法不需要它。将 Pilot 常量公开或将这些字符串传递到类构造函数中，并使用 getter 方法添加私有(private)字段，例如

    Pilot a = new Pilot("BSIT-1A");
    Pilot b = new Pilot("BSIT-1B");
    System.out.println(a.getCode());
    System.out.println(b.getCode());
    Arrays.stream(a.subject()).forEach(System.out::println);