package w5挑战版; // 老师 public class Teacher extends Person { private String teacherId; // 工号 public Teacher(String name, int age, String teacherId) { super(name, age); this.teacherId = teacherId; } // 重写显示信息 @Override public void showInfo() { System.out.printf("【老师】%s | 年龄:%d | 工号:%s%n", getName(), getAge(), teacherId); } // 🔥 必须加这个getter!否则PersonManager里调用不到 public String getTeacherId() { return teacherId; } }