问题描述
我有一个项目,项目想要一个学生管理系统。我开始做。每个学生必须有 3 个属性(id、name、surname),我必须在链表中保留一个节点。如何在节点中保留这 3 个属性以及如何建立该连接?
解决方法
阅读 Java 中的继承和泛型。你可以这样做:
import numpy as np
import cv2 as cv
img = cv.imread('Picture1.jpg',0)
cv.startWindowThread()
cv.imshow('image',img)
cv.waitKey(0)
cv.imwrite('Picture1.jpg',img)
cv.destroyAllWindows()
并将它们打印为:
List<Student> students = new LinkedList<>();
students.add(new Student(1,"name1","surname1"));
students.add(new Student(2,"name2","surname2"));
students.add(new Student(3,"name3","surname3"));
和学生类:
for (Student student : students) {
System.out.println(student);
}