publicclassArrayListDemo4{publicstaticvoidmain(String[] args){//1.创建集合对象,用来存储数据ArrayList<Student> list =newArrayList<>();//2.创建学生对象Students1=newStudent("zhangsan",16);Students2=newStudent("lisi",15);Students3=newStudent("wangwu",18);//3.把学生对象添加到集合中list.add(s1)...
Student three=newStudent("Linda", 21, "female"); Student four=newStudent("Miranda", 18, "female"); ArrayList<Student> list =newArrayList<>(10); list.add(one); list.add(two); list.add(three); list.add(four);for(inti=0;i<list.size();i++){ Student stu=list.get(i); System.out...
ArrayList<Student> array = new ArrayList<Student>(); //创建学生对象 Student s1 = new Student("林青霞",30); Student s2 = new Student("张曼玉",35); Student s3 = new Student("王祖贤",33); Student s4 = new Student("柳烟",33); //把学生添加到集合 array.add(s1); array.add(s2); arr...
public static void main(String[] args) { ArrayList<Student> students = new ArrayList<>();students.add(new Student("Alice", 18, "Female", "Freshman"));students.add(new Student("Bob", 19, "Male", "Sophomore"));students.add(new Student("Charlie", 20, "Male", "Junior"))...
2:用Scanner实现键盘录入数据 3:用switch语句完成操作的选择 4:用循环完成再次回到主界面 */ public static void main(String[] args) { //创建集合对象，用于保存学生数据信息 ArrayList<Student> array = new ArrayList<Student>(); //用循环完成再次回到主界面 wc:while (true) { ...
ArrayList<Student> array = new ArrayList<Student>(); //创建学生对象 Student s1 = new Student("张三", 18); Student s2 = new Student("李四", 19); Student s3 = new Student("赵五", 20); array.add(s1); array.add(s2); array.add(s3); ...
package collected1; import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class Management { // // 属性 List <Student> a=new ArrayList<Student>(); 方法 public Management (){ a.add(new Student(201,"liji",98)); a.add(new Student(202,"tomo",94)); a....
ArrayList<Student> students = new ArrayList<>(); students.add(new Student("2020212201","小王",22,"计算机科学与技术1班")); students.add(new Student("2020213201","小刘",20,"软件工程1班")); students.add(new Student("2020212511","小李",21,"土木工程1班")); ...
<body> <%@ page import="java.util.ArrayList" %> <% // 创建一个ArrayList集合 ArrayList<String[]> studentList = new ArrayList<>(); %> </body> 4. 将定义的学生数据添加到ArrayList集合中 将之前定义的学生数据添加到ArrayList集合中: jsp <bod...
泛型通俗的说ArrayList<students> array = new ArrayList<students>()能用的话ArrayList array = new ArrayList()肯定能用，ArrayList<students> array = new ArrayList<students>()只能用友Studentjdk 5.0新特性之一，范型意思是规定了这个arrayList实例里头只能存放Students类型的对象2楼正解泛型学习了泛型...