java - 我想要一个包含 100 名具有属性的学生的列表。我怎样才能在java中拥有这样一个列表而不使用add.list() 100次？

Question

我尝试了传统的方法来创建列表并使用 Credentials 类添加详细信息

新建.java

import java.util.ArrayList;

import java.util.Iterator;
import java.util.List;

public class New {

    public static void main(String[] args) {
        List<Credentials> stud = new ArrayList<>();

        Credentials c1 = new Credentials("Aditya", 1, 15);
        Credentials c2 = new Credentials("Ramesh", 2, 15);
        Credentials c3 = new Credentials("Suresh", 3, 15);
        Credentials c4 = new Credentials("Mahesh", 4, 15);
        Credentials c5 = new Credentials("Naresh", 5, 15);
        Credentials c6 = new Credentials("Sarvesh", 6, 15);
        Credentials c7 = new Credentials("Jayesh", 7, 15);
        Credentials c8 = new Credentials("Paresh", 8, 15);
        Credentials c9 = new Credentials("Nilesh", 9, 15);
        Credentials c10 = new Credentials("Yogesh", 10, 15);
        Credentials c11 = new Credentials("Mahi", 11, 15);
        Credentials c12 = new Credentials("Lonesh", 12, 15);
        Credentials c13 = new Credentials("Prakash", 13, 15);
        Credentials c14 = new Credentials("Akash", 14, 15);
        Credentials c15 = new Credentials("Surya", 15, 15);
        Credentials c16 = new Credentials("Dinesh", 16, 15);
        Credentials c17 = new Credentials("Saresh", 17, 15);

        stud.add(c1);
        stud.add(c2);
        stud.add(c3);
        stud.add(c4);
        stud.add(c5);
        stud.add(c6);
        stud.add(c7);
        stud.add(c8);
        stud.add(c9);
        stud.add(c10);
        stud.add(c11);
        stud.add(c12);
        stud.add(c13);
        stud.add(c14);
        stud.add(c15);
        stud.add(c16);
        stud.add(c17);

        Iterator<Credentials> iterator = stud.iterator();
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        }
    }
}

Answer 1

你可以使用:

List<Credentials> stud = Arrays.asList(new Credentials("Aditya", 1, 15), 
                                       new Credentials("Ramesh", 2, 15), 
                                       new Credentials("Suresh", 3, 15),
                                       ....);

请注意，列表 螺柱无法在结构上进行修改，即您无法添加或删除其中的任何元素现在就可以了。