集合框架07：LinkedList使用

1.视频链接：13.14 LinkedList使用_哔哩哔哩_bilibilihttps://www.bilibili.com/video/BV1zD4y1Q7Fw?spm_id_from=333.788.videopod.episodes&vd_source=b5775c3a4ea16a5306db9c7c1c1486b5&p=142.LinkedList集合的增删改查操作

package com.yundait.Demo01;import javax.swing.*;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ListIterator;public class LinkedListDemo01 {public static void main(String[] args) {//创建集合LinkedList linkedList = new LinkedList<>();//1.添加元素Student s1 = new Student("刘德华", 30);Student s2 = new Student("张学友", 30);Student s3 = new Student("郭富城", 30);Student s4 = new Student("梁朝伟", 30);linkedList.add(s1);linkedList.add(s2);linkedList.add(s3);linkedList.add(s4);//2.删除元素
//        linkedList.remove(s1);
//        linkedList.remove( new Student("张学友", 30));System.out.println("删除后元素个数" + linkedList.size());System.out.println(linkedList.toString());//3.遍历元素//3.1使用for循环System.out.println("-------使用for循环---------");for (int i = 0; i < linkedList.size(); i++) {System.out.println((Student)linkedList.get(i));}//3.2使用增强for循环System.out.println("-------使用for循环---------");for (Object object : linkedList) {Student s = (Student) object;System.out.println(s.toString());}//3.2使用iterator迭代器System.out.println("-------使用iterator迭代器---------");Iterator iterator = linkedList.iterator();while (iterator.hasNext()){Student s = (Student) iterator.next();System.out.println(s.toString());}//3.2使用listIterator迭代器System.out.println("-------使用iterator迭代器---------");ListIterator listIterator = linkedList.listIterator();while (listIterator.hasPrevious()){Student s = (Student) listIterator.next();System.out.println(s.toString());}//4.判断元素是否在集合中System.out.println(linkedList.contains(s3));System.out.println(linkedList.isEmpty());//5.获取元素在集合中的位置System.out.println(linkedList.indexOf(s4));}
}

代码运行结果：