LinkedList使用示例

本教程将演示如何在LinkedList上执行各种操作，它们分别如下 –

• 将元素添加到LinedList中。
• 从LinkedList中删除元素。
• 搜索LinkedList中的元素。
• 检查LinkedList的大小。
• 检查LinkedList中是否存在元素。
• 从LinkedList中删除所有元素。

文件：LinkedListExample.java –

package com.yiibai.tutorial;  import java.util.LinkedList; import java.util.List;  public class LinkedListExample {     public static void main(String[] args) {         List<String> list=new LinkedList<>();          /*Adding elements into the linked list*/         list.add("One");         list.add("Two");         list.add("Three");         list.add("Four");         list.add("Five");         System.out.println("Elements in linked list:"+list);          /*Removing an element from the linked list*/         String removedEle=list.remove(0); // Remove the first element         System.out.println("Element revoved:"+removedEle);         System.out.println("Elements in list after removal:"+list);          /*Retrieving an element in the linked list*/         String element=list.get(1);    // Get second element         System.out.println("Element at second position:"+element);          /*Print size of List*/         System.out.println("Number of elements:"+list.size());          /*Check if an element exist in the linked list*/         System.out.println("Element exist:"+list.contains("Five"));          /*Finding the index of an element*/         System.out.println("Index of 'Four' is :"+list.indexOf("Four"));          /*Removing all elements from the linked list*/         list.clear();         System.out.println("Elements in linked list:"+list);     } } 

执行上面示例代码，得到以下结果 –

Elements in list:[One Two Three Four Five] Element revoved:One Elements in list after removal:[Two Three Four Five] Element at second position:Three Number of elements:4 Element exist:true Index of 'Four' is :2 Elements in list:[]