LInkedList特有方法演示

Posted 2020-09-29 君子攸宁

package java_test;

import java.util.LinkedList;

public class LinkedListDemo {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		LinkedList link = new LinkedList();
		link.addFirst("abc1");
		link.addFirst("abc2");
		link.addFirst("abc3");
		
		//演示 XXX first  XXXlast 方法
		//获取,只返回
//		System.out.println(link.getFirst());//abc3
//		System.out.println(link.getFirst());//abc3
		
		//remove方法删除的同时，还会返回删除的元素
//		System.out.println(link.removeFirst());//abc3
//		System.out.println(link.removeFirst());//abc2
		
		//取出元素
		while(!link.isEmpty())
			System.out.println(link.removeLast());
		
	}

}

　运行结果：

abc1

abc2

abc3