新闻类
package com.jihekuangjia; /** * 新闻类 * @author Administrator * */ public class News { private int id; //Id private String title; //标题 private String author; //内容 /** * 构造方法 */ public News() {} public News(int id, String title, String author) { super(); this.id = id; this.title = title; this.author = author; } /** * setter getter */ public int getId() { return id; } public void setId(int id) { this.id = id; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } }
新闻测试类LinkedList
package com.jihekuangjia; import java.util.LinkedList; /** * 新闻测试类 LinkedList * @author Administrator * */ public class NewsTest2 { public static void main(String[] args) { /* * 创建链表新闻集合 */ LinkedList<News> list=new LinkedList<News>(); /* * 创建对象 */ News n1=new News(1,"春天到了","小鱼"); News n2=new News(2,"夏天到了","小鸡"); News n3=new News(3,"秋天到了","小狗"); News n4=new News(4,"冬天到了","小猫"); /* * 添加对象 */ list.add(n1); //对象放入集合 list.add(1,n2); //在指定下标放入集合 list.addFirst(n3); //在首添加对象 list.addLast(n4); //在尾添加对象 list.set(1, n1); //在index索引位置的元素替换对象 /* * 输入新闻集合 */ for(News news:list) { System.out.print(news.getId()+","+news.getTitle()+news.getAuthor()); System.out.println(); } /* * get取出对象 */ System.out.println("指定下标取出对象:"+list.get(1)); System.out.println("取出第一个对象:"+list.getFirst()); System.out.println("取出末尾的对象:"+list.getLast()); /* * remove删除对象 */ System.out.println("删除对象返回boolean:"+list.remove(n1)); System.out.println("删除第一个对象:"+list.removeFirst()); System.out.println("删除最后的对象:"+list.removeLast()); } }
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