javaArrayList作业1

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package cn.usts.edu.homework;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.TreeSet;

/**
 * @author ：fly
 * @description:
 * @date ：2021/11/3 20:03
 */
public class NewsDemo {
    public static void main(String[] args) {
        ArrayList<News> newsArray = new ArrayList<>();
        newsArray.add(new News("新冠确诊病例超千万，数百万印度教信徒赴恒河“圣浴”引民众担忧"));
        newsArray.add(new News("男子突然想起2个月前钓的鱼还在网兜里，捞起一看赶紧放生"));

        System.out.println("============默认=============");
        System.out.println(newsArray);

        System.out.println("============逆序=============");
        Collections.reverse(newsArray);
        System.out.println(newsArray);

        System.out.println("============裁剪=============");
        for (News one : newsArray) {
            if (one.getTitle().length()>15){
                System.out.println(one.getTitle().substring(0,14)+".....");
            }
        }
    }
}

class News{
    private String title;
    private String content;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }


    public News(String title) {
        this.title = title;
    }

    @Override
    public String toString() {
        return "News{" +
                "title='" + title + '\'' +

                '}';
    }
}

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