public class FirstLevelTitleDB1 {
public static void main(String[] args){
FirstLevelTitle car = new FirstLevelTitle(1 , "汽车" , "管理员" , new Date());
FirstLevelTitle test = new FirstLevelTitle(2 , "高考" , "管理员" , new Date());
List newsTitleList = new ArrayList(); // 多态
newsTitleList.add(car); // ArrayList (add) (方法)
newsTitleList.add(test); // ArrayList (add) (方法)
System.out.println("新闻标题数目" + newsTitleList.size() + "条");
print(newsTitleList);
}
/*
*
* 逐条打印每个新闻标题名称
*/
public static void print(List newsList){
for(int u = 0 ; u < newsList.size() ; u = u + 1){
FirstLevelTitle title = (FirstLevelTitle) newsList.get(u);
System.out.println(u + 1 + "\t" + "\t" + title.getTitleName());
}
}
}
FirstLevelTitle title = (FirstLevelTitle) newsList.get(u); 是什么意思
new Date() 是什么意思我是新手请各位高手帮小弟解答一下谢谢
public static void main(String[] args){
FirstLevelTitle car = new FirstLevelTitle(1 , "汽车" , "管理员" , new Date());
FirstLevelTitle test = new FirstLevelTitle(2 , "高考" , "管理员" , new Date());
List newsTitleList = new ArrayList(); // 多态
newsTitleList.add(car); // ArrayList (add) (方法)
newsTitleList.add(test); // ArrayList (add) (方法)
System.out.println("新闻标题数目" + newsTitleList.size() + "条");
print(newsTitleList);
}
/*
*
* 逐条打印每个新闻标题名称
*/
public static void print(List newsList){
for(int u = 0 ; u < newsList.size() ; u = u + 1){
FirstLevelTitle title = (FirstLevelTitle) newsList.get(u);
System.out.println(u + 1 + "\t" + "\t" + title.getTitleName());
}
}
}
FirstLevelTitle title = (FirstLevelTitle) newsList.get(u); 是什么意思
new Date() 是什么意思我是新手请各位高手帮小弟解答一下谢谢
解决方案 »
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