Java Array.asList错误
我已经用asList创建了一个数组列表,但是我得到了很多错误Java Array.asList错误,java,spring-boot,Java,Spring Boot,我已经用asList创建了一个数组列表,但是我得到了很多错误 @Service public class ArticleService { List<Article> articleList = new ArrayList<Article>(Arrays.asList( new Article( id:"1", name: "Article 01", description: "Description 01" ), new Article( id:"2", name:
@Service
public class ArticleService {
List<Article> articleList = new ArrayList<Article>(Arrays.asList(
new Article( id:"1", name: "Article 01", description: "Description 01" ),
new Article( id:"2", name: "Article 02", description: "Description 02" ),
new Article( id:"3", name: "Article 03", description: "Description 03" )
));
public List<Article> getAllArticles(){
return articleList;
}
}
使用Arrays.asList的正确方法:
List<Article> articleList = Arrays.asList(new Article(),new Article(),new Article());
假设你的文章分类如下,如果不是,请做适当的分类
class Article{
String id;
String article;
String description;
Article(String id ,String articleName,String description)
{
this.id=id;
this.articleName = articleName;
this.description = description;
}
........
//your getter/setters are defined here.
}
现在你应该在你的主课堂上使用它们,如下所示
List<Article> articleList = new ArrayList<Article>(Arrays.asList(
new Article( "1","Article 01", "Description 01" ),
new Article( "2","Article 02","Description 02" ),
new Article("3","Article 03","Description 03" )
));
//this is the correct way of using it.
很多错误意味着什么样的错误?请发布任何编译器错误,并写一个最小和完整的例子。是的。。。那不是Java。新物品id:1,名称:物品01,描述:描述01???也许从学习语言的基本语法开始吧。我正试图上传一张图片,但应用程序像预期的那样崩溃了类型的预期Java非法开始
List<Article> articleList = new ArrayList<Article>(Arrays.asList(
new Article( "1","Article 01", "Description 01" ),
new Article( "2","Article 02","Description 02" ),
new Article("3","Article 03","Description 03" )
));
//this is the correct way of using it.
// you can execute your business logic like below code
List<Article> articleList=null;
articleList = (List<Article>) new ArrayList();
Article art = new Article();
art.setId(0);
art.setName("Article 01");
art.setDescription("Description 01");
articleList.add(art);