小编Ign*_*rat的帖子

public Collection<Comment> getCommentCollection() {
   commentCollection = movie.getCommentCollection();       
   return split((List<Comment>) commentCollection, 4);
}

public Collection<Comment> split(List<Comment> list, int size){

     int numBatches = (list.size() / size) + 1;
     Collection[] batches = new Collection[numBatches];
     Collection<Comment> set = commentCollection;

     for(int index = 0; index < numBatches; index++) {
         int count = index + 1;
         int fromIndex = Math.max(((count - 1) * size), 0);
         int toIndex = Math.min((count * size), list.size());
         batches[index] = list.subList(fromIndex, toIndex);
         set = batches[index];
     }

     return set;
 }

嗨,我试图将一个集合划分为更小的集合,这取决于"母亲"集合中的项目数量,并在每次调用get方法时返回其中一个较小的集合(跟踪它是哪一个),有人可以帮我一把吗？
非常感谢你.
伊格纳西奥

private List<Movie> movieItems = null;
public List<Movie> getMovieItems() {
    final int first = 0;
    if (movieItems == null) {
        getPagingInfo();
        movieItems = jpaController.findRange(new int[]{pagingInfo.getFirstItem(), pagingInfo.getFirstItem() + pagingInfo.getBatchSize()});
        Collections.sort(movieItems, new Comparator(){
           public int compare (Object o1, Object o2){
               Date d1 = movieItems.get(((Movie)o1).getMovieId()).getDate();
               Date d2 = movieItems.get(((Movie)o2).getMovieId()).getDate();
               if(d1.before(d2)){
                   movieItems.set(1, (Movie)o1);
                   movieItems.set(2, (Movie)o2);
               }
               return first;
           }
       });
    }
    return movieItems;
}

jpaController带回了4部电影,给我以下内容

在java.util.Arrays中在java.util.Vector.get(Vector.java:694)在entitybeans.jsf.PeliculaController $ 1.compare(PeliculaController.java:260)4:java.lang.ArrayIndexOutOfBoundsException:数组索引超出范围.mergeSort(Arrays.java:1270)在java.util.Arrays.sort(Arrays.java:1210)在java.util.Collections.sort(Collections.java:159)在entitybeans.jsf.PeliculaController.getPeliculaItems(PeliculaController.的java:257)在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)在java.lang中.reflect.Method.invoke(Method.java:597)在javax.el.BeanELResolver.getValue(BeanELResolver.java:302)在javax.el.CompositeELResolver.getValue(CompositeELResolver.java:175)在com.sun.faces. el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)在com.sun.el.parser.AstValue.getValue(AstValue.java:116)在com.sun.el.parser.A stValue.getValue(AstValue.java:163)....

嗨,我想在JavaScript中实现观察者模式:

我的index.js:

$(document).ready(function () {
  var ironMan = new Movie();
  ironMan.setTitle('IronMan');
  ironMan.setRating('R');
  ironMan.setId(1);
  //  ironMan.setCast(['Robert Downey Jr.', 'Jeff Bridges', 'Gwyneth Paltrow']);

  var terminator = new Movie();
  terminator.setTitle('Terminator');
  terminator.setRating('P');
  terminator.setId(2);

  console.log(ironMan.toString());
  console.log(terminator.toString());

  ironMan.play();
  ironMan.stop();
  ironMan.download();
  ironMan.share('V. Rivas');

  console.log(ironMan.getCast()[0]);
});

我的电影:

var title;
var rating;
var id;
var observers;


function Movie() {
  observers = new ObserverList();
}

//function Movie (title, rating, id){
//  this. title = title;
//  this.rating =  rating;
//  this.id =id;
//  observers = new ObserverList();
//} …

使用DefaultHttpClient()就可以了

HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(url_login.toURI());
HttpGet request1 = new HttpGet(url_getList.toURI());
HttpGet request2 = new HttpGet(url.getOtherList.toURI());
HttpResponse response = client.execute(request);
HttpResponse response1 = client.execute(request1);
HttpResponse response2 = client.execute(request2);

并且客户端会保留会话,如何通过改造2来管理以下内容

HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
            interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

            OkHttpClient client = new OkHttpClient.Builder().addInterceptor(new Interceptor() {
                @Override
                public Response intercept(Chain chain) throws IOException {
                    Request original = chain.request();

                    // Customize the request
                    Request request = original.newBuilder()
                            .header("Accept", "application/json")
                            .header("Authorization", "auth-token")
                            .method(original.method(), original.body())
                            .build();

                    Response response = chain.proceed(request);

                    // Customize …

public List<Movie> findRange(int[] range) {
    CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
    cq.select(cq.from(Movie.class));
    Query q = em.createQuery(cq);
    q.setMaxResults(range[1] - range[0]);
    q.setFirstResult(range[0]);
    List<Movie> list1 = q.getResultList();
    Collections.sort(list1, new Comparator(){
           public int compare (Object o1, Object o2){
               Movie p1 = (Movie)o1;
               Movie p2 = (Movie)o2;
               return p2.getDate().compareTo(p1.getDate());
           }
       });
    return list1;
}

因为它现在正在排序工作,但只在批处理中,
(批处理= 4部电影)第一部分=最后输入; 最后一个=输入fisrt.
但只与批次中的那些进行比较而不是根据需要进行全部比较.

非常感谢您提供任何帮助,您可以提供
最好的问候
Ignacio

如果我有:

int a = 123;
int b = 456;

如何得到？:

double c = 123.456;

我已经实现了一个加载新闻的ListView,但是当我滚动列表时,新闻会改变位置.这是清单

public class ListNewsFragment extends SherlockListFragment{

private ListNewsAdapter mAdapter;

@Override
public void onCreate(Bundle savedInstanceState) {
    mAdapter = new ListNewsAdapter(this, app.getAllNews());
    setListAdapter(mAdapter);
    super.onCreate(savedInstanceState);
}
}


public class ListNewsAdapter extends BaseAdapter{
private List<News> news;
private Context mContext;
private LayoutInflater inflater;
private ViewHolder holder;

public ListNewsAdapter(final Fragment c, List<News> news) {
    super();
    this.news = news;
    this.mContext = c.getActivity();
    inflater = LayoutInflater.from(mContext);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    View v = convertView;
    if (v == null) {               
         inflater = …