Java list 分页

  List<Integer> list=new ArrayList<Integer>();   
  for(int i=1;i<30;i++)
  {
   list.add(i); 
  }
  int pagesize=2;
  int totalcount=list.size();
  int pagecount=0;
  if(totalcount%pagesize==0) pagecount=totalcount/pagesize;
else pagecount = totalcount/pagesize+1;
  for(int i=1;i<=pagecount;i++){   
            if (pagecount==0){
       List<Integer> subList= list.subList((i-1)*pagesize,pagesize*(i));
       System.out.println(subList); 
            }else{
             if (i==pagecount)
             {
                 List<Integer> subList= list.subList((i-1)*pagesize,totalcount);
                 System.out.println(subList); 
             }else
             {
                 List<Integer> subList= list.subList((i-1)*pagesize,pagesize*(i));
                 System.out.println(subList); 
             }
  
            }
      
  }