自定义可变长度二维数组

</pre><pre name="code" class="java"> 体积：300ml 500ml 800ml
 重量： 300g 500g 800g
体积重量 一级分类是确定个数 一级分类的二级分类是可变的 设计一个这种数据模式的二维数组
	 private void initData(){
    	  specificationList=DataView.modelList;  //一级分类的个数
    	  System.out.println("modelList size is: "+DataView.modelList.size());
    	  if(DataView.modelList.size()!=0){
    	 
       	   arrLevel1=new String[specificationList.size()];
       	   arrLevel1Id=new String[specificationList.size()];
       	   
       	   arrLevel2=new String[specificationList.size()][];
       	   arrLevel2Id=new String[specificationList.size()][];
       	
           	 for(int i=0;i<specificationList.size();i++){
                	
               	 Iterator it=specificationList.get(i).keySet().iterator();
//               	 Map modelMap=specificationList.get(i);
                    while(it.hasNext()){
                     String key=(String) it.next(); 
                     System.out.println("key is: "+GoodsUtil.getKey(key));
                     
                     arrLevel1[i]=GoodsUtil.getKey(key);
                     arrLevel1Id[i]=GoodsUtil.getValue(key);
                     
                     ArrayList list=(ArrayList) specificationList.get(i).get(key);   //每个 规格对应的list
//                     System.out.println("list is: "+list.get(i)+"list.size()"+list.size());
                     arrLevel2[i]=new String[list.size()];
                     arrLevel2Id[i]=new String[list.size()];
                    
                   	  for(int j=0;j<list.size();j++){
                   		  


       	                	   arrLevel2[i][j]=GoodsUtil.getKey(list.get(j).toString());
       	                	   arrLevel2Id[i][j]=GoodsUtil.getValue(list.get(j).toString());
       	                	   System.out.println("unitKey" +"i= "+i+" j= "+j+"  "+ arrLevel2[i][j]);
       	                	   System.out.println("unitKey" +"i= "+i+" j= "+j+"  "+ arrLevel2Id[i][j]);
       	                	   
//       	                   }
                   	  }
                    
                    }
                   
                }
    	  }else{
    		  arrLevel1=new String[0];
          	  arrLevel1Id=new String[0];
          	   
          	  arrLevel2=new String[0][0];
          	  arrLevel2Id=new String[0][0];
    	  }
    	  
    }