List转String

String a= "";
List<Object[]> objectList= vo.getList();
List<String> list1= new ArrayList<>();

if(objectList != null &&objectList.size()>0){

 for (Object[] object :objectList) {

        String jing = object[0]+"";
        String wei = object[1]+"";
        list1.add(jing +","+wei);
 }
a= String.join(";",list1);

//
}