How to convert json array of K/V to Java HashMap with Jackson JSON -

i learning first java json parser librairie witch jackson json.

i'm trying convert java object list of id/note hashmap list.

my json input this

var basketlist = [ {     "name": "basket 1",     "productlist": {         //id item incremente ordering         "14":{             // quantity add id             "quantity":6,              "note": "thing"           },         "15":{             "quantity":4,             "note": "another thing"         },      } }, {     "name": "basket 2",     "productlist": {         "14":{             "quantity": 16,              "note": "thing"           },         "15":{             "quantity":2,             "note": "another thing"         },         "17":{             "quantity":7,             "note": "some thing"         }     } } 

]

my product list dynamic , don't want create java object that,

my first idea build new productlist in java , add each quantity right product id.

i can't find example online on how that, i'm trying use objectmapper().readtree() , play jsonnode

i can't make work, appreciated

i have done i'm stuck on how key name of last jsonnode :

string json = myjavaitem.getjson(); jsonnode javaitem = mapper.readtree( json ); list<product> listiwantcreate = buildatestorderlist( javaitem );  public static list<product> buildatestorderlist( jsonnode node ) {     list<product> productlist = new arraylist<product>();     jsonnode cabinetlist = node.path( "cabinet" );     if ( !cabinetlist.ismissingnode() )     {         ( jsonnode cabinet : cabinetlist )         {             jsonnode basketlist= cabinet.path( "basketlist" );             if ( !basketlist.ismissingnode() )             {                 ( jsonnode item : productlist )                 {                    // need populate here                    integer iditem; // how key of current item ?                    integer qtity = item.path( "quantity" ).getintvalue();                    product p = new product();                    p.setiditem( iditem );                    p.setquantity(qtity);                    productlist.add( p );                 }             }         }      }     return productlist ; } 

what looking method fields() of jsonnode:

for (iterator<entry<string, jsonnode>> iterator = basketlist.fields(); iterator.hasnext();) {     entry<string, jsonnode> item = iterator.next();        integer iditem = integer.parseint(item.getkey());     // snip }