Removing a json object from a json file in Java -

i have json file downloaded online:

 { "price": 1, "empty": [   0,   0,   0,   0,   0 ], "lowvalue": 0, "highvalue": 0 }, 

and want delete

"empty": [

to

],

i've spent few hours looking @ regex stuff , can't seem figure out how make want do.

edit: annamalai thangaraj's method works until add more file.

{ "price": 1, "empty": [   0,   0,   0,   0,   0 ], "lowvalue": 0, "highvalue": 0 }, { "price": 500, "empty": [   5,   0,   3,   6,   9 ], "lowvalue": 4, "highvalue": 2 } 

which i'm given error:

exception in thread "main" java.lang.classcastexception: com.google.gson.jsonarray cannot cast com.google.gson.jsonobject

my code exactly:

public static void go() throws ioexception {     jsonobject jsonobject = (jsonobject)jsonparser.parse(new filereader(location));     jsonobject.remove("empty");      jsonarray jsonarray = (jsonarray)jsonparser.parse(new filereader(location));       gson gson = new gsonbuilder().setprettyprinting().create();     jsonparser jp = new jsonparser();     jsonelement je = jp.parse(jsonobject.tostring());     string prettyjsonstring = gson.tojson(je);      filewriter file = new filewriter(system.getproperties().getproperty("user.home")+"\\output.json");     try {         file.write(prettyjsonstring);         system.out.println("successfully wrote json object file.");      } catch (ioexception e) {         e.printstacktrace();      } {         file.flush();         file.close();     } } 

use following code remove element empty json

jsonobject jsonobject = (jsonobject) jsonparser.parse(new filereader("file path")); jsonobject .remove("empty"); 

after removing empty element using jsonobject.tojsonstring() target json, structure of json this

 { "price": 1, "lowvalue": 0, "highvalue": 0 },