generate json, json like data by Java

gistfile1.java

/*
this code tis purposed to make data for AngularJS from data kind of
province    district
data-A1   data-B1 
data-A1   data-B2
data-A1   data-B3
to
[province: "data-A1", districts: [
  {distict: "data-B1"},
  {distict: "data-B2"},
  {distict: "data-B3"}
]]


*/
while(vRs.next()){
  		// 是否同一組
  		if(!vCurrectCountyID.equals(vRs.getString("province")) 
  			|| vCurrectCountyID.equals("")){
  				vCurrectCountyID = vRs.getString("province");
  				vCurrentCountyName = vRs.getString("city_name");
  				if(countyCounter !=0)
  					vRegionModel += "]},";
  				countyCounter ++;
	  			vRegionModel += "{cName: '" + vCurrentCountyName + "', cID: '" + vCurrectCountyID + "',diss: [{dID:'0', dName:'全區'},";
  		} else 
  			vRegionModel += ",";
		vRegionModel += "{dID: '" + vRs.getString("areacode").trim() + "', dName:'" + vRs.getString("area_name").trim() +"'}";
  	}
  	vRegionModel.substring(0, vRegionModel.length()-2);
  	vRegionModel += "]}];";