如何从java中的子数组中的值中提取json数组的子集？

Following is my json :

以下是我的json：

{
    "id": null,
    "extId": "720916740",
    "legacyId": null,
    "customerId": null,
    "accountId": null,
    "clientId": null,
    "publisherId": null,
    "name": "AllColumns1_1482141239819",
    "status": "ACTIVE",
    "operationStatus": null,
    "startDate": "20180101",
    "endDate": null,
    "channel": "SEARCH",
    "lastSyncDate": null,
    "linkStatus": "NOT_LINKED"
  },
  {
    "id": null,
    "extId": "720916743",
    "legacyId": null,
    "customerId": null,
    "accountId": null,
    "clientId": null,
    "publisherId": null,
    "name": "AllColumns2_1482141239819",
    "status": "ACTIVE",
    "operationStatus": null,
    "startDate": "20180101",
    "endDate": null,
    "channel": "SEARCH",
    "lastSyncDate": null,
    "linkStatus": "NOT_LINKED"
  },
  {
    "id": null,
    "extId": "720933833",
    "legacyId": null,
    "customerId": null,
    "accountId": null,
    "clientId": null,
    "publisherId": null,
    "name": "2TestCamp2_1482149078243",
    "status": "ACTIVE",
    "operationStatus": null,
    "startDate": "20180101",
    "endDate": null,
    "channel": "SEARCH",
    "lastSyncDate": null,
    "linkStatus": "NOT_LINKED"
  }
{
    "id