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(Java) Find and Delete Object from JSON ArrayDemonstrates how to find an delete an object from a JSON array of objects.
import com.chilkatsoft.*; public class ChilkatExample { static { try { System.loadLibrary("chilkat"); } catch (UnsatisfiedLinkError e) { System.err.println("Native code library failed to load.\n" + e); System.exit(1); } } public static void main(String argv[]) { // This example will delete the "Pasta" category object from Menu B. // { // "menus": [ // { // "name": "Menu A", // "categories": [ // { // "name": "Kebabs", // "description": "blah blah blah" // }, // { // "name": "Burgers", // "description": "blah blah blah" // }, // { // "name": "Pasta", // "description": "blah blah blah" // }, // { // "name": "Appetizers", // "description": "blah blah blah" // } // ] // }, // { // "name": "Menu B", // "categories": [ // { // "name": "Kebabs", // "description": "blah blah blah" // }, // { // "name": "Burgers", // "description": "blah blah blah" // }, // { // "name": "Pasta", // "description": "blah blah blah" // }, // { // "name": "Appetizers", // "description": "blah blah blah" // } // ] // } // ] // } CkJsonObject json = new CkJsonObject(); boolean success = json.LoadFile("qa_data/json/menus.json"); if (success == false) { System.out.println(json.lastErrorText()); return; } // Find Menu B. CkJsonObject menu = json.FindRecord("menus","name","Menu B",true); // assume menu is found.. // Get the categories array, and then find the index of the "Pasta" menu category. CkJsonArray catArr = menu.ArrayOf("categories"); // Assume it is found.. // Find the object where the name of the JSON member is "name", and the value is "Pasta" int index = catArr.FindObject("name","Pasta",true); if (index < 0) { System.out.println("Pasta not found."); } else { // Delete the "Pasta" category record from Menu B success = catArr.DeleteAt(index); // Assume OK.. } // Examine the JSON to see if it worked as expected.. json.put_EmitCompact(false); System.out.println(json.emit()); } } |
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