how to update existing JSON file in java

Question

This is my sample Json

 {
        \"State\": {
            \"version\": \"1\",
            \"SName\": \"Test\",
            \"shippingDetails\": {
                   


        

Answer 1

JSONObject jsonObject = new JSONObject("Your_JSON_String");

JSONObject jsonObjectForState = jsonObject.getJSONObject(“State”);

jsonObjectForState.put("Sname", "New_Value_Here");

put(...) will replace the current value with new value. Similarly, you can update the other values. Once you are done, you can convert it back using:

jsonObject.toString();

And write it back to the file.