如何使用字符串创建 JSON 对象

I want to create a JSON Object using String.

Example : JSON {"test1":"value1","test2":{"id":0,"name":"testName"}}

In order to create the above JSON I am using this.

String message;
JSONObject json = new JSONObject();

json.put("test1", "value1");

JSONObject jsonObj = new JSONObject();

jsonObj.put("id", 0);
jsonObj.put("name", "testName");
json.put("test2", jsonObj);

message = json.toString();
System.out.println(message);

我想知道如何创建一个包含JSON Array的JSON.

Below is the sample JSON.

{
  "name": "student",
   "stu": {
    "id": 0,
    "batch": "batch@"
  },
  "course": [
    {
      "information": "test",
      "id": "3",
      "name": "course1"
    }
  ],
  "studentAddress": [
    {
      "additionalinfo": "test info",
      "Address": [
        {
          "H.No": "1243",
          "Name": "Temp Address",
          "locality": "Temp locality",
           "id":33          
        },
        {
           "H.No": "1243",
          "Name": "Temp Address",
          "locality": "Temp locality", 
           "id":33                   
        },        
        {
           "H.No": "1243",
          "Name": "Temp Address",
          "locality": "Temp locality", 
           "id":36                   
        }
      ],
"verified": true,
    }
  ]
}

谢谢