Accumulate a Hashmap with the same key in a JSONObject

My problem is that I need to create a JSon file looking like this in java :

"filename":"51958785100014_220930140958.zip",
"lotUUID":"51958785100014_220930140958",
"version":"0.1.0",
"lotCreationDate":"2022-09-30T14:21:14",
"zipCreationDate":"2022-09-30T14:21:14",
"contentSize":"3",
"content":
[
    {
        "orderUUID":"51958785100014_220930140958_991234",
        "orderMetadataPath":"./51958785100014_220930140958_991234",
        "orderMetadata":"51958785100014_220930140958_991234_order.json"
    },
    {
        "orderUUID":"51958785100014_220930140958_991235",
        "orderMetadataPath":"./51958785100014_220930140958_991235",
        "orderMetadata":"51958785100014_220930140958_991235_order.json"
    },
    {
        "orderUUID":"51958785100014_220930140958_991236",
        "orderMetadataPath":"./51958785100014_220930140958_991236",
        "orderMetadata":"51958785100014_220930140958_991236_order.json"
    }
]

}

with the number of part in "content" equal to "contentsize".

For the moment, I wrote this :

import org.json.JSONObject;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;

public class jsonLotUUID
{
    public String orderUUID;
    public jsonLotUUID(String fileNameText, String lotUUID, String date, Integer nbOrder)
    {
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("filename", lotUUID+".zip");
        jsonObject.put("lotUUID", lotUUID);
        jsonObject.put("version", "0.1.0");
        jsonObject.put("lotCreationDate", date);
        jsonObject.put("zipCreationDate", date);
        jsonObject.put("contentSize", nbOrder);

        HashMap<String, String> m1 = new HashMap<String, String>();

        for (int count = 1; count <= nbOrder; count++)
        {
            orderUUID = lotUUID+"-"+count;

            m1.put("orderUUID", orderUUID);
            m1.put("orderMetadataPath","./"+orderUUID);
            m1.put("orderMetadata", orderUUID+"_order.json");

            jsonObject.accumulate("content", m1);
        }

        try {
            FileWriter file = new FileWriter("TestFiles/"+fileNameText+"/"+lotUUID+".json");
            file.write(jsonObject.toString());
            file.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

But I don’t get the result I want, I have the right number of iteration in the "content" part, but it’s the same one everytime.

Can someone give me some idea/advice to help ?

>Solution :

You need to put

HashMap<String, String> m1 = new HashMap<String, String>();

inside for loop.