I have this Json:

```json
{
  "withDrawAccountNumber": "1.10.100.1",
  "Amount": "1000",
  "creditor": {
    "2.20.200.2": "1700",
    "2.20.200.1": "300"
  }
}

```

i want to get the creditor's key value in HashMap, output must be like this:

```
"2.20.200.2": "1700",
"2.20.200.1": "300"

```

i dont have any idea how i must do this.