What format and data structure were used to transfer the task in your last project?.

In my latest Java project, JSON format was used to pass tasks between components. The data structure was an object with keys describing task parameters, for example:

{
  "taskId": "12345",
  "type": "dataProcessing",
  "payload": {
    "inputFile": "data.csv",
    "options": {
      "filter": "active",
      "limit": 1000
    }
  }
}

This format is convenient for serialization and network transmission, and it is easily parsed on the receiver's side using libraries like Jackson or Gson.