json question

Try jsoneditoronline.org. This is what your JSON file should look like in order to work:

{
  "com.jorch.pokeMap.Characters.Pregunta": {
    "question1": {
      "question": "what is an class in java?",
      "answer": "is the abstraction of an object in the real world",
      "opciones": [
        "is an instance of a object",
        "i don't know",
        "is the abstraction of an object in te real world"
      ],
      "check": false
    },
    "question2": {
      "question": "what is an class in java?",
      "answer": "is the abstraction of an object in the real world",
      "opciones": [
        "is an instance of a object",
        "i don't know",
        "is the abstraction of an object in te real world"
      ],
      "check": false
    },
    "question3": {
      "question": "what is an class in java?",
      "answer": "is the abstraction of an object in the real world",
      "opciones": [
        "is an instance of a object",
        "i don't know",
        "is the abstraction of an object in te real world"
      ],
      "check": false
    },
    "question4": {
      "question": "what is an class in java?",
      "answer": "is the abstraction of an object in the real world",
      "opciones": [
        "is an instance of a object",
        "i don't know",
        "is the abstraction of an object in te real world"
      ],
      "check": false
    }
  }
}

To make it simple, you can use arrays:

{
  "questions": [
    "what is your birthday",
    "how old are you",
    "what is your name"
  ]
}

But of course you can also use an array of objects which allows to save more information with each question. This is actually what you did in your file.

{
  "question objects": [
    {
      "name": "birthday",
      "text": "what is your birthday"
    },
    {
      "name": "age",
      "text": "how old are you"
    },
    {
      "name": "name",
      "text": "what is your name"
    }
  ]
}