Data class where i need to set values for different fields at different times

Question

I am creating a request for an api using below class-

class ABCDRequest {
 @JsonProperty("name")
 private var name: String? = null
 @JsonProperty("question")
 private var question: String? = null
 @JsonProperty("ans")
 private var ans: String? = null
 fun getName(): String? {
 return name
 }
 fun setName(userName: String?) {
 this.name = userName
 }
 fun getQuestion(): String? {
 return question
 }
 fun setQuestion(ques: String?) {
 this.question = ques
 }
 fun getAns(): String? {
 return ans
 }
 fun setAns(answer: String?) {
 this.ans = answer
 }
}

I need both setter and getter methods and i need to set values for different fields at different times(not at time time of creation of object for this class).

Is the above way idle or is there any 1 or few lines code for this in kotlin?

Answer 1

Use Data Class which automatically generates field accessors, hashCode(), equals(), toString() and other methods. Read this for a quick introduction.

data class ABCDRequest (
 @JsonProperty("name")
 private var name: String? = null,
 @JsonProperty("question")
 private var question: String? = null,
 @JsonProperty("ans")
 private var ans: String? = null
)

For the official documentation on Data Class, head over to this link.

• dfhwze: I'm starting to like Kotlin. C# should steal some features from it ;-)
• Android Developer: As wriiten in my question -i need to set values for different fields at different times(not at time time of creation of object for this class).So if i use this way i need to provide all values while creating object of the class in its constructor
• SaadAAkash: No, you don't need to provide all values at the time of its creation. Use this data class like this: var request: ABCDRequest = ABCDRequest() and when you want to access/set/get the values, request.name = "Android" or request.question?.let { showToast(it.value) }
• SaadAAkash: @AndroidDeveloper, could you please inform me of the error that you're facing with? Yes I use data classes similarly to fetch, store and use data in android