NitinPraksash9911

class TestViewModel @Inject constructor(private val dataRepo: DataRepository) : ViewModel() {

    private var dataLiveData = MutableLiveData<Int>()


    fun insertUser(user: User) {
        dataRepo.insertUser(user)
    }

    fun deleteUser() {

NitinPraksash9911

class Book {
     val name: String = ""
     val price: Int = 0;
     val author: String = ""

}

NitinPraksash9911

class BookStocks:Book {
    val no_of_books: Int = 0;
  
}

NitinPraksash9911

public interface Car {

    void turnOnEngine();
    void accelerate();
}

public class MotorCar implements Car {

    private Engine engine;

NitinPraksash9911

public class ElectricCar implements Car {

    public void turnOnEngine() {
        throw new AssertionError("I don't have an engine!");
    }

    public void accelerate() {
        //this acceleration is crazy!
    }
}

NitinPraksash9911

public interface Car {

    void accelerate();
}

public interface EngineType {
    void turnOnEngine();
}

/***********************/

NitinPraksash9911

interface Robot {
    fun reset()
    fun fly()
    fun talk()
}

class ButterflyRobot : Robot {
 
    override fun reset() {
        TODO("not implemented")

NitinPraksash9911

interface Robot {
    fun reset()
}

interface Flyable {
    fun fly()
}

interface Talkable {
    fun talk()

NitinPraksash9911

enum OutputDevice {PRINTER, DISK}

public fun copy(OutputDevice dev){
  val c:int
  while((c=readKeyBoard)!=EOF){
    if(dev==PRINTER)
    {
      writePrinter(c)
    }else{
      writeToDisk(c)

NitinPraksash9911

interface Reader {
    fun read():Char
}

interface Writer {
   fun write(ch Char)
}

public fun copy(r Reader, w Writer ){
  var ch Char