rajendhirandev

// If we use out / in <out T> / <in T> restricts for getter and setter. Also, variance can be used on Classes and Interfaces.

abstract class Test<T> {
    abstract fun getTest(input: T): T
}

class TestImpAbs : Test<Int>() {
    override fun getTest(input: Int): Int {
        return 0
    }

rajendhirandev

// Code Snippet

// Activity ActionBar with NavController 

lateinit var binding: ActivityHomeBinding
lateinit var navController: NavController
lateinit var appBarConfig: AppBarConfiguration

private fun initialize() {
        setSupportActionBar(binding.toolbar)

rajendhirandev

//Earlier Approach:
// Receiver 
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if(resultCode == Activity.RESULT_OK && requestCode == REQUEST_CODE){
 	val dataStr = data?.getStringExtra("Value") ?:"NO Value"
        println(dataStr)
    }
} 

rajendhirandev

//Stateful Compose
@Composable
fun MyCounterStateful() {
    var vStart by remember { mutableStateOf(5) }
    var vEnd by remember { mutableStateOf(7) }
    var noOfTimes by remember { mutableStateOf(0) }
    ComposePracticesTheme {
        Column(modifier = Modifier.padding(15.dp)) {
            Text(text = "Welcome to the Counter")
            ButtonCounter(noOfTimes) {

rajendhirandev

@Composable
fun MyCounterStateful() {
    var vStart by remember { mutableStateOf(5) }
    var vEnd by remember { mutableStateOf(7) }
    var noOfTimes by remember { mutableStateOf(0) }
    ComposePracticesTheme {
        Column(modifier = Modifier.padding(15.dp)) {
            Text(text = "Welcome to the Counter")
            Button(onClick = {
                noOfTimes++

rajendhirandev

package delegation

fun main() {
    println(PaymentProcess(CashPayment()).processPayment())
    PaymentProcess.isUPIDown = true
    println(PaymentProcess(UPIPayment("Tez")).processPayment())
    PaymentProcess.isUPIDown = false
    println(PaymentProcess(UPIPayment("Paytm")).processPayment())
    PaymentProcess.isCardDown = true
    println(PaymentProcess(CardPayment("HDFC", "CC")).processPayment())

rajendhirandev

package java_comp;

class PaymentProcessDelegation {
    public static void main(String[] args) {
        new PaymentProcess(new CashPayment()).paymentMode();
        System.out.println(new PaymentProcess(new CashPayment()).paymentProcess());
        PaymentProcess.isUPIDown = true;
        System.out.println(new PaymentProcess(new UPIPayment("Tez")).paymentProcess());
        PaymentProcess.isUPIDown = false;
        System.out.println(new PaymentProcess(new UPIPayment("Paytm")).paymentProcess());