Android Jetpack Compose - Close Application By Button

package com.geeksforgeeks.demo

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.*
import androidx.compose.ui.graphics.Color
import com.geeksforgeeks.demo.ui.theme.DemoTheme
import kotlin.system.exitProcess

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            DemoTheme(dynamicColor = false, darkTheme = false) {
                Surface(color = Color.White) {
                    CloseAppWithAButton()
                }
            }
        }
    }
}

@Composable
fun CloseAppWithAButton() {
    Box(
        modifier = Modifier.fillMaxSize(),
        contentAlignment = Alignment.Center
    ) {
        Button(
            onClick = {
                // this closes the main activity
                MainActivity().finish()
                // this closes the application
                exitProcess(0)
            }
        ) {
            Text(text = "Close App")
        }
    }
}