Temperature scanner using Java. Using condition to determine the different between suitable and bad temperature.

temperature.java

import java.util.Scanner;
import java.lang.String;

public class Covid
{
   public static void main (String[] args) 
   {
	   double temperature = 0.0;
	   String[] name = new String[20];
	   int[]num = new int[20];
	   
	   int nameCount = 0;
	   int numCount = 0;
	   int validCount = 0;
	   int loop = 1;
	   
	   char choice;
	   char detail;
	
	   Scanner scan = new Scanner (System.in);
	   Scanner word = new Scanner (System.in);
	
	do
	{
    	System.out.print("\nPlease enter temperature:");
    	temperature = scan.nextDouble();
    	System.out.println("Your temperature is " + temperature);
    	
    	if((temperature >= 36.0) && (temperature <= 37.5))
    	{
	    		while ((temperature >= 36.0  )&& (temperature <= 37.5))
	   		 {
	        		System.out.println("You may enter the premise. Enjoy the services provided in our premise.");
	        		
	        		System.out.print("\nPlease enter your name : ");
	        		name[nameCount] = word.nextLine();
	        		System.out.print("\n");
	        		
	        		System.out.print("Please enter your phone number : ");
	        		num[numCount] = scan.nextInt();
	        		
	        		System.out.print("\n");
		   			temperature /= 100;
		   			validCount++;
		   			++nameCount;
		   			++numCount;
	   		 }

    		
    	}
    	else if(temperature > 37.5)
    	{
    		System.out.println("You have a fever. You are not allowed to enter the premise.");
    	}
    	else if(temperature < 36.0)
    	{
    		System.out.println("You have entered invalid temperature. Please re-check your temperature");
    	}
    	else 
    	{
    		System.out.println("Error!");
    	}
    	

    	System.out.print("\nReady for next input? (y/Y) : ");
    	choice = scan.next().charAt(0);
    	
	}while((choice == 'y' || choice == 'Y'));
	
    System.out.println("\nThe number of valid visitors to your premise today is : " + validCount);
    
    System.out.print("\nWould you like to see the details of your customer for today? (y/Y) :");
    detail = scan.next().charAt(0);
    
    if((detail == 'y') || (detail =='Y'))
    {
    	System.out.println("\nNo" + "   " + "Name"+ "      " + "Phone Number");
    	for(int i = 0; i < validCount; i++)
    	{
    		System.out.println((loop++) + "    " + name[i]+"       " + num[i]);

    	}
    	System.out.println("\nThank you for using our service. Goodbye!");
    }
    else
    {
    	System.out.println("Thank you for using our service. Goodbye!");
    }
   }
}