Hi I am new to programming and java.

I don’t know why:

• The checking of the empty string (the displaying of the ‘Error. Please enter a name.’ message) only works when the outer do-while loop is not present, but the checking of the time works.
• I also put the name = “”;
  time = -1.0;
  at the start of the do-while loop again to restart the variables since the input for the name would get skipped over since it has a string already from the first time the code is run, but is there another way to restart the variables properly or to improve my empty string checking so i don’t have to do this roundabout method?

Would appreciate any help.

import java.util.*;

public class programTest
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);

        String name = "";
        double time = -1.0;
        char moreDataChoice = 'a';
        boolean moreData = true;
                

        do
        {
                        name = "";
                time = -1.0;

                System.out.println("Name:");
                while (name.isEmpty() == true)
                {
                        name = sc.next();

                    if (teamName.isEmpty() == false)
                    {
                        break;
                    }
                        else
                    {
                        System.out.println("Error. Please enter a name.");
                        }
                        
                } 

                System.out.println("Time:");
                do
                {
                        time = sc.nextDouble();
                sc.nextLine();

                                if (time >0)
                    {
                        break;
                    }
                    else
                    {
                        System.out.println("Error. Please enter a appropriate time");
                    }
                } while (time <0.0);

                
                        System.out.println("Enter more data? (y/n)");
                        do
                    {
                                moreDataChoice = sc.next().charAt(0);
                        

                if (moreDataChoice == 'y')
                { 
                    moreData = true;
                }
                    else if (moreDataChoice == 'n'
                {
                    moreData = false;
                    break;
                }
                else
                {
                    System.out.println("Error. Please enter y or n.");
                }
                        

                    } while ((moreDataChoice != 'y') && (moreDataChoice != 'n') );
                      
                    
            
             } while (moreData == true);


        sc.close();
    }
}

• The checking of the empty string (the displaying of the ‘Error. Please enter a name.’ message) only works when the outer do-while loop is not present, but the checking of the time works.
• I also put the name = “”;
  time = -1.0;
  at the start of the do-while loop again to restart the variables since the input for the name would get skipped over since it has a string already from the first time the code is run, but is there another way to restart the variables properly or to improve my empty string checking so i don’t have to do this roundabout method?