如何多次获取用户输入并将其存储在同一个数组列表中？

Question

I am a beginner, trying to make a basic hotel management system.

    Scanner sc = new Scanner(System.in);
System.out.print("Number of guests: ");
int no = sc.nextInt();
String[] arr = new String[no];

while(true)
{
  Scanner input = new Scanner(System.in);
  System.out.println("Welcome, How may I help you");
  String req = input.nextLine();

  if(req.equals("register"))
  {
    System.out.println("Enter name:");

    for(int i=0;i<no;i++)
    {
      arr[i] = input.nextLine();
    }
  }
  else if(req.equals("check"))
  {
    Scanner out = new Scanner(System.in);
    System.out.print("Search name: ");
    String ser = out.nextLine();
    int log=0;

    for(int j=0;j<no;j++)
    {
      if(arr[j].equals(ser))
      {
        System.out.println(ser + " is present");
        log++;
      }
    }
    if(log==0)
    {
      System.out.println(ser + " is absent");
    }
  }
  else if(req.equals("exit"))
  {
    System.out.println("\nBye...\n");
    System.exit(0);
  }
}

} }

I added a while loop so that the program never ends on its own and give user the authority to end the program.

       else if(req.equals("exit"))
  {
    System.out.println("\nBye...\n");
    System.exit(0);
  }

I want this program to take input again after the loop repeats and store the input in the same array with the previously added elements.

Any suggestion will be appreciated

Answer 1

I am a beginner, trying to make a basic hotel management system.

    Scanner sc = new Scanner(System.in);
System.out.print("Number of guests: ");
int no = sc.nextInt();
String[] arr = new String[no];

while(true)
{
  Scanner input = new Scanner(System.in);
  System.out.println("Welcome, How may I help you");
  String req = input.nextLine();

  if(req.equals("register"))
  {
    System.out.println("Enter name:");

    for(int i=0;i<no;i++)
    {
      arr[i] = input.nextLine();
    }
  }
  else if(req.equals("check"))
  {
    Scanner out = new Scanner(System.in);
    System.out.print("Search name: ");
    String ser = out.nextLine();
    int log=0;

    for(int j=0;j<no;j++)
    {
      if(arr[j].equals(ser))
      {
        System.out.println(ser + " is present");
        log++;
      }
    }
    if(log==0)
    {
      System.out.println(ser + " is absent");
    }
  }
  else if(req.equals("exit"))
  {
    System.out.println("\nBye...\n");
    System.exit(0);
  }
}

} }

I added a while loop so that the program never ends on its own and give user the authority to end the program.

       else if(req.equals("exit"))
  {
    System.out.println("\nBye...\n");
    System.exit(0);
  }

I want this program to take input again after the loop repeats and store the input in the same array with the previously added elements.

Any suggestion will be appreciated