Print out the data in batches as insertion order

I have this code to printout all the registered passenger's details:

for(int counter = 0; counter < a; counter++) {
	System.out.println("==============================");
	System.out.println("Name: " + PassengerName
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	System.out.println("ID Number: " + PassengerIDNum
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	System.out.println("Mobile Number: " + PassengerMobNum
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	System.out.println("Temperature in °C: " + PassengerTemp
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}

This is the output:

==============================
Name: PassengerA
ID Number: 12345
Mobile Number: 23456
Temperature in °C: 36.5
==============================
Name: PassengerB
ID Number: 34567
Mobile Number: 45678
Temperature in °C: 35.4
==============================
Name: PassengerForTesla
ID Number: 5678
Mobile Number: 6789
Temperature in °C: 35.6
==============================

These inputs are grouped into batches.
PassengerA and PassengerB belong to the first batch of input and PassengerForTesla belongs to the second batch input.

As I use Array I can not print those by batches. What's the way to preserve batch information.

I think it would be best if you create a passenger class like this:

class Passenger {
    private string name;
    private int idNumber;
    private string mobileNumber;
    private int temperature;
    private int inputNumber;
   
    public Passenger(string name, int idNumber, string mobileNumer, int temperature, int inputNumber) {
        this.name = name;
        ....
    }
    public int getInputNumber() { return inputNumber;}

    public void print(){
         System.println(name);
         System.println(idNumber);
         ....
    }
}

This should solve your problems. You can now have a List of Passengers and print out only the ones with a certain inputNumber. Also for convenience sake I'd put a print() method in the passenger class.

So your for() loop would look something like this:

for (Passenger p: myPassengerList) {
     if(p.getInputNumber() == THE_NUMBER_I_WANT_TO_BE_PRINTED) p.print();
}

The reason for using a list and passenger objects instead of multiple arrays is because storing data which belongs together in the same class is a lot easier to work with and in general it's just a better style of programming.

Hope this was helpful

You can construct main method logic accordingly, this could be the basic block

import java.util.ArrayList;
import java.util.List;

public class Main {
  static List<List<Passenger>> allPassengers = new ArrayList<List<Passenger>>();

  public static void main(String[] args) {
    Passenger PassengerA = new Passenger("PassengerA", 12345, "23456", 36.5F);
    Passenger PassengerB = new Passenger("PassengerB", 34567, "45678", 35.4F);
    Passenger PassengerForTesla = new Passenger("PassengerForTesla", 5678, "6789", 35.6F);

    List<Passenger> firstSet = new ArrayList<Passenger>();
    firstSet.add(PassengerA);
    firstSet.add(PassengerB);
    allPassengers.add(firstSet);

    List<Passenger> secondSet = new ArrayList<Passenger>();
    secondSet.add(PassengerForTesla);
    allPassengers.add(secondSet);

    for (int i = 0; i < allPassengers.size(); i++) {
      System.out.println("****print " + (i + 1) + " set passengers****");
      print(allPassengers.get(i));

    }

  }

  private static void print(List<Passenger> passengers) {
    for (Passenger passenger : passengers) {
      System.out.println(passenger + "\n");
    }

  }

}

and the Passenger class is

public class Passenger {
  /*
   * Name: PassengerA ID Number: 12345 Mobile Number: 23456 Temperature in °C: 36.5
   */
  String name;
  int id;
  String mobile;
  float temp;

  public Passenger(String name, int id, String mobile, float temp) {
    super();
    this.name = name;
    this.id = id;
    this.mobile = mobile;
    this.temp = temp;
  }

  @Override
  public String toString() {
    return "==============================" + "\nName: " + name + "\nID Number: " + id
        + "\nMobile Number: " + mobile + "\nTemperature in °C: " + temp;
  }

}

out will be

****print 1 set passengers****
==============================
Name: PassengerA
ID Number: 12345
Mobile Number: 23456
Temperature in °C: 36.5

==============================
Name: PassengerB
ID Number: 34567
Mobile Number: 45678
Temperature in °C: 35.4

****print 2 set passengers****
==============================
Name: PassengerForTesla
ID Number: 5678
Mobile Number: 6789
Temperature in °C: 35.6

I dislike posting 2 answers but I can't comment under @Java Newbie's answer (pls someone just give me an upvote or smth, I can only comment with 50+ reputation) so here you go:

Yes, storing an Array inside an Array is possible. It's called a 2D Array and looks like this: String[][] myArray = new String[someValue][someValue]
Although this is possible, I would very much advise against it. It is a lot better to use Lists. The following code might seem a little complex compared to using a 2D-Array but it is in my opinion the best and only proper way to write this code

List<Ride> rides = new ArrayList<Ride>();

public class Ride {
    private List<Passenger> passengers;
    private VehicleInformation vehicleInformation;
    //You need to add a constructor and getters and setters
}

This way you have a Ride which contains a List of passengers and one car (rule of thumb: if your data structure sounds like a sentence someone would say then it's probably good).

Now if you want to know who rode with vehicle XYZ then you can go through the rides List, select all rides with one vehicle and print the passenger informations. This is something you most likely will want to do in the future and it will be a lot harder to do with arrays.
With lists you can go

List<Passenger> passengersOfCarXYZ = new ArrayList<Passenger>();
for(Ride r: rides){
   if(r.getVehicle().getName().equals("XYZ")) passengersOfCarXYZ.add(r.getPassengers());
}

and have all the passengers of a car. It doesn't get much simpler than this.

Using arrays for this is possible but it's the definition of bad coding haha