Split full name into first and sur name and then combine code to use with the program

i'm a first year student and I'm a complete beginner to Java, now i am in trouble with my exercises

Here is part of the CSV file:

<!-- language: lang-none -->
1,Jay Walker,91 Boland Drive,BAGOTVILLE,NSW,2477
2,Mel Lowe,45 Ocean Drive,MILLERS POINT,NSW,2000
3,Hugh Manatee,32 Edgecliff Road,REDFERN,NSW,2016
4,Elizabeth Turner,93 Webb Road,MOUNT HUTTON,NSW,2290

This is my Client class (has constructor):

public class Client {
	private int clientID;
	private String firstName;
	private String surName;
	private String street;
	private String suburb;
	private String state;
	private int postcode;
	
	// constructor
	public Client (int ID, String fName, String sName, String str, String sb, String sta, int pCode) {
		
		clientID = ID;
		firstName = fName;
		surName = sName;
		street = str;
		suburb = sb;
		state = sta;
		postcode = pCode;
	}

and this is my code to create object and read data from csv file:

File inFile = new File("clients.txt");
		Scanner inputFile = new Scanner(inFile);
		String str;
		String[] tokens;
		ArrayList<Client> cList = new ArrayList<> ();   
		while (inputFile.hasNext()) {
			
			str = inputFile.nextLine();          
			tokens = str.split(",");             
			
			int clientID = Integer.parseInt(tokens[0]);
			String firstName = tokens[1];
			String surName = tokens[2];
			String street = tokens[3];
			String suburb = tokens[4];
			String state = tokens[5];
			int postcode = Integer.parseInt(tokens[6]);	
			
			Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);

			cList.add (client);
		    System.out.println(client + "\n");
				
		} // end while

So i want to print out the result with the format clientID, firstName, surName, street, suburb, state, postcode perpestively. However in the txt file there are just full names and i dont know how to split it into first name and sur name.

And i also could not know how to combine the code to split the name into this program to match

As i run the code above (which i did not split the name), it always wrong and has error :"index 6 out of bound for length 6".

As i must display the result with the format because it is a requirement from the teacher and i could not change first name and sur name into Client Name

There are 2 possible solution (as I can see):

1. write the Client in the file with down comma (,) between the first and sur name, like this:

1,Jay,Walker,91 Boland Drive,BAGOTVILLE,NSW,2477
2,Mel,Lowe,45 Ocean Drive,MILLERS POINT,NSW,2000
3,Hugh,Manatee,32 Edgecliff Road,REDFERN,NSW,2016
4,Elizabeth,Turner,93 Webb Road,MOUNT HUTTON,NSW,2290

2. split the String from the array again by space, like this:

File inFile = new File("clients.txt");
        Scanner inputFile = new Scanner(inFile);
        String str;
        String[] tokens;
        ArrayList<Client> cList = new ArrayList<> ();   
        while (inputFile.hasNext()) {
            
            str = inputFile.nextLine();          
            tokens = str.split(",");             
            
            int clientID = Integer.parseInt(tokens[0]);
            String firstName = tokens[1].split(" ")[0];
            String surName = tokens[1].split(" ")[1];
            String street = tokens[2];
            String suburb = tokens[3];
            String state = tokens[4];
            int postcode = Integer.parseInt(tokens[5]); 
            
            Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);

            cList.add (client);
            System.out.println(client + "\n");
                
        } // end while