How to initialize an array of objects in Java

Question

I want to initialize an array of Player objects for a BlackJack game  I ve read a lot about various ways to initialize primitive objects like an array of ints or an array of strings but I cannot take the concept to what I am trying to do here  see below   I would like to return an array of initialized Player objects  The number of player objects to create is an integer for which I prompt the user  I was thinking the constructor could accept an integer value and name the player accordingly while initializing some member variables of the Player object  I think I am close but still quite confused too   static class Player       private String Name      private int handValue      private boolean BlackJack      private TheCard   Hand       public Player int i                if  i    0                        this Name    Dealer                      else                       this Name    Player     String valueOf i                     this handValue   0          this BlackJack   false          this Hand   new TheCard 2            private static Player   InitializePlayers int PlayerCount      The line below never completes after applying the suggested change     Player PlayerCount  thePlayers      for int i   0  i  lt  PlayerCount   1  i                  thePlayers i    new Player i             return thePlayers      EDIT - UPDATE  Here is what I am getting after changing this as I understood your suggestion   Thread  main   Suspended         ClassNotFoundException Throwable   lt init gt  String  Throwable  line  217        ClassNotFoundException Exception   lt init gt  String  Throwable  line  not available      ClassNotFoundException  lt init gt  String  line  not available        URLClassLoader 1 run   line  not available       AccessController doPrivileged PrivilegedExceptionAction lt T gt   AccessControlContext  line  not available  native method         Launcher ExtClassLoader URLClassLoader  findClass String  line  not available        Launcher ExtClassLoader findClass String  line  not available        Launcher ExtClassLoader ClassLoader  loadClass String  boolean  line  not available      Launcher AppClassLoader ClassLoader  loadClass String  boolean  line  not available      Launcher AppClassLoader loadClass String  boolean  line  not available       Launcher AppClassLoader ClassLoader  loadClass String  line  not available       BlackJackCardGame InitializePlayers int  line  30        BlackJackCardGame main String    line  249

User · Answer

Arrays are not changeable after initialization. You have to give it a value, and that value is what that array length stays. You can create multiple arrays to contain certain parts of player information like their hand and such, and then create an arrayList to sort of shepherd those arrays.

Another point of contention I see, and I may be wrong about this, is the fact that your private Player[] InitializePlayers() is static where the class is now non-static. So:

private Player[] InitializePlayers(int playerCount)
{
 ...
}

My last point would be that you should probably have playerCount declared outside of the method that is going to change it so that the value that is set to it becomes the new value as well and it is not just tossed away at the end of the method's "scope."

Hope this helps

User · Answer

If you can hard-code the number of players  Player   thePlayers         new Player 0       new Player 1       new Player 2       new Player 3

User · Answer

Instead of  Player PlayerCount  thePlayers    you want  Player   thePlayers   new Player PlayerCount     and   for int i   0  i  lt  PlayerCount   i          thePlayers i    new Player i     return thePlayers    should return the array initialized with Player instances   EDIT   Do check out this table on wikipedia on naming conventions for java that is widely used

User · Answer

If you are unsure of the size of the array or if it can change you can do this to have a static array   ArrayList lt Player gt  thePlayersList   new ArrayList lt Player gt       thePlayersList add new Player 1    thePlayersList add new Player 2          Some code here that changes the number of players e g  Players   thePlayers   thePlayersList toArray

User · Answer

thePlayers i    new Player i    I just deleted the i inside Player i   and it worked   so the code line should be   thePlayers i    new Player9

User · Answer

It is almost fine  Just have   Player   thePlayers   new Player playerCount   1     And let the loop be   for int i   0  i  lt  thePlayers length  i      And note that java convention dictates that names of methods and variables should start with lower-case   Update  put your method within the class body

User · Answer

Player   players   Stream iterate 0  x- gt  x 1   limit PlayerCount  map i - gt  new Player i   toArray Player    new

[java] How to initialize an array of objects in Java

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