CODEWITHSUNDEEP
javaclass
Everyone_Else
Everyone_Else

Reputation: 3264

What are reasons why java could "mix up" different instances of the same class?

I have code that looks like this:

player a=new player(4,10,2,3,"You",'@'); 
player b=new player(4,10,12,3,"Him",'@');   
a.pickUp(new weapon("Lightsaber",true,1,1));
System.out.println(a.getPlayerInventory()[0]); 
System.out.println(b.getPlayerInventory()[0]);

However, at this point, the output of this code tells me that the content's of B's inventory also include a lightsaber. (The same object that player A has.)

What are some possible reasons for this to occur in java? Could it have something to do with whether other methods are static or public/private or not?

I did try googling it, but couldn't find anything (probably because I do not know what this problem is called.)

Thank you for any help you can give me.

Upvotes: 0

Views: 67

Answers (2)

William Brendel
William Brendel

Reputation: 32189

Without seeing the implementation of the player class I can't say for sure, but the most likely explanation is that the array containing the player's inventory is declared as static , which means all instances of the class would share the array.

Upvotes: 1

BlueMoon93
BlueMoon93

Reputation: 2976

If you have a player's inventory as static, then if A gets a lightsaber, every player will have that same lightsaber

Upvotes: 3

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