Should I use global variables or pass variables in java?

Question

I am creating a sim game based on the 2nd level. I have a 2d array of gridSquares that many classes and methods access and change. Do I have to pass a gridSquares 2d array every time or make it global? What is the practice?

I thought it would be possible to create a class that simply contains a set of variables that could extend all classes? Is this a good or bad idea / not a good practice?

I'm still pretty new to java, so I'm still learning a lot!

Thanks in advance.

Rel

Answer 1

. Java - - . . 2D-; Board. , 2D-.

, :

public class Board
{
    // This is what you're passing around now; Board hides it.
    // Square is the abstraction of a position on the Board
    private Square[][] grid;

    public Board(int nRows, int nCols)        
    {
       this.grid = new Square[nRows][];
       for (int i = 0; i < this.grid[i].length; ++i)
       {
           this.grid[i] = new Square[nCols];
       }
    }

    // Now add methods for adding Pieces to the Board, rules for moving them, etc.
} 

Answer 2

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Answer 3

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Answer 4

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Answer 5

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