Question

What I am doing is transposing a c# project to java for practice in writing custom classes.
Unfortunately I cant figure out what the person is doing with “this” keyword inside the constructor.

// C# Code - How is this written in Java?
public Player this[int x, int y] 
{ 
    get { return squares[x, y]; } 
    set { squares[x, y] = value; } 
}

I have transposed a lot of the code and am kind of stuck on this. I cant seem to find any information on this particular instance in Java. does anyone have a good lead for me?

Answer 1

That’s not in the constructor. That’s the declaration of an indexer. The Java equivalent would be something like:

public Player getPlayer(int x, int y)
{
    // Note: Java doesn't have "real" multidimensional arrays,
    // only arrays of arrays.
    return squares[x][y];
}

public Player setPlayer(int x, int y, Player player)
{
    squares[x][y] = player;
}