This code is part of a method typically found in...

This code is part of a method typically found in a game like Tetris. Here's what it does step by step:

1. Method Definition:

   • The method removeLine takes an integer parameter line, representing the index of a specific row (or line) in a 2D array board that needs to be removed.

2. Shifting Rows Down:

   • The for loop iterates from the specified line index (line) downward (from top to bottom), decrementing y in each iteration.
   • Using System.arraycopy, it copies the contents of the row above (board[y - 1]) into the current row (board[y]).
   • This effectively "shifts" all rows above the line one row down, overwriting the current row.

3. Clearing the Top Row:

   • After the rows have been shifted, the top-most row (board[0]) is cleared by setting all its values to 0 in the second for loop.
   • The for loop iterates over the width of the board (BOARD_WIDTH), setting each element in board[0] to 0.

Summary:

The method removes a specified line (line) in the 2D board array by shifting all rows above it one row down and clearing the top row. This is often done in games like Tetris where a line is removed when completely filled, and all rows above are moved down to maintain the structure of the game board.