Question

I’m trying to insert a blank space to all the elements of a 2D character array. Does this work?

public class AsciiDisplay {

  private char [][] grid;

  public AsciiDisplay() {
    grid = new char [30][15];
  }

  public void updateGrid() {


  //Here is the code to initialize all the elements on my 2D char array with a blank space.
    for(int i = 0; i < grid.length; i++) {
      for(int j = 0; i <grid[0].length; i++) {
        grid[i][j] = ' ';
      }
    }
  }

}

Answer 1

Just a correction your loop should be like below because inside second loop you need to loop on array which you get in the first loop.

for(int j = 0; j <grid[i].length; j++) {