I am trying to create a program that will create an mxm grid using a 2D array. I want each of the elements within the array to be a "*". The problem is that I don't want to have to write a line of code to individually change each element within the grid. The m is going to be variable as the user is going to assign a value to it. This is the code I have so far:
import java.util.Arrays;
import java.util.Scanner;
public class trial {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("What size array would you like? ");
int m = sc.nextInt();
String[][] grid = new String[m][m];
for(int i=0; i<grid.length; i ) {
for(int j=0; j<grid[i].length; j ) {
StdOut.print(grid[i][j]);
}
StdOut.println();
}
}
}
If m =3 It would give the output:
nullnullnull
nullnullnull
nullnullnull
However, I want the output to be:
***
***
***
Is there a way to do this in Java?
CodePudding user response:
Of course if you never make an assignment
grid[i][j] = "*";
the values will still be their default, null
.