import java.util.*;
import java.lang.*;
 
class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String[][] array = {{"0","0","0"},{"0","0","0"},{"0","0","0"}};
 
		System.out.println("Before: ");
		printArray(array);
 
 
		array[0][0] = "x";
		System.out.println("After: ");
		printArray(array);
 
	}
 
	private static void printArray(String[][] array){
		for(int i=0; i<array.length; i++){
			for(int j=0; j<array[0].length; j++){
				System.out.print(array[i][j]);
			}
			System.out.println("");		
		}
	}
}

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