public class TwoDimensions {
	
	public static void main(String[] args) {
		
		int a[][]= new int[10][10];
		
		for( int i = 0; i < 10; i++ ) {
			for( int j = 0; j < 10; j++) {
				System.out.print(a[i][j] = j);
			}
		}
		
		//System.out.println(a); 
	}
}
Output as follows
0123456789
0123456789
0123456789