public static void main(String[] args) {
int [][] b = {{1,2,3},{1,2,3},{1,2,3}};
for (int i = 0; i < b.length; i++) {
for (int j = 0; j < b.length; j++) {
System.out.print(b[i][j]);
}
System.out.println();
}
int [][] a = new int[3][3];
for (int i = 0; i < a.length; i++) {
for (int j = 0; j < a.length; j++) {
a[i][j] = j;
}
}
for (int i = 0; i < a.length; i++) {
for (int j = 0; j < a.length; j++) {
System.out.print(a[i][j]);
}
System.out.println();
}
}