For example, here is a program that nests for loops:
public class Main {
public static void main(String args[]) {
for (int i = 0; i < 10; i++) {
for (int j = i; j < 10; j++)
System.out.print(".");
System.out.println();
}
}
}
The output produced by this program is shown here:
..........
.........
........
.......
......
.....
....
...
..
.