Nested for Loops in Java

public class MirrorNumberPattern {
    public static void main(String[] args) {
 
        // Upper half including middle
        for (int i = 1; i <= 5; i++) {
            for (int j = i; j <= 5; j++) {
                System.out.print(j);
            }
            System.out.println();
        }
 
        // Lower half
        for (int i = 4; i >= 1; i--) {
            for (int j = i; j <= 5; j++) {
                System.out.print(j);
            }
            System.out.println();
        }
    }
}