L04 - Part 2

Patterns.java 
 public class Patterns {
 public static void main(String[] args) {
 for (int i = 0; i < 7; i++) {
 for (int j = 0; j < 7; j++) {
 if ((i + j) % 2 == 0)
 System.out.print("X");
 else
 System.out.print("_");
 }
 System.out.println(); // this is to move down a line after a row
 }
 }
}