What do these code fragments print?

a. int n = 1; int m = -1; if (n < -m) { System.out.print(n); } else { System.out.print(m); }

b. int n = 1; int m = -1; if (-n >= m) { System.out.print(n); } else { System.out.print(m); }

c. double x = 0; double y = 1; if (Math.abs(x - y) < 1) { System.out.print(x); } else { System.out.print(y); }

d. double x = Math.sqrt(2); double y = 2; if (x * x == y) { System.out.print(x); } else { System.out.print(y); }