int counter = 10; do counter++; while(false);

while (true) System.out.println("Hello World!");

int x = 13, y = 0; while(x>y) { x--; y++; }

int i = 5; while(i>=0) --i;

for (int j = 5; j > 0; j--) System.out.println("j = " + j);