How does this While loop exit ? (java) -

i tried figure out how program works, , got stuck @ while loop, don't understand how second loop exit, since v never end equal 0 or negative. since it's conditions exit loop, or missing deeper? code converts integers (>0) binary.

public class binary {  public static void main(string[] args) {       // read in command-line argument     int n = integer.parseint(args[0]);      // set v largest power of 2 <= n     int v = 1;     while (v <= n/2) {         v = v * 2;     }      // check presence of powers of 2 in n, largest smallest     while (v > 0) {          // v not present in n          if (n < v) {             system.out.print(0);         }          // v present in n, remove v n         else {             system.out.print(1);             n = n - v;         }          // next smallest power of 2         v = v / 2;     }      system.out.println();  }  } 

v int, , in java 1/2 int gives 0. loop goes through powers of 2 reach one, , 0.

run in debugger see!