There is a faulty program/code snippet in the following textbox. fix the faulty code.

public int countPositive (int () ) { //Effects: If x=-null throw NullPointerException else return the number of // // positive elements in x. int count = 0; for (int i=0; i < x.length; i++) { if (x[i] >= 0) { count++; } } } return count; // test: x=[-4, 2, 0, 2] // Expected = 2