What does this print in java?

 

public class Main { private double myGPA; private int myCredits; public void increaseCredits(int amount) myCredits myCredits + amount; } public void setCredits(int credits) { myCredits credits; [P] public int getCredits() { return myCredits; } public static void main(String[] args) { Main S new Main(); s.setCredits (6); s.increaseCredits (12); System.out.println(s.getCredits()); }