public class Student {
 private double myGPA;
 private int myCredits;

 public void increaseCredits(int amount) {
 myCredits = myCredits + amount;
 }
 public void setCredits(int credits) {
 myCredits = credits;
 }
 public int getCredits() {
 return myCredits;
 }
 public static void main(String [] args) {
 Student s = new Student();
 s.setCredits(6);
 s.increaseCredits(12);
 System.out.println(s.getCredits());
 }
}