I need help finishing this code to calculate GPA, print GPA, and print credits.

X File Edit View Build Project Settings Tools Window Help a66 X ANILHEU +16 Y 1 public class GPACalculator{ 2 3 private double gpatotal; 4 private int numCredits; 5 private double gpaToAdd; 6 private int creditsToAdd; 7 8 8 public GPACalculator() { 9 gpaTotal = 0.0; 10 numCredits = 0; 11 gpaToAdd = 0.0; 12 creditsToAdd = 0; 13 } 14 15 public double addNewGradeToGPA (double gpaToAdd, int creditsToAdd) { 16 return 0.0; //Change this as needed 17 } 18 19 public double getGPA() { 20 return 0.0; //change this as needed 21 } 22 23 public int getCredits() { 24 return 0; //Change this as needed 25 1 26 27 public void reset() { 28 } 29 30 } 4 & 4 444 G Calculator.java SGPACalcMain.java GPACalculator.java * Compile Messages JGRASP Messages Run 1/0 Interactions Stop | ----GRASP: operation complete. Clear ETIE Status: running user program Line:16 Col:42 Code:0 Top:1 OVS BLK