what is wrong with the java code?

import java.util.*; CoWN 3 Epublic class student implements Comparable public String givenName, familyName; 5 public int year; public String[] grades; public student (String givenName, String familyName, int year, String U grades this.givenName = givenName; this. familyName familyName; this.year = year; this.grades = grades; ) public String getGiven() return this.givenName; 1 public String get Family return this familyName; 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 public int getYear() return this year: > public string() getGrades () return this.grades: ) public double average () if (grades = null) return -1.0; double total = 0.0; for (int grade:grades total + grade: e return total/grades.length; public int getYear() { return this.year; public String ] getGrades () { return this.grades; } 23 24 25 26 27 e 28 29 30 31 E 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 public double average () { if (grades null) return -1.0; double total = 0.0; for (int grade:grades) total += grade; 1 return total/grades.length; } . H public String toString() String padding = (this year