Add code to insert and changeKey method For the max heap. Write JUnit to test

public class Student implements comparable private String name private double gpa-0 private int units- 0 publie Student (String name) tis. nane name ; public Student (String name, int units, double gpa) this.nane name this.units units; this.gpa -gpa public String getNane() return name public double gpa) return gpai public void setGPA (double newGPA) gpa- nevGPA; publie int units) return unitsi publie void setUnits(int newUnits) units newUnits; public int compareTo(Student other) double difference gpa other-gpa if (difference0) eturn 0 if(difference > 0) return 12; return-14