Consider below given code of TestClass.java file carefully along with comments inside the code. Define the body of getStudentAverageMarks and getBatchAverageMarks methods.

class Student { int id; public double marks[][]; // MUST READ below comments about marks array /* first index of 2D array represent subject. Second index represent marks in a test of that subject. e.g. marks[1][2] would store marks of subject 2 and its test 3 each student may have different number of subjects and different number of tests please do not bother about storing subject names, we don't need them in given case */ public double getStudentAverageMarks(){ // define body of this method here ... not in a separate answer section } }

class Section { String sectionName; public Student[] students; }

class Batch{ String batchName; Section[] sections; }

public class TestClass {

public static double getBatchAverageMarks(Batch batch) { // Define the body of this method here ... not in a separate answer section // Assume the batch object passed in parameter is fully populated } }