Help me to fix plzzz i just start learn

Question

i got the assignment to do but i tried my best but it doesn't work and i have to submit tomorrow morning can someone help me to pass it please .......................................
1.The following method is used to display the contents of an array of instances of the Book class to the Terminal Window. A decision has been made to change the code from using Arrays to using Vectors.
public void displayBooks()
//Local variables
final int NUM_BOOKS = 10;
Book[] books = books[NUM_BOOKS];
SimpleInput in = new SimpleInput();
Book aBook;
//Display heading
System.out.println("All books in library");
System.out.println("********************");
for (int i=0;i<NUM_BOOKSi++)
//Obtain the next instance from the Array
aBook = books;
//Display details of book to Terminal Window
System.out.println("Title: " + aBook.getTitle());
System.out.print("\tAuthor: " + aBook.getAuthor());
System.out.print("\t ISBN Number:" + aBook.getISBN());
System.out.print("\t Reference: " + aBook.getReference());
QUESTION
a.Three of the lines of code need to be changed. Using the line numbers provided, indicate which need to be changed.
i.............................................................
ii............................................................
iii...........................................................
b.Provide the required code for each of the lines indicated above.
i.............................................................
ii............................................................
iii...........................................................
QUESTION 2.Write the values of the variables i, j and k after each line of code has been executed. If the variable does not have a value, indicate this using �unknown�.
Code I      i I      j I     k
int i, j, k=0;               
j = 5;               
k = -j;               
i = j / 2;               
Nv k = j % 2;               
i = 8 % 3 * j / 4;               
j = 4 * 2 + 6 * 3;               
j = 4 * (2 + 6) * 3;               
QUESTION 3.The following table indicates the requirements of a class you are required to develop.
Class I State / Instance I Validation / Functionality
Name I     Variables (Type)     I
Student I     name (String) The Vector, examsStore,
id (String) is to contain objects of
telephone (String) type Exam. We do not
examsStore (Vector) necessarily know ____________________________________at compile time exactly how many laps will becompleted.
�Store an exam (represented by a Exam object) in next availablelocation in examsStore Vector (method name: addExam)
�Provide the average mark for all exams (method name: averageMark)
a.Provide a class diagram for the class Student. Use the standards used in this unit to complete the diagram.
b.Write the method storeExam to store an instance of the Exam class in the next available position in the Vector examsStore.

Answer 1

can someone help me to pass it please Why bother.
if you have no interest (or ability) in completing the assignment, save time,
just fail, enjoy the rest of today and tomorrow at your leisure.
Of course, if you indicate you are interested, by posting your attempt at solving
the problem, constructive help would probably come your way.