Constructor doesnt set any values

I started a simple project, but I've encountered a problem.
Main class

public static void main(String[] args){
/*
• Ask the user how many new students will be added to the database.
• The user should be prompted to enter a name and year for each student.
• The student should have a unique 5-digit id, with the first being their grade level.
• The student should have several course options to choose from.
• Each course costs $600 to enroll.
• The student should be able to check their balance and pay tuition.
• The status of the student should show their name, id, courses, and balance.
*/
Scanner input = new Scanner(System.in);
Scanner n = new Scanner(System.in);
int numberOfStudents=0,year;
String firstName,lastName;
System.out.println("How many students will attend this School? ");
//input number of students
System.out.print("Input : ");
numberOfStudents = input.nextInt();
//end
//Input name and year for every student
Student  students [] = new Student[numberOfStudents];
Deposit deposit [] = new Deposit[numberOfStudents];
for(int i = 0 ; i < numberOfStudents ;i ++){
students[i]=new Student();
deposit[i]=new Deposit(students[i]);
//It consumes the /n character
input.nextLine();
//
System.out.print("Insert First name : ");
firstName=input.nextLine();
students[i].setFirstName(firstName);
System.out.print("Insert last name : ");
lastName=input.nextLine();
students[i].setLastName(lastName);
System.out.print("Input year :");
year=input.nextInt();
students[i].setYear(year);
//set cash test
students[i].setCash(1000);
//end
}
for(int j = 0 ; j < numberOfStudents ; j++){
System.out.println("Student " + j + " First name " + students[j].getFirstName() + " has " + deposit[j].getBalance());
}
//end
}

Student class

private String firstName,lastName;
private int year,grade,cash;
private int[] studentID = new int[5];
public Student(){
}
public Student(String firstName, String lastName, int year) {
this.firstName = firstName;
this.lastName = lastName;
this.year = year;
}
public Student(String firstName, String lastName, int year, int grade, int cash) {
this.firstName = firstName;
this.lastName = lastName;
this.year = year;
this.grade = grade;
this.cash=cash;
}
private int[] RandomID(){
Random rand = new Random();
this.studentID[0] = this.grade;
for(int i = 1; i <= this.studentID.length-1 ; i ++ ){
int randomNumbers = rand.nextInt(10);
this.studentID[i] = randomNumbers;
}
return this.studentID;
}
public int[] getStudentID() {
return RandomID();
}
public int getCash() {
return cash;
}
public void setCash(int cash) {
this.cash=cash;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public int getGrade() {
return grade;
}
public void setGrade(int grade) {
this.grade = grade;
}

Deposit class:

private Student student;
private int balance;
public Deposit(){
}
public Deposit(Student student){
this.student = student;
this.balance=student.getCash();
}
public void checkBalance(){
System.out.println("You have " + this.student.getCash() + " on this account");
}
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
public int getBalance() {
return this.balance;
}
public void setBalance(int balance) {
this.balance = balance;
}

When I call in Main System.out.println(deposit[j].getBalance());, it says it's 0, but I put it in the constructor in the Deposit class.

Shouldn't this.balance have a value from student.getCash()?
The checkBalance method in deposit gives me the value that I need when I call it in the main class student.getCash().

You're initializing the Deposit with a Student instance before you initialize its cash, so it'll be 0. Move the initialization of the Deposit after you're done initializing the corresponding Student and you should be OK:

for(int i = 0 ; i < numberOfStudents ;i ++){
students[i]=new Student();
//It consumes the /n character
input.nextLine();
//
System.out.print("Insert First name : ");
firstName=input.nextLine();
students[i].setFirstName(firstName);
System.out.print("Insert last name : ");
lastName=input.nextLine();
students[i].setLastName(lastName);
System.out.print("Input year :");
year=input.nextInt();
students[i].setYear(year);
//set cash test
students[i].setCash(1000);
//end
deposit[i]=new Deposit(students[i]);
}

The value is being set at the time you create a Deposit object, which is immediately after you create a new Student object. At that time, the value of cash in the Student instance is zero. You don't set that until later. You could do something like:

public int getBalance() {
return this.student.getCash();
}

Instead of setting a balance member once, this would call the method on the Student instance each time to get the updated value. I'm not saying this is the best design, but it appears to be what you expected to happen.