Problem 1 Bank. Manage customers’ bank account using the following operations: Create a new account given a customer’s name and initial account. Deposit.

Problem 1Bank

Manage customers’ bank account using the following operations:

• Create a new account given a customer’s name and initial account.

• Deposit money to a customer’s account.

• Withdraw money from a customer’s account and report whether the transaction is successful or not.

Problem 1 : Bank

Class BankAccountAttributes:

1. private double balance;2. private String name;

Problem 1 : Bank

BankAccount

- balance : double- name : String

Some UML notations…

Problem 1 : Bank

className

- attributeName : Type

- methodName(input) : returnType

Signs

+ : public

- : private

~ : package-level (default)

# : protected

Class BankAccountConstructor

public BankAccount (double balance, String name)

Methods

public void deposit (double amount)

public double withdraw (double amount)

public double getBalance()

Problem 1 : Bank

Deposits <amount> to the corresponding bank account

Withdraws <amount> to the corresponding bank account

Returns the current balance of the corresponding account

BankAccount

- balance : double- name : String

+ depost(double) : void+ withdraw(double) : double+ getBalance() : double

Problem 1 : Bank

Input: Process until “0” is read.

Problem 1 : Bank

while (!operation.equals(“0”)) { //Process the input operation = sc.next();}

//print the final balance of all customers

Problem 2Social Network

Social Network 1

Person name: string ArrayList<Integer> group // the group ids of the

person’s groupsGroup

name: string id: int ArrayList<Person> members

SocialNetwork ArrayList<Person> persons ArrayList<Group> groups. Methods to process queries.

Problem 2 : Social Network

Tasks

For all operations, find the person in the person list. Create a new person object if the person has not been mentioned before.

Createjoin First, check whether the group name already exist. If

not exist, create a new group with the assigned name. Add the person into the group.

Quit Find the person in the member list of the group and

remove it Find the group in the person’s group list, and remove

it.Problem 2 : Social

Network

Tasks

Query 1 Just go through the group list to find the one with

maximum member.size()Query 2

Go through every person x in the person list Counting the number of x’s acquaintances by going

through every person y in the person list Check whether x knows y by going through x’s and y’s

group list. If they are in some same group (if their group lists have some common elements), then they know each other.

Update the person who has the maximum number of acquaintances.

Problem 2 : Social Network

Problem 3Lecturer

Create all the get() and set() methods for the attributes in each class (Lecturer and Office)

Have ArrayList<Office> and ArrayList<Lecturer> in main.

Checklist

Main

Lecturer

Office

Problem 3 : Lecturer

Query 1 : Toggle The Status of a Lecturer

public void toggle() {

}

lecturer.toggle();Main

Lecturer

Problem 3 : Lecturer

this.isActive = !this.isActive;

Query 2 : Allocate an Office to A Lecturer

Mainoffice.addLecturer(lecturer);

public void addLecturer(Lecturer lecturer) {lecturers.add(lecturer);

}

Office

Problem 3 : Lecturer

http://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html

Query 3 : Print the Name of An Office that A Lecturer is Allocated

public Office getOffice() {//method one (lazy):

//method two:

}

Lecturer

Sort and take the first element of the list

Loop through each office in the list, take the smallest lexicographically

Problem 3 : Lecturer

Can I just return String instead of Office?

public String getOfficeName() { //operations here return office.getName();}

CAN

Query 4 : Print the Name of An Office that Has the Most Number of Active

Lecturers

public int countActiveLecturers() {

}

Office

for every lecturer in lecturers :if lecturer is active count++

return count

Main

max = 0For every office in offices :

Get number of active lecturers and compare to max

Problem 3 : Lecturer