Description
Description:
The tasks in this workshop is a recap of some concepts from previous workshops and some
new concepts like Comparable Interface and Cloneable Interface.
Task 1:
Define a class named Time for encapsulating a time. The class contains the following:
1. A data field of the long time that stores the elapsed time since midnight, Jan 1, 1970.
2. A no-arg constructor that constructs a Time for the current time.
3. A constructor with the specified hour, minute, and second to create a Time.
4. A constructor with the specified elapsed time since midnight, Jan 1, 1970.
5. The getHour() method that returns the current hour in the range 0-23.
6. The getMinute() method that returns the current minute in the range 0-59.
7. The getSecond() method that returns the current second in the range 0-59.
8. The getSeconds() method that returns the elapsed total seconds.
9. The toString() method that returns a string such as “1 hour 2 minutes 1 second” and “14
hours 21 minutes 1 second”.
10. Implement the Comparable
Write a test program that produces the following sample run:
Sample Run – 1
Enter time1 (hour minute second): 331 34 674
19 hours 45 minutes 14 seconds
Elapsed seconds in time1: 1194314
JAC – 444 Semester —-
Enter time2 (elapsed time in seconds): 93889345
16 hours 22 minutes 25 seconds
Elapsed seconds in time2: 93889345
time1.compareTo(time2)? -92695031
time3 is created as a clone of time1
time1.compareTo(time3)? 0
End Sample Run – 1
Sample Run – 2
Enter time1 (hour minute second): 1 2 3
1 hour 2 minutes 3 seconds
Elapsed seconds in time1: 3723
Enter time2 (elapsed time in seconds): 193032
5 hours 37 minutes 12 seconds
Elapsed seconds in time2: 193032
time1.compareTo(time2)? -189309
time3 is created as a clone of time1
time1.compareTo(time3)? 0
End Sample Run – 2
Task 2:
Write a simulation of Banks. Banks trade to other bank by lending and borrowing the
money to each other. In tough economic times, if a bank goes bankrupt, it may not be
able to pay back the loan.
JAC – 444 Semester —-
A bank’s total assets are its current balance plus its loans to other banks.
• The diagram below shows five different banks (0 to 4).
• The banks’ current balances are 25, 125, 175, 75, and 181 million dollars,
respectively.
• The directed edge from node 1 to node 2 indicates that bank 1 lends 40 million
dollars to bank 2.
Banks lend money to each other
• If a bank’s total assets are under a certain limit, the bank is unsafe.
• The money it borrowed cannot be returned to the lender, and the lender cannot
count the loan in its total assets.
• Consequently, the lender may also be unsafe, if its total assets are under the limit.
Write a program to find all the unsafe banks. Your program reads the input as follows.
1. It first reads two integers n and limit,
a. n indicates the number of banks
b. limit is the minimum total assets for keeping a bank safe from the user.
2. It then reads n lines that describe the information for n banks with IDs from 0 to n-1.
3. The first number in the line is the bank’s balance, the second number indicates the
number of banks that borrowed money from the bank, and the rest are pairs of two
numbers.
4. Each pair describes a borrower. The first number in the pair is the borrower’s ID and the
second is the amount borrowed.
For example, the input for the five banks in above picture is as follows (note that the limit is
201):
Current balance
Bank ID
Lending money
JAC – 444 Semester —-
Number of banks: 5
Minimum asset limit: 201
For Bank # 0
Balance: 25
Number of banks Loaned: 2
Bank ID who gets the loan: 1
Loaned Amount: 100.5
Bank ID who gets the loan: 4
Loaned Amount: 320.5
For Bank # 1
Balance: 125
Number of banks Loaned: 2
Bank ID who gets the loan: 2
Loaned Amount: 40
Bank ID who gets the loan: 3
Loaned Amount: 85
For Bank # 2
Balance: 175
Number of banks Loaned: 2
Bank ID who gets the loan: 0
Loaned Amount: 125
Bank ID who gets the loan: 3
Loaned Amount: 75
For Bank # 3
Balance: 75
Number of banks Loaned: 1
Bank ID who gets the loan: 0
Loaned Amount: 125
For Bank # 4
Balance: 181
Number of banks Loaned: 1
Bank ID who gets the loan: 2
Loaned Amount: 125
The total assets of bank 3 are (75 + 125), which is under 201, so bank 3 is unsafe. After bank
3 becomes unsafe, the total assets of bank 1 fall below (125 + 40). Thus, bank 1 is also
unsafe.
Note: Program should take inputs from the user like Number of banks, Minimum asset
limit and then all other inputs
JAC – 444 Semester —-
The output of the program should be
Unsafe banks are Bank 3 and Bank 1
Bank 3 got bankrupted and it got the loan from Bank 1, because Bank 3 is unsafe due to
under the limit Bank 1 is also unsafe due to lower limit.
Workshop Header
/**********************************************
Workshop #
Course:
Last Name:
First Name:
ID:
Section:
Signature
Date:
**********************************************/
Code Submission Criteria:
Please note that you should have:
• Appropriate indentation.
• Proper file structure
• Follow java naming convention
• Document all the classes properly
• Do Not have any debug/ useless code and/ or files in the assignment
• Do not have everything in the main method.
• Have a separate TestClass with the main method in it.
• Check your inputs if the user is not entering garbage inputs.
• Use exceptional handling or other methods to let the user know if the inputs are
incorrect.
JAC – 444 Semester —-
Deliverables and Important Notes:
All these deliverables are to be uploaded on the blackboard once done.
• You are supposed to create video/ record voice/ detailed document of your running
solution. (20%)
o Screen Video captured file should state your last name and id, like Ali_123456.mp4
(or whatever the extension of the file is) o Record voice clip should also include a
separate word file with the screen shots of your program’s output, state your last
name and id, like Ali_123456.mp3 (or whatever the extension of the file is)
o Detailed document should include screen shots of your output, have your name
and id on the top of the file and save the file with your last name and id, like
li_123456.docx (or whatever the extension of the file is).
• A word/ text file which will reflect on learning of your concepts in this workshop. Also
include the instructions on how to run your code. (30%)
o Should state your Full name and Id on the top of the file and save the file with
your last name and id, like Ali_123456.txt
• Submission of working code. (50%)
o Make sure your follow the “Code Submission Criteria” mentioned above.
o You should zip your whole working project to a file named after your Last Name
followed by the first 3 digits of your student ID. For example, Ali123.zip.
• Your marks will be deducted according to what is missing from the above-mentioned
submission details.
• For Late submissions, please refer to the late policy for the course.
• Remember that you are encouraged to talk to each other, to the instructor, or to
anyone else about any of the assignments, but the final solution may not be copied from
any source.
